TY  - JOUR
AU  - Tang, Tian
AU  - Ye, Lyumeng
AU  - Chen, Yanrong
AU  - Xue, Jingyu
AU  - Shen, Xiaoqiang
AU  - Chen, Jinfei
AU  - Quarcoo, Fiona Hammond
AU  - Rac, Vladislav
AU  - Rakić, Vesna
AU  - Li, Xinbao
AU  - Du, Xuesen
PY  - 2024
UR  - https://www.sciencedirect.com/science/article/pii/S0926337323010111
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6464
AB  - The unique interface synergistic catalytic properties for metal oxide-supported catalysts have long been explored in several critical heterogeneous catalytic processes (e.g., CO oxidation reactions). However, interfacial synergistic catalysis is still a hitherto undescribed mechanism due to the lack of direct evidence at the atomic level. Thereinto, the CuOx-supported CeO2 (CuOx/CeO2) catalyst is a typical case. Herein, a combination study including representative theoretical calculations, in situ DRIFTS spectra and tailored molecular probe experiments supports a new carbonate-interface mediated Mars-van Krevelen (M−vK) mechanism for CO oxidation, i.e., CO molecules form carbonate intermediate species directly between spatial proximity (2.99 Å) double lattice oxygen sites with low oxygen vacancies formation energy (EformOv = 0.82 eV/0.83 eV) at the copper−ceria interface. The reaction energy barrier of this process is 0.32 eV, much lower than the 1.23 eV of the conventional M−vK mechanism. Besides, the spatial effect of double oxygen vacancies (Ov) generated by the depletion of intermediate carbonate species promotes the sustained and dynamic activation of O2, hence facilitating the efficient operation of the M−vK mechanism at low temperatures.
T2  - Applied Catalysis B: Environmental
T2  - Applied Catalysis B: EnvironmentalApplied Catalysis B: Environmental
T1  - Diving into the interface-mediated Mars-van Krevelen (M−vK) characteristic of CuOx-supported CeO2 catalysts
SP  - 123368
VL  - 342
DO  - 10.1016/j.apcatb.2023.123368
ER  - 

@article{
author = "Tang, Tian and Ye, Lyumeng and Chen, Yanrong and Xue, Jingyu and Shen, Xiaoqiang and Chen, Jinfei and Quarcoo, Fiona Hammond and Rac, Vladislav and Rakić, Vesna and Li, Xinbao and Du, Xuesen",
year = "2024",
abstract = "The unique interface synergistic catalytic properties for metal oxide-supported catalysts have long been explored in several critical heterogeneous catalytic processes (e.g., CO oxidation reactions). However, interfacial synergistic catalysis is still a hitherto undescribed mechanism due to the lack of direct evidence at the atomic level. Thereinto, the CuOx-supported CeO2 (CuOx/CeO2) catalyst is a typical case. Herein, a combination study including representative theoretical calculations, in situ DRIFTS spectra and tailored molecular probe experiments supports a new carbonate-interface mediated Mars-van Krevelen (M−vK) mechanism for CO oxidation, i.e., CO molecules form carbonate intermediate species directly between spatial proximity (2.99 Å) double lattice oxygen sites with low oxygen vacancies formation energy (EformOv = 0.82 eV/0.83 eV) at the copper−ceria interface. The reaction energy barrier of this process is 0.32 eV, much lower than the 1.23 eV of the conventional M−vK mechanism. Besides, the spatial effect of double oxygen vacancies (Ov) generated by the depletion of intermediate carbonate species promotes the sustained and dynamic activation of O2, hence facilitating the efficient operation of the M−vK mechanism at low temperatures.",
journal = "Applied Catalysis B: Environmental, Applied Catalysis B: EnvironmentalApplied Catalysis B: Environmental",
title = "Diving into the interface-mediated Mars-van Krevelen (M−vK) characteristic of CuOx-supported CeO2 catalysts",
pages = "123368",
volume = "342",
doi = "10.1016/j.apcatb.2023.123368"
}

Tang, T., Ye, L., Chen, Y., Xue, J., Shen, X., Chen, J., Quarcoo, F. H., Rac, V., Rakić, V., Li, X.,& Du, X.. (2024). Diving into the interface-mediated Mars-van Krevelen (M−vK) characteristic of CuOx-supported CeO2 catalysts. in Applied Catalysis B: Environmental, 342, 123368.
https://doi.org/10.1016/j.apcatb.2023.123368

Tang T, Ye L, Chen Y, Xue J, Shen X, Chen J, Quarcoo FH, Rac V, Rakić V, Li X, Du X. Diving into the interface-mediated Mars-van Krevelen (M−vK) characteristic of CuOx-supported CeO2 catalysts. in Applied Catalysis B: Environmental. 2024;342:123368.
doi:10.1016/j.apcatb.2023.123368 .

Tang, Tian, Ye, Lyumeng, Chen, Yanrong, Xue, Jingyu, Shen, Xiaoqiang, Chen, Jinfei, Quarcoo, Fiona Hammond, Rac, Vladislav, Rakić, Vesna, Li, Xinbao, Du, Xuesen, "Diving into the interface-mediated Mars-van Krevelen (M−vK) characteristic of CuOx-supported CeO2 catalysts" in Applied Catalysis B: Environmental, 342 (2024):123368,
https://doi.org/10.1016/j.apcatb.2023.123368 . .

TY  - CONF
AU  - Salević - Jelić, Ana
AU  - Lević, Steva
AU  - Balanč, Bojana
AU  - Mirković, Milica
AU  - Đorđević, Verica
AU  - Knežević-Jugović, Zorica
AU  - Rakić, Vesna
AU  - Nedović, Viktor
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6851
AB  - This research aimed to valorize pumpkin leaves from field crop side streams for the production of a bioactive protein-rich extract and evaluate the potential of its use in the development of the nanocarrier for the nutrient encapsulation employing vitamin E as the model nutrient.
C3  - Abstract Book of 37th EFFoST Internation Conference 2023
T1  - Pumpkin leaves: from field crop side streams to novel nanocarrier structures encapsulating vitamin E
SP  - P.2.2.093
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6851
ER  - 

@conference{
author = "Salević - Jelić, Ana and Lević, Steva and Balanč, Bojana and Mirković, Milica and Đorđević, Verica and Knežević-Jugović, Zorica and Rakić, Vesna and Nedović, Viktor",
year = "2023",
abstract = "This research aimed to valorize pumpkin leaves from field crop side streams for the production of a bioactive protein-rich extract and evaluate the potential of its use in the development of the nanocarrier for the nutrient encapsulation employing vitamin E as the model nutrient.",
journal = "Abstract Book of 37th EFFoST Internation Conference 2023",
title = "Pumpkin leaves: from field crop side streams to novel nanocarrier structures encapsulating vitamin E",
pages = "P.2.2.093",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6851"
}

Salević - Jelić, A., Lević, S., Balanč, B., Mirković, M., Đorđević, V., Knežević-Jugović, Z., Rakić, V.,& Nedović, V.. (2023). Pumpkin leaves: from field crop side streams to novel nanocarrier structures encapsulating vitamin E. in Abstract Book of 37th EFFoST Internation Conference 2023, P.2.2.093.
https://hdl.handle.net/21.15107/rcub_agrospace_6851

Salević - Jelić A, Lević S, Balanč B, Mirković M, Đorđević V, Knežević-Jugović Z, Rakić V, Nedović V. Pumpkin leaves: from field crop side streams to novel nanocarrier structures encapsulating vitamin E. in Abstract Book of 37th EFFoST Internation Conference 2023. 2023;:P.2.2.093.
https://hdl.handle.net/21.15107/rcub_agrospace_6851 .

Salević - Jelić, Ana, Lević, Steva, Balanč, Bojana, Mirković, Milica, Đorđević, Verica, Knežević-Jugović, Zorica, Rakić, Vesna, Nedović, Viktor, "Pumpkin leaves: from field crop side streams to novel nanocarrier structures encapsulating vitamin E" in Abstract Book of 37th EFFoST Internation Conference 2023 (2023):P.2.2.093,
https://hdl.handle.net/21.15107/rcub_agrospace_6851 .

TY  - CONF
AU  - Lević, Steva
AU  - Salević, Ana
AU  - Rac, Vladislav
AU  - Nedović, Viktor
AU  - Antić, Mališa
AU  - Rabrenović, Biljana
AU  - Malićanin, Marko
AU  - Rakić, Vesna
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6861
AB  - In recent decades, wine production has been expanding, with emerging wine regions and new small and medium-sized wineries. Winemaking produces large amounts of grape seeds, often discarded as waste, which are rich in oil, dietary fibers, tocopherols, and polyphenols. If used, the seeds are usually utilized as a source of oil, while the cake remaining after oil extraction is the additional waste with limited usage. Thus, we are working to establish the procedures for the complete utilization of grape seeds with zero byproducts. Pinot Noir variety from a small winery, Zmajevac, Serbia, was used. The main benefit of the oil, obtained by cold pressing, is the high content of unsaturated fatty acids, i.e., linoleic (70%) and oleic acid (19%), with a total oil content of 15 % and an 11 % yield after cold pressing. To facilitate handling, potential addition to food products, and its protection, grape seed oil was encapsulated into calcium alginate-based gel capsules. Encapsulation techniques, electrostatic extrusion, and atomization were used to produce finely powdered encapsulates with encapsulation efficiencies of close to 90 %. The potential use of these capsules is in the substitution of saturated fats in food products where the capsules, apart from protecting oil, could prevent its leakage from food matrices. The results showed that the oil cake could be a promising source of dietary fibers. It contained up to 38 % of insoluble dietary fibers and around 2% of soluble ones (w/w). The high content of insoluble dietary fibers is a basis for further modifications to increase the content of soluble fibers and modulate the nutritional properties of the oil cake. Thus, we tested the enzymatic and hydrothermal processes as modification procedures. The results showed that the enzymatic treatment was more promising regarding the control of soluble/insoluble fibers ratio. Also, the enzymatic process should be more cost- effective regarding capacity and energy consumption.
PB  - European Declaration on Food, Technology and Nutrition Network, Ljubljana
C3  - CEFood Congress Book. 11th Central European Congress on Food and Nutrition “Food, technology and nutrition for healthy people in a healthy environment“
T1  - Towards zero waste food production: utilization of grape seeds
SP  - P-144
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6861
ER  - 

@conference{
author = "Lević, Steva and Salević, Ana and Rac, Vladislav and Nedović, Viktor and Antić, Mališa and Rabrenović, Biljana and Malićanin, Marko and Rakić, Vesna",
year = "2022",
abstract = "In recent decades, wine production has been expanding, with emerging wine regions and new small and medium-sized wineries. Winemaking produces large amounts of grape seeds, often discarded as waste, which are rich in oil, dietary fibers, tocopherols, and polyphenols. If used, the seeds are usually utilized as a source of oil, while the cake remaining after oil extraction is the additional waste with limited usage. Thus, we are working to establish the procedures for the complete utilization of grape seeds with zero byproducts. Pinot Noir variety from a small winery, Zmajevac, Serbia, was used. The main benefit of the oil, obtained by cold pressing, is the high content of unsaturated fatty acids, i.e., linoleic (70%) and oleic acid (19%), with a total oil content of 15 % and an 11 % yield after cold pressing. To facilitate handling, potential addition to food products, and its protection, grape seed oil was encapsulated into calcium alginate-based gel capsules. Encapsulation techniques, electrostatic extrusion, and atomization were used to produce finely powdered encapsulates with encapsulation efficiencies of close to 90 %. The potential use of these capsules is in the substitution of saturated fats in food products where the capsules, apart from protecting oil, could prevent its leakage from food matrices. The results showed that the oil cake could be a promising source of dietary fibers. It contained up to 38 % of insoluble dietary fibers and around 2% of soluble ones (w/w). The high content of insoluble dietary fibers is a basis for further modifications to increase the content of soluble fibers and modulate the nutritional properties of the oil cake. Thus, we tested the enzymatic and hydrothermal processes as modification procedures. The results showed that the enzymatic treatment was more promising regarding the control of soluble/insoluble fibers ratio. Also, the enzymatic process should be more cost- effective regarding capacity and energy consumption.",
publisher = "European Declaration on Food, Technology and Nutrition Network, Ljubljana",
journal = "CEFood Congress Book. 11th Central European Congress on Food and Nutrition “Food, technology and nutrition for healthy people in a healthy environment“",
title = "Towards zero waste food production: utilization of grape seeds",
pages = "P-144",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6861"
}

Lević, S., Salević, A., Rac, V., Nedović, V., Antić, M., Rabrenović, B., Malićanin, M.,& Rakić, V.. (2022). Towards zero waste food production: utilization of grape seeds. in CEFood Congress Book. 11th Central European Congress on Food and Nutrition “Food, technology and nutrition for healthy people in a healthy environment“
European Declaration on Food, Technology and Nutrition Network, Ljubljana., P-144.
https://hdl.handle.net/21.15107/rcub_agrospace_6861

Lević S, Salević A, Rac V, Nedović V, Antić M, Rabrenović B, Malićanin M, Rakić V. Towards zero waste food production: utilization of grape seeds. in CEFood Congress Book. 11th Central European Congress on Food and Nutrition “Food, technology and nutrition for healthy people in a healthy environment“. 2022;:P-144.
https://hdl.handle.net/21.15107/rcub_agrospace_6861 .

Lević, Steva, Salević, Ana, Rac, Vladislav, Nedović, Viktor, Antić, Mališa, Rabrenović, Biljana, Malićanin, Marko, Rakić, Vesna, "Towards zero waste food production: utilization of grape seeds" in CEFood Congress Book. 11th Central European Congress on Food and Nutrition “Food, technology and nutrition for healthy people in a healthy environment“ (2022):P-144,
https://hdl.handle.net/21.15107/rcub_agrospace_6861 .

TY  - JOUR
AU  - Stojanović, S.
AU  - Vranješ, M.
AU  - Šaponjić, Z.
AU  - Rac, V.
AU  - Rakić, V.
AU  - Ignjatović, Lj.
AU  - Damjanović-Vasilić, Lj.
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6120
AB  - Removal of the β-blocker atenolol from an aqueous solution was studied using TiO2/zeolites, prepared by a simple and cost-effective solid-state dispersion method. Synthetic zeolites 13X and ZSM-5 (Si/Al = 40) and natural zeolite clinoptilolite were used as one component of the hybrid materials, whereas TiO2 nanocrystals obtained from TiO2 nanotubes and P25 TiO2 nanoparticles were used as the other. The synthesized materials were characterized by X-ray powder diffraction, transmission electron microscopy, Fourier transformed infrared spectroscopy, ultraviolet–visible diffuse reflectance spectroscopy and scanning electron microscopy with energy-dispersive spectroscopy. The photocatalytic activity for the degradation of atenolol was investigated under simulated solar light. Additionally, the effect of initial pH on atenolol removal and the reusability of prepared catalysts were tested. The best loading of TiO2 was 20 wt% over all investigated zeolites. The degradation of atenolol followed the pseudo-first-order kinetics. The photocatalytic degradation of atenolol after 70 min of irradiation was ~ 50% for TiO2/13X materials, ~ 45% for clinoptilolite combined with P25 TiO2 and ~ 57% for clinoptilolite combined with TiO2 nanocrystals obtained from TiO2 nanotubes. The results showed the highest removal efficiency after 70 min of irradiation for ZSM-5 combined with P25 TiO2 (~ 94%), followed by ZSM-5 combined with TiO2 nanocrystals obtained from TiO2 nanotubes (~ 88%) at near-neutral pH (~ 6.5). The total removal of atenolol from an aqueous solution for TiO2/ZSM-5 materials resulted from two processes: adsorption and photocatalytic degradation. The TiO2/ZSM-5 photocatalysts can be easily recovered and reused as their activity was preserved after four cycles.
T2  - International Journal of Environmental Science and Technology
T2  - International Journal of Environmental Science and TechnologyInt. J. Environ. Sci. Technol.
T1  - Photocatalytic performance of TiO2/zeolites under simulated solar light for removal of atenolol from aqueous solution
DO  - 10.1007/s13762-022-04305-6
ER  - 

@article{
author = "Stojanović, S. and Vranješ, M. and Šaponjić, Z. and Rac, V. and Rakić, V. and Ignjatović, Lj. and Damjanović-Vasilić, Lj.",
year = "2022",
abstract = "Removal of the β-blocker atenolol from an aqueous solution was studied using TiO2/zeolites, prepared by a simple and cost-effective solid-state dispersion method. Synthetic zeolites 13X and ZSM-5 (Si/Al = 40) and natural zeolite clinoptilolite were used as one component of the hybrid materials, whereas TiO2 nanocrystals obtained from TiO2 nanotubes and P25 TiO2 nanoparticles were used as the other. The synthesized materials were characterized by X-ray powder diffraction, transmission electron microscopy, Fourier transformed infrared spectroscopy, ultraviolet–visible diffuse reflectance spectroscopy and scanning electron microscopy with energy-dispersive spectroscopy. The photocatalytic activity for the degradation of atenolol was investigated under simulated solar light. Additionally, the effect of initial pH on atenolol removal and the reusability of prepared catalysts were tested. The best loading of TiO2 was 20 wt% over all investigated zeolites. The degradation of atenolol followed the pseudo-first-order kinetics. The photocatalytic degradation of atenolol after 70 min of irradiation was ~ 50% for TiO2/13X materials, ~ 45% for clinoptilolite combined with P25 TiO2 and ~ 57% for clinoptilolite combined with TiO2 nanocrystals obtained from TiO2 nanotubes. The results showed the highest removal efficiency after 70 min of irradiation for ZSM-5 combined with P25 TiO2 (~ 94%), followed by ZSM-5 combined with TiO2 nanocrystals obtained from TiO2 nanotubes (~ 88%) at near-neutral pH (~ 6.5). The total removal of atenolol from an aqueous solution for TiO2/ZSM-5 materials resulted from two processes: adsorption and photocatalytic degradation. The TiO2/ZSM-5 photocatalysts can be easily recovered and reused as their activity was preserved after four cycles.",
journal = "International Journal of Environmental Science and Technology, International Journal of Environmental Science and TechnologyInt. J. Environ. Sci. Technol.",
title = "Photocatalytic performance of TiO2/zeolites under simulated solar light for removal of atenolol from aqueous solution",
doi = "10.1007/s13762-022-04305-6"
}

Stojanović, S., Vranješ, M., Šaponjić, Z., Rac, V., Rakić, V., Ignjatović, Lj.,& Damjanović-Vasilić, Lj.. (2022). Photocatalytic performance of TiO2/zeolites under simulated solar light for removal of atenolol from aqueous solution. in International Journal of Environmental Science and Technology.
https://doi.org/10.1007/s13762-022-04305-6

Stojanović S, Vranješ M, Šaponjić Z, Rac V, Rakić V, Ignjatović L, Damjanović-Vasilić L. Photocatalytic performance of TiO2/zeolites under simulated solar light for removal of atenolol from aqueous solution. in International Journal of Environmental Science and Technology. 2022;.
doi:10.1007/s13762-022-04305-6 .

Stojanović, S., Vranješ, M., Šaponjić, Z., Rac, V., Rakić, V., Ignjatović, Lj., Damjanović-Vasilić, Lj., "Photocatalytic performance of TiO2/zeolites under simulated solar light for removal of atenolol from aqueous solution" in International Journal of Environmental Science and Technology (2022),
https://doi.org/10.1007/s13762-022-04305-6 . .

TY  - JOUR
AU  - Bosnar, Sanja
AU  - Rac, Vladislav
AU  - Stošić, Dušan
AU  - Travert, Arnaud
AU  - Postole, Georgeta
AU  - Auroux, Aline
AU  - Škapin, Srečo
AU  - Damjanović-Vasilić, Ljiljana
AU  - Bronić, Josip
AU  - Du, Xuesen
AU  - Marković, Smilja
AU  - Pavlović, Vladimir
AU  - Rakić, Vesna
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5961
AB  - Dual templating approach, using hexadecyltrimethylammonium bromide (CTAB), was employed in an attempt to synthesize hierarchical ZSM-5 zeolite. Amount of mesoporogen and the duration of aging of the precursor were varied. Majority of the synthesis routes resulted in phase separation, yielding separate ZSM-5 and amorphous mesoporous material. The relative amounts of the two phases were dependent on the CTAB amount ratio and also significantly on the duration of precursor aging before CTAB addition. One particular combination of the two factors led to the formation of a homogeneous hierarchical form of ZSM-5 with leafy morphology, consisting of intergrown thin crystalline sheets which formed flower-like structures. The hierarchical ZSM-5 possessed significant microporous (≈95 m2/g) and highly developed mesoporous surface (≈470 m2/g), with a relatively broad distribution of mesopore sizes (<20 nm). The acidity of all samples was studied in detail. Isothermal microcalorimetry/volumetry of ammonia adsorption provided quantitative data on the number and distribution of strength of acidic sites. In situ FTIR of pyridine and collidine adsorption was used to quantify Brønsted and Lewis acid sites, and to provide information on their location - in the micropores or mesopores/external surface. The hierarchical ZSM-5 possessed both Lewis and Brønsted acidity, with Brønsted sites located mainly in the micropores. All samples were fully characterized using XRD, low temperature nitrogen adsorption, FESEM and EDS. The synthetic route used for obtaining the ZSM-5 zeolite with flower-like morphology is a simple strategy for preparing hierarchical ZSM-5 forms targeting enhanced diffusivity and accessibility of catalytically active sites.
PB  - Elsevier B.V.
T2  - Microporous and Mesoporous Materials
T1  - Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study
SP  - 111534
VL  - 329
DO  - 10.1016/j.micromeso.2021.111534
ER  - 

@article{
author = "Bosnar, Sanja and Rac, Vladislav and Stošić, Dušan and Travert, Arnaud and Postole, Georgeta and Auroux, Aline and Škapin, Srečo and Damjanović-Vasilić, Ljiljana and Bronić, Josip and Du, Xuesen and Marković, Smilja and Pavlović, Vladimir and Rakić, Vesna",
year = "2021",
abstract = "Dual templating approach, using hexadecyltrimethylammonium bromide (CTAB), was employed in an attempt to synthesize hierarchical ZSM-5 zeolite. Amount of mesoporogen and the duration of aging of the precursor were varied. Majority of the synthesis routes resulted in phase separation, yielding separate ZSM-5 and amorphous mesoporous material. The relative amounts of the two phases were dependent on the CTAB amount ratio and also significantly on the duration of precursor aging before CTAB addition. One particular combination of the two factors led to the formation of a homogeneous hierarchical form of ZSM-5 with leafy morphology, consisting of intergrown thin crystalline sheets which formed flower-like structures. The hierarchical ZSM-5 possessed significant microporous (≈95 m2/g) and highly developed mesoporous surface (≈470 m2/g), with a relatively broad distribution of mesopore sizes (<20 nm). The acidity of all samples was studied in detail. Isothermal microcalorimetry/volumetry of ammonia adsorption provided quantitative data on the number and distribution of strength of acidic sites. In situ FTIR of pyridine and collidine adsorption was used to quantify Brønsted and Lewis acid sites, and to provide information on their location - in the micropores or mesopores/external surface. The hierarchical ZSM-5 possessed both Lewis and Brønsted acidity, with Brønsted sites located mainly in the micropores. All samples were fully characterized using XRD, low temperature nitrogen adsorption, FESEM and EDS. The synthetic route used for obtaining the ZSM-5 zeolite with flower-like morphology is a simple strategy for preparing hierarchical ZSM-5 forms targeting enhanced diffusivity and accessibility of catalytically active sites.",
publisher = "Elsevier B.V.",
journal = "Microporous and Mesoporous Materials",
title = "Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study",
pages = "111534",
volume = "329",
doi = "10.1016/j.micromeso.2021.111534"
}

Bosnar, S., Rac, V., Stošić, D., Travert, A., Postole, G., Auroux, A., Škapin, S., Damjanović-Vasilić, L., Bronić, J., Du, X., Marković, S., Pavlović, V.,& Rakić, V.. (2021). Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study. in Microporous and Mesoporous Materials
Elsevier B.V.., 329, 111534.
https://doi.org/10.1016/j.micromeso.2021.111534

Bosnar S, Rac V, Stošić D, Travert A, Postole G, Auroux A, Škapin S, Damjanović-Vasilić L, Bronić J, Du X, Marković S, Pavlović V, Rakić V. Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study. in Microporous and Mesoporous Materials. 2021;329:111534.
doi:10.1016/j.micromeso.2021.111534 .

Bosnar, Sanja, Rac, Vladislav, Stošić, Dušan, Travert, Arnaud, Postole, Georgeta, Auroux, Aline, Škapin, Srečo, Damjanović-Vasilić, Ljiljana, Bronić, Josip, Du, Xuesen, Marković, Smilja, Pavlović, Vladimir, Rakić, Vesna, "Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study" in Microporous and Mesoporous Materials, 329 (2021):111534,
https://doi.org/10.1016/j.micromeso.2021.111534 . .

TY  - JOUR
AU  - Milanović, Jelena
AU  - Malićanin, Marko
AU  - Rakić, Vesna
AU  - Jevremović, Nenad
AU  - Karabegović, Ivana
AU  - Danilović, Bojana
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5948
AB  - Valorization of winery waste is a promising solution for waste management with additional benefit of bioactive compounds isolation. The aim of this study was to analyze the nutritional and bioactive potential of oil derived from Serbian autochthonous grape seed variety Prokupac and to compare it with known international grape varieties. Additionally, two extraction methods (ultrasound assisted extraction and cold pressing) were used in order to determine their influence on physico-chemical and nutritive characteristics of grape seed oil. Different methods, including determination of physicochemical properties, content of bioactive compounds, oxidative stability and antioxidative capacity were used for the characterization of grape seed oils. Results indicated that the higher yield was obtained by ultrasound assisted extraction compared to cold pressing. The application of ultrasound assisted extraction resulted in increased α-tocopherol content and better antioxidant capacity and oxidative stability of oil. Significant differences in bioactive composition were observed for Prokupac seed oil compared to the other grape varieties. Oil extracted from Prokupac grape seed had the lowest content of polyunsaturated and the highest content of saturated fatty acids, the highest content of α-tocopherol and consequently, the best antioxidative capacity. Prokupac grape seed has a great potential for isolation of nutritive and bioactive valuable oil.
PB  - MDPI
T2  - Agronomy
T1  - Valorization of Winery Waste: Prokupac Grape Seed as a Source of Nutritionally Valuable Oil
IS  - 9
SP  - 1864
VL  - 11
DO  - 10.3390/agronomy11091864
ER  - 

@article{
author = "Milanović, Jelena and Malićanin, Marko and Rakić, Vesna and Jevremović, Nenad and Karabegović, Ivana and Danilović, Bojana",
year = "2021",
abstract = "Valorization of winery waste is a promising solution for waste management with additional benefit of bioactive compounds isolation. The aim of this study was to analyze the nutritional and bioactive potential of oil derived from Serbian autochthonous grape seed variety Prokupac and to compare it with known international grape varieties. Additionally, two extraction methods (ultrasound assisted extraction and cold pressing) were used in order to determine their influence on physico-chemical and nutritive characteristics of grape seed oil. Different methods, including determination of physicochemical properties, content of bioactive compounds, oxidative stability and antioxidative capacity were used for the characterization of grape seed oils. Results indicated that the higher yield was obtained by ultrasound assisted extraction compared to cold pressing. The application of ultrasound assisted extraction resulted in increased α-tocopherol content and better antioxidant capacity and oxidative stability of oil. Significant differences in bioactive composition were observed for Prokupac seed oil compared to the other grape varieties. Oil extracted from Prokupac grape seed had the lowest content of polyunsaturated and the highest content of saturated fatty acids, the highest content of α-tocopherol and consequently, the best antioxidative capacity. Prokupac grape seed has a great potential for isolation of nutritive and bioactive valuable oil.",
publisher = "MDPI",
journal = "Agronomy",
title = "Valorization of Winery Waste: Prokupac Grape Seed as a Source of Nutritionally Valuable Oil",
number = "9",
pages = "1864",
volume = "11",
doi = "10.3390/agronomy11091864"
}

Milanović, J., Malićanin, M., Rakić, V., Jevremović, N., Karabegović, I.,& Danilović, B.. (2021). Valorization of Winery Waste: Prokupac Grape Seed as a Source of Nutritionally Valuable Oil. in Agronomy
MDPI., 11(9), 1864.
https://doi.org/10.3390/agronomy11091864

Milanović J, Malićanin M, Rakić V, Jevremović N, Karabegović I, Danilović B. Valorization of Winery Waste: Prokupac Grape Seed as a Source of Nutritionally Valuable Oil. in Agronomy. 2021;11(9):1864.
doi:10.3390/agronomy11091864 .

Milanović, Jelena, Malićanin, Marko, Rakić, Vesna, Jevremović, Nenad, Karabegović, Ivana, Danilović, Bojana, "Valorization of Winery Waste: Prokupac Grape Seed as a Source of Nutritionally Valuable Oil" in Agronomy, 11, no. 9 (2021):1864,
https://doi.org/10.3390/agronomy11091864 . .

TY  - JOUR
AU  - Wan, Yuyi
AU  - Yang, Guangpeng
AU  - Xiang, Jinyao
AU  - Shen, Xiaoqiang
AU  - Yang, Dafei
AU  - Chen, Yanrong
AU  - Rac, Vladislav
AU  - Rakić, Vesna
AU  - Du, Xuesen
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5328
AB  - Cu-SAPO-34 catalysts with varied Cu loadings were synthesized through ion exchange to study the influence of water on the NH3-SCR reaction. The catalytic activities were evaluated by selective catalytic reduction of NO under a reactant feed in the presence/absence of water. Transient experiments were designed to study the response of NO conversion to the presence of water. H-2-TPR and DFT calculations were performed to study the reducibility of Cu species. NH3-TPD and XPS were conducted to reveal the migration of Cu species. The results show that water could remarkably improve NO reduction activities and the promoting effect is more significant on the catalyst with low Cu loading. Both transient and permanent influences were found in this promoting phenomenon. For the transient influence, water has been proved to accelerate the re-oxidation half-cycle. Moreover, water can enhance the promoting effect of the SCR feed on the migration of Cu species. These unanchored Cu ions migrate to defect sites to form active sites, which lead to a permanent influence of water.
PB  - Royal Soc Chemistry, Cambridge
T2  - Dalton Transactions
T1  - Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species
EP  - 773
IS  - 3
SP  - 764
VL  - 49
DO  - 10.1039/c9dt03848e
ER  - 

@article{
author = "Wan, Yuyi and Yang, Guangpeng and Xiang, Jinyao and Shen, Xiaoqiang and Yang, Dafei and Chen, Yanrong and Rac, Vladislav and Rakić, Vesna and Du, Xuesen",
year = "2020",
abstract = "Cu-SAPO-34 catalysts with varied Cu loadings were synthesized through ion exchange to study the influence of water on the NH3-SCR reaction. The catalytic activities were evaluated by selective catalytic reduction of NO under a reactant feed in the presence/absence of water. Transient experiments were designed to study the response of NO conversion to the presence of water. H-2-TPR and DFT calculations were performed to study the reducibility of Cu species. NH3-TPD and XPS were conducted to reveal the migration of Cu species. The results show that water could remarkably improve NO reduction activities and the promoting effect is more significant on the catalyst with low Cu loading. Both transient and permanent influences were found in this promoting phenomenon. For the transient influence, water has been proved to accelerate the re-oxidation half-cycle. Moreover, water can enhance the promoting effect of the SCR feed on the migration of Cu species. These unanchored Cu ions migrate to defect sites to form active sites, which lead to a permanent influence of water.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Dalton Transactions",
title = "Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species",
pages = "773-764",
number = "3",
volume = "49",
doi = "10.1039/c9dt03848e"
}

Wan, Y., Yang, G., Xiang, J., Shen, X., Yang, D., Chen, Y., Rac, V., Rakić, V.,& Du, X.. (2020). Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species. in Dalton Transactions
Royal Soc Chemistry, Cambridge., 49(3), 764-773.
https://doi.org/10.1039/c9dt03848e

Wan Y, Yang G, Xiang J, Shen X, Yang D, Chen Y, Rac V, Rakić V, Du X. Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species. in Dalton Transactions. 2020;49(3):764-773.
doi:10.1039/c9dt03848e .

Wan, Yuyi, Yang, Guangpeng, Xiang, Jinyao, Shen, Xiaoqiang, Yang, Dafei, Chen, Yanrong, Rac, Vladislav, Rakić, Vesna, Du, Xuesen, "Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species" in Dalton Transactions, 49, no. 3 (2020):764-773,
https://doi.org/10.1039/c9dt03848e . .

TY  - JOUR
AU  - Nie, Hua
AU  - Li, Wei
AU  - Wu, Qirong
AU  - Rac, Vladislav
AU  - Rakić, Vesna
AU  - Du, Xuesen
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5343
AB  - Poisoning effects by alkali metal chlorides is one of the major reasons for the deactivation of SCR catalyst in biomass-fired plants. In this study, the influence of KCl on two vanadium-based catalysts with different promoters, V2O5-WO3/TiO2 and V2O5-Ce(SO4)(2)/TiO2, was investigated. The catalytic activity of the fresh V2O5-WO3/TiO2 was higher than that of V2O5-Ce(SO4)(2)/TiO2 at low temperatures. V2O5-Ce(SO4)(2)/TiO2 performed better than V2O5-WO3/TiO2 when KCl was deposited on the catalyst surface. Both poisoned catalysts were efficiently regenerated by SO2 treatment. The characterization results show that the reducibility and acidity of the catalysts were weakened by KCl deposition but regenerated by SO2.
PB  - MDPI, BASEL
T2  - Catalysts
T1  - The Poisoning of V2O5-WO3/TiO2 and V2O5-Ce(SO4)(2)/TiO2 SCR Catalysts by KCl and The Partial Regeneration by SO2
IS  - 2
VL  - 10
DO  - 10.3390/catal10020207
ER  - 

@article{
author = "Nie, Hua and Li, Wei and Wu, Qirong and Rac, Vladislav and Rakić, Vesna and Du, Xuesen",
year = "2020",
abstract = "Poisoning effects by alkali metal chlorides is one of the major reasons for the deactivation of SCR catalyst in biomass-fired plants. In this study, the influence of KCl on two vanadium-based catalysts with different promoters, V2O5-WO3/TiO2 and V2O5-Ce(SO4)(2)/TiO2, was investigated. The catalytic activity of the fresh V2O5-WO3/TiO2 was higher than that of V2O5-Ce(SO4)(2)/TiO2 at low temperatures. V2O5-Ce(SO4)(2)/TiO2 performed better than V2O5-WO3/TiO2 when KCl was deposited on the catalyst surface. Both poisoned catalysts were efficiently regenerated by SO2 treatment. The characterization results show that the reducibility and acidity of the catalysts were weakened by KCl deposition but regenerated by SO2.",
publisher = "MDPI, BASEL",
journal = "Catalysts",
title = "The Poisoning of V2O5-WO3/TiO2 and V2O5-Ce(SO4)(2)/TiO2 SCR Catalysts by KCl and The Partial Regeneration by SO2",
number = "2",
volume = "10",
doi = "10.3390/catal10020207"
}

Nie, H., Li, W., Wu, Q., Rac, V., Rakić, V.,& Du, X.. (2020). The Poisoning of V2O5-WO3/TiO2 and V2O5-Ce(SO4)(2)/TiO2 SCR Catalysts by KCl and The Partial Regeneration by SO2. in Catalysts
MDPI, BASEL., 10(2).
https://doi.org/10.3390/catal10020207

Nie H, Li W, Wu Q, Rac V, Rakić V, Du X. The Poisoning of V2O5-WO3/TiO2 and V2O5-Ce(SO4)(2)/TiO2 SCR Catalysts by KCl and The Partial Regeneration by SO2. in Catalysts. 2020;10(2).
doi:10.3390/catal10020207 .

Nie, Hua, Li, Wei, Wu, Qirong, Rac, Vladislav, Rakić, Vesna, Du, Xuesen, "The Poisoning of V2O5-WO3/TiO2 and V2O5-Ce(SO4)(2)/TiO2 SCR Catalysts by KCl and The Partial Regeneration by SO2" in Catalysts, 10, no. 2 (2020),
https://doi.org/10.3390/catal10020207 . .

TY  - JOUR
AU  - Yang, Guangpeng
AU  - Du, Xuesen
AU  - Ran, Jingyu
AU  - Wang, Xiangmin
AU  - Chen, Yanrong
AU  - Zhang, Li
AU  - Rac, Vladislav
AU  - Rakić, Vesna
AU  - Crittenden, John
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5346
AB  - SCR activity of Cu-SAPO-34 catalyst was reduced by alkali metal ions. The alkali metals ions (Li+, Na+ and K+) have shown irregular influences on Cu-SAPO-34. The order of poisoning strengths under 400 degrees C was found to be: Na+ > K+ Li+, which is not consistent with the basicities of their corresponding metals. Experimental results and calculations showed that the alkali metal ions readily replace H+ and Cu2+/Cu3+ ions. These exchanges result in the loss of Bronsted acid sites and migration of isolated Cu2+ ions in Cu-SAPO-34, which decrease the NH3-SCR activity. Both the basicity and ion diameter will affect the exchanging behavior of an alkali ion. Na+ and Li+ ions will influence both H+ and Cu2+/Cu+ ions but K+ ions only preferably replace the H+ We hypothesize that K+ cannot enter into a small ring (6-membered ring) to replace a Cu2+/Cu+ ion because of its large ion diameter. The displaced Cu2+/Cu+ ions will transfer to adjacent unbonded Al site to form a CuAlO2 species.
PB  - Elsevier, Amsterdam
T2  - Journal of Hazardous Materials
T1  - Irregular influence of alkali metals on Cu-SAPO-34 catalyst for selective catalytic reduction of NOx with ammonia
VL  - 387
DO  - 10.1016/j.jhazmat.2019.122007
ER  - 

@article{
author = "Yang, Guangpeng and Du, Xuesen and Ran, Jingyu and Wang, Xiangmin and Chen, Yanrong and Zhang, Li and Rac, Vladislav and Rakić, Vesna and Crittenden, John",
year = "2020",
abstract = "SCR activity of Cu-SAPO-34 catalyst was reduced by alkali metal ions. The alkali metals ions (Li+, Na+ and K+) have shown irregular influences on Cu-SAPO-34. The order of poisoning strengths under 400 degrees C was found to be: Na+ > K+ Li+, which is not consistent with the basicities of their corresponding metals. Experimental results and calculations showed that the alkali metal ions readily replace H+ and Cu2+/Cu3+ ions. These exchanges result in the loss of Bronsted acid sites and migration of isolated Cu2+ ions in Cu-SAPO-34, which decrease the NH3-SCR activity. Both the basicity and ion diameter will affect the exchanging behavior of an alkali ion. Na+ and Li+ ions will influence both H+ and Cu2+/Cu+ ions but K+ ions only preferably replace the H+ We hypothesize that K+ cannot enter into a small ring (6-membered ring) to replace a Cu2+/Cu+ ion because of its large ion diameter. The displaced Cu2+/Cu+ ions will transfer to adjacent unbonded Al site to form a CuAlO2 species.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Hazardous Materials",
title = "Irregular influence of alkali metals on Cu-SAPO-34 catalyst for selective catalytic reduction of NOx with ammonia",
volume = "387",
doi = "10.1016/j.jhazmat.2019.122007"
}

Yang, G., Du, X., Ran, J., Wang, X., Chen, Y., Zhang, L., Rac, V., Rakić, V.,& Crittenden, J.. (2020). Irregular influence of alkali metals on Cu-SAPO-34 catalyst for selective catalytic reduction of NOx with ammonia. in Journal of Hazardous Materials
Elsevier, Amsterdam., 387.
https://doi.org/10.1016/j.jhazmat.2019.122007

Yang G, Du X, Ran J, Wang X, Chen Y, Zhang L, Rac V, Rakić V, Crittenden J. Irregular influence of alkali metals on Cu-SAPO-34 catalyst for selective catalytic reduction of NOx with ammonia. in Journal of Hazardous Materials. 2020;387.
doi:10.1016/j.jhazmat.2019.122007 .

Yang, Guangpeng, Du, Xuesen, Ran, Jingyu, Wang, Xiangmin, Chen, Yanrong, Zhang, Li, Rac, Vladislav, Rakić, Vesna, Crittenden, John, "Irregular influence of alkali metals on Cu-SAPO-34 catalyst for selective catalytic reduction of NOx with ammonia" in Journal of Hazardous Materials, 387 (2020),
https://doi.org/10.1016/j.jhazmat.2019.122007 . .

TY  - JOUR
AU  - Rac, Vladislav
AU  - Rakić, Vesna
AU  - Stošić, Dušan
AU  - Pavlović, Vladimir
AU  - Bosnar, Sanja
AU  - Auroux, Aline
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5365
AB  - The possibility of removal of pharmaceutically active substances, atenolol, diclofenac sodium and salicylic acid, from water solutions using hierarchical form of zeolite ZSM-5 is investigated in this paper. Mesopore formation in ZSM-5 was achieved using alkaline treatment. Zeolitic samples were characterized by X-ray diffraction, low temperature nitrogen adsorption, solid-state 27A1 MAS NMR, point of zero charge determination and microcalorimetry - volumetry of ammonia adsorption. Adsorption isotherms of pharmaceutically active substances were obtained and liquid calorimetric experiments were used to evaluate the strength of interactions. The capacity for salicylic acid adsorption measured for the mesoporous sample did not significantly differ from the results obtained for the parent ZSM-5. However, in the case of atenolol and diclofenac sodium, mesoporous ZSM-5 exhibited increased adsorption capacities. Calorimetric data revealed higher heats of atenolol adsorption on mesoporous ZSM-5, compared to the parent. Based on similar acidity and surface charge determined for the two samples, our results show that geometry and dimensions of both zeolite pores and adsorbing molecules play a crucial role in the studied adsorption processes and that tailoring ZSM-5 porosity by desilication can be used to expand its applicability in depollution processes.
PB  - Elsevier, Amsterdam
T2  - Arabian Journal of Chemistry
T1  - Enhanced accessibility of active sites in hierarchical ZSM-5 zeolite for removal of pharmaceutically active substances: Adsorption and microcalorimetric study
EP  - 1954
IS  - 1
SP  - 1945
VL  - 13
DO  - 10.1016/j.arabjc.2018.02.012
ER  - 

@article{
author = "Rac, Vladislav and Rakić, Vesna and Stošić, Dušan and Pavlović, Vladimir and Bosnar, Sanja and Auroux, Aline",
year = "2020",
abstract = "The possibility of removal of pharmaceutically active substances, atenolol, diclofenac sodium and salicylic acid, from water solutions using hierarchical form of zeolite ZSM-5 is investigated in this paper. Mesopore formation in ZSM-5 was achieved using alkaline treatment. Zeolitic samples were characterized by X-ray diffraction, low temperature nitrogen adsorption, solid-state 27A1 MAS NMR, point of zero charge determination and microcalorimetry - volumetry of ammonia adsorption. Adsorption isotherms of pharmaceutically active substances were obtained and liquid calorimetric experiments were used to evaluate the strength of interactions. The capacity for salicylic acid adsorption measured for the mesoporous sample did not significantly differ from the results obtained for the parent ZSM-5. However, in the case of atenolol and diclofenac sodium, mesoporous ZSM-5 exhibited increased adsorption capacities. Calorimetric data revealed higher heats of atenolol adsorption on mesoporous ZSM-5, compared to the parent. Based on similar acidity and surface charge determined for the two samples, our results show that geometry and dimensions of both zeolite pores and adsorbing molecules play a crucial role in the studied adsorption processes and that tailoring ZSM-5 porosity by desilication can be used to expand its applicability in depollution processes.",
publisher = "Elsevier, Amsterdam",
journal = "Arabian Journal of Chemistry",
title = "Enhanced accessibility of active sites in hierarchical ZSM-5 zeolite for removal of pharmaceutically active substances: Adsorption and microcalorimetric study",
pages = "1954-1945",
number = "1",
volume = "13",
doi = "10.1016/j.arabjc.2018.02.012"
}

Rac, V., Rakić, V., Stošić, D., Pavlović, V., Bosnar, S.,& Auroux, A.. (2020). Enhanced accessibility of active sites in hierarchical ZSM-5 zeolite for removal of pharmaceutically active substances: Adsorption and microcalorimetric study. in Arabian Journal of Chemistry
Elsevier, Amsterdam., 13(1), 1945-1954.
https://doi.org/10.1016/j.arabjc.2018.02.012

Rac V, Rakić V, Stošić D, Pavlović V, Bosnar S, Auroux A. Enhanced accessibility of active sites in hierarchical ZSM-5 zeolite for removal of pharmaceutically active substances: Adsorption and microcalorimetric study. in Arabian Journal of Chemistry. 2020;13(1):1945-1954.
doi:10.1016/j.arabjc.2018.02.012 .

Rac, Vladislav, Rakić, Vesna, Stošić, Dušan, Pavlović, Vladimir, Bosnar, Sanja, Auroux, Aline, "Enhanced accessibility of active sites in hierarchical ZSM-5 zeolite for removal of pharmaceutically active substances: Adsorption and microcalorimetric study" in Arabian Journal of Chemistry, 13, no. 1 (2020):1945-1954,
https://doi.org/10.1016/j.arabjc.2018.02.012 . .

TY  - JOUR
AU  - Rac, Vladislav
AU  - Rakić, Vesna
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5475
AB  - The work presented in this paper was dedicated to the investigation of the influence of the alkaline treatment parameters on the formation of mesopores in zeolite ZSM-5, SiO2/Al2O3=50. Concentration of NaOH, temperature and tretment duration were varied. The obtained samples were characterized using low temperature nitrogen adsorption, X ray diffraction and solid state 27Al MAS NMR spectroscopy. Formation of mesopores was found to be a process sensitive to changes of treatment parameters, which can lead to creation of hierarchical zeolites with different mesopore surfaces and distributions of pore size diameters. Also, treatment duration was found to have a lesser influence on the process, compared to other two investigated parameters. Mesopore introduction resulted in partial crystallinity reduction, in all modified samples. No significant buildup of extraframework Al was detected.
AB  - U ovom radu prikazani su rezultati ispitivanja uticaja parametara alkalnog tretmana na formiranje mezopora u zeolitu ZSM-5, SiO2/Al2O3=50. Varirane su koncentracija natrijum hidroksida, temperatura i trajanje tratmana. Uzorci dobijenih hijerarhijskih formi zeolita ZSM-5 okarakterisani su metodama niskotemperaturske adsorpcije azota, rendgenskom difrakcionom analizom i 27Al MAS NMR sprektroskopijom čvrstog stanja. Utvrđeno je da je formiranje mezopora u zeolitu ZSM-5 proces osetljiv na promene ispitivanih parametara i da je moguće kreiranje hijerarhijskih ZSM-5 zeolita sa različitim veličinama mezoporoznih površina i raspodelama dijametara pora. Takođe, utvrđeno je da koncentracija NaOH i temperatura tretmana imaju značajniji uticaj na formiranje mezoporoznosti od trajanja tretmana. Dobijeni rezultati pokazuju da je formiranje mezopora ovim postupkom praćeno delimičnim smanjenjem kristaliniteta uzoraka zeolita. Na osnovu 27Al MAS NMR sprektroskopije zaključeno je da tretman nije doprineo stvaranju značajnih količina vanmrežnog aluminijuma.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Mesopore creation in zeolite ZSM-5: Influence of NaOH concentration, temperature and treatment duration
T1  - Kreiranje mezopora u zeolitu ZSM-5 alkalnim tretmanom - uticaj koncentracije NaOH, temperature i trajanja tretmana
EP  - 14
IS  - 1
SP  - 9
VL  - 75
DO  - 10.5937/tehnika2001009R
ER  - 

@article{
author = "Rac, Vladislav and Rakić, Vesna",
year = "2020",
abstract = "The work presented in this paper was dedicated to the investigation of the influence of the alkaline treatment parameters on the formation of mesopores in zeolite ZSM-5, SiO2/Al2O3=50. Concentration of NaOH, temperature and tretment duration were varied. The obtained samples were characterized using low temperature nitrogen adsorption, X ray diffraction and solid state 27Al MAS NMR spectroscopy. Formation of mesopores was found to be a process sensitive to changes of treatment parameters, which can lead to creation of hierarchical zeolites with different mesopore surfaces and distributions of pore size diameters. Also, treatment duration was found to have a lesser influence on the process, compared to other two investigated parameters. Mesopore introduction resulted in partial crystallinity reduction, in all modified samples. No significant buildup of extraframework Al was detected., U ovom radu prikazani su rezultati ispitivanja uticaja parametara alkalnog tretmana na formiranje mezopora u zeolitu ZSM-5, SiO2/Al2O3=50. Varirane su koncentracija natrijum hidroksida, temperatura i trajanje tratmana. Uzorci dobijenih hijerarhijskih formi zeolita ZSM-5 okarakterisani su metodama niskotemperaturske adsorpcije azota, rendgenskom difrakcionom analizom i 27Al MAS NMR sprektroskopijom čvrstog stanja. Utvrđeno je da je formiranje mezopora u zeolitu ZSM-5 proces osetljiv na promene ispitivanih parametara i da je moguće kreiranje hijerarhijskih ZSM-5 zeolita sa različitim veličinama mezoporoznih površina i raspodelama dijametara pora. Takođe, utvrđeno je da koncentracija NaOH i temperatura tretmana imaju značajniji uticaj na formiranje mezoporoznosti od trajanja tretmana. Dobijeni rezultati pokazuju da je formiranje mezopora ovim postupkom praćeno delimičnim smanjenjem kristaliniteta uzoraka zeolita. Na osnovu 27Al MAS NMR sprektroskopije zaključeno je da tretman nije doprineo stvaranju značajnih količina vanmrežnog aluminijuma.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Mesopore creation in zeolite ZSM-5: Influence of NaOH concentration, temperature and treatment duration, Kreiranje mezopora u zeolitu ZSM-5 alkalnim tretmanom - uticaj koncentracije NaOH, temperature i trajanja tretmana",
pages = "14-9",
number = "1",
volume = "75",
doi = "10.5937/tehnika2001009R"
}

Rac, V.,& Rakić, V.. (2020). Mesopore creation in zeolite ZSM-5: Influence of NaOH concentration, temperature and treatment duration. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 75(1), 9-14.
https://doi.org/10.5937/tehnika2001009R

Rac V, Rakić V. Mesopore creation in zeolite ZSM-5: Influence of NaOH concentration, temperature and treatment duration. in Tehnika. 2020;75(1):9-14.
doi:10.5937/tehnika2001009R .

Rac, Vladislav, Rakić, Vesna, "Mesopore creation in zeolite ZSM-5: Influence of NaOH concentration, temperature and treatment duration" in Tehnika, 75, no. 1 (2020):9-14,
https://doi.org/10.5937/tehnika2001009R . .

TY  - JOUR
AU  - Yilmaztekin, Murat
AU  - Lević, Steva
AU  - Kalušević, Ana
AU  - Cam, Mustafa
AU  - Bugarski, Branko
AU  - Rakić, Vesna
AU  - Pavlović, Vladimir
AU  - Nedović, Viktor
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5760
AB  - Aim: The aim was to choose the optimal encapsulation system and to incorporate encapsulates loaded with essential oil into the ice cream as a model food product. Methods: Ca-alginate beads were produced by electrostatic extrusion process. Gelatine/alginate coacervates were processed with coacervation. Carnauba wax microparticles were produced using melt dispersion process. Morphological properties, chemical, and thermal stabilities of encapsulates were tested by SEM, FTIR spectral, and thermogravimetric analysis. Results: Alginate provided sufficient emulsion stability over 1 h. Ca-alginate showed higher encapsulation efficiency (EE) (98.4 +/- 4.3%) compared to carnauba wax (94.2 +/- 7.8%) and gelatine/alginate coacervates (13.2 +/- 1.2%). The presence of essential oil in all three types of encapsulates confirmed with FTIR. The encapsulation process ensured controlled release and thermal stability of the oil. Conclusions: Ca-alginate matrix as the most suitable for peppermint essential oil encapsulation. The sensory analysis showed that ice cream incorporating encapsulates is a promising system for the consumption of health beneficial peppermint essential oil.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Microencapsulation
T1  - Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates
EP  - 119
IS  - 2
SP  - 109
VL  - 36
DO  - 10.1080/02652048.2019.1607596
ER  - 

@article{
author = "Yilmaztekin, Murat and Lević, Steva and Kalušević, Ana and Cam, Mustafa and Bugarski, Branko and Rakić, Vesna and Pavlović, Vladimir and Nedović, Viktor",
year = "2019",
abstract = "Aim: The aim was to choose the optimal encapsulation system and to incorporate encapsulates loaded with essential oil into the ice cream as a model food product. Methods: Ca-alginate beads were produced by electrostatic extrusion process. Gelatine/alginate coacervates were processed with coacervation. Carnauba wax microparticles were produced using melt dispersion process. Morphological properties, chemical, and thermal stabilities of encapsulates were tested by SEM, FTIR spectral, and thermogravimetric analysis. Results: Alginate provided sufficient emulsion stability over 1 h. Ca-alginate showed higher encapsulation efficiency (EE) (98.4 +/- 4.3%) compared to carnauba wax (94.2 +/- 7.8%) and gelatine/alginate coacervates (13.2 +/- 1.2%). The presence of essential oil in all three types of encapsulates confirmed with FTIR. The encapsulation process ensured controlled release and thermal stability of the oil. Conclusions: Ca-alginate matrix as the most suitable for peppermint essential oil encapsulation. The sensory analysis showed that ice cream incorporating encapsulates is a promising system for the consumption of health beneficial peppermint essential oil.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Microencapsulation",
title = "Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates",
pages = "119-109",
number = "2",
volume = "36",
doi = "10.1080/02652048.2019.1607596"
}

Yilmaztekin, M., Lević, S., Kalušević, A., Cam, M., Bugarski, B., Rakić, V., Pavlović, V.,& Nedović, V.. (2019). Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates. in Journal of Microencapsulation
Taylor & Francis Ltd, Abingdon., 36(2), 109-119.
https://doi.org/10.1080/02652048.2019.1607596

Yilmaztekin M, Lević S, Kalušević A, Cam M, Bugarski B, Rakić V, Pavlović V, Nedović V. Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates. in Journal of Microencapsulation. 2019;36(2):109-119.
doi:10.1080/02652048.2019.1607596 .

Yilmaztekin, Murat, Lević, Steva, Kalušević, Ana, Cam, Mustafa, Bugarski, Branko, Rakić, Vesna, Pavlović, Vladimir, Nedović, Viktor, "Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates" in Journal of Microencapsulation, 36, no. 2 (2019):109-119,
https://doi.org/10.1080/02652048.2019.1607596 . .

TY  - JOUR
AU  - Yilmaztekin, Murat
AU  - Lević, Steva
AU  - Kalušević, Ana
AU  - Cam, Mustafa
AU  - Bugarski, Branko
AU  - Rakić, Vesna
AU  - Pavlović, Vladimir
AU  - Nedović, Viktor
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5103
AB  - Aim: The aim was to choose the optimal encapsulation system and to incorporate encapsulates loaded with essential oil into the ice cream as a model food product. Methods: Ca-alginate beads were produced by electrostatic extrusion process. Gelatine/alginate coacervates were processed with coacervation. Carnauba wax microparticles were produced using melt dispersion process. Morphological properties, chemical, and thermal stabilities of encapsulates were tested by SEM, FTIR spectral, and thermogravimetric analysis. Results: Alginate provided sufficient emulsion stability over 1 h. Ca-alginate showed higher encapsulation efficiency (EE) (98.4 +/- 4.3%) compared to carnauba wax (94.2 +/- 7.8%) and gelatine/alginate coacervates (13.2 +/- 1.2%). The presence of essential oil in all three types of encapsulates confirmed with FTIR. The encapsulation process ensured controlled release and thermal stability of the oil. Conclusions: Ca-alginate matrix as the most suitable for peppermint essential oil encapsulation. The sensory analysis showed that ice cream incorporating encapsulates is a promising system for the consumption of health beneficial peppermint essential oil.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Microencapsulation
T1  - Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates
EP  - 119
IS  - 2
SP  - 109
VL  - 36
DO  - 10.1080/02652048.2019.1607596
ER  - 

@article{
author = "Yilmaztekin, Murat and Lević, Steva and Kalušević, Ana and Cam, Mustafa and Bugarski, Branko and Rakić, Vesna and Pavlović, Vladimir and Nedović, Viktor",
year = "2019",
abstract = "Aim: The aim was to choose the optimal encapsulation system and to incorporate encapsulates loaded with essential oil into the ice cream as a model food product. Methods: Ca-alginate beads were produced by electrostatic extrusion process. Gelatine/alginate coacervates were processed with coacervation. Carnauba wax microparticles were produced using melt dispersion process. Morphological properties, chemical, and thermal stabilities of encapsulates were tested by SEM, FTIR spectral, and thermogravimetric analysis. Results: Alginate provided sufficient emulsion stability over 1 h. Ca-alginate showed higher encapsulation efficiency (EE) (98.4 +/- 4.3%) compared to carnauba wax (94.2 +/- 7.8%) and gelatine/alginate coacervates (13.2 +/- 1.2%). The presence of essential oil in all three types of encapsulates confirmed with FTIR. The encapsulation process ensured controlled release and thermal stability of the oil. Conclusions: Ca-alginate matrix as the most suitable for peppermint essential oil encapsulation. The sensory analysis showed that ice cream incorporating encapsulates is a promising system for the consumption of health beneficial peppermint essential oil.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Microencapsulation",
title = "Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates",
pages = "119-109",
number = "2",
volume = "36",
doi = "10.1080/02652048.2019.1607596"
}

Yilmaztekin, M., Lević, S., Kalušević, A., Cam, M., Bugarski, B., Rakić, V., Pavlović, V.,& Nedović, V.. (2019). Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates. in Journal of Microencapsulation
Taylor & Francis Ltd, Abingdon., 36(2), 109-119.
https://doi.org/10.1080/02652048.2019.1607596

Yilmaztekin M, Lević S, Kalušević A, Cam M, Bugarski B, Rakić V, Pavlović V, Nedović V. Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates. in Journal of Microencapsulation. 2019;36(2):109-119.
doi:10.1080/02652048.2019.1607596 .

Yilmaztekin, Murat, Lević, Steva, Kalušević, Ana, Cam, Mustafa, Bugarski, Branko, Rakić, Vesna, Pavlović, Vladimir, Nedović, Viktor, "Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates" in Journal of Microencapsulation, 36, no. 2 (2019):109-119,
https://doi.org/10.1080/02652048.2019.1607596 . .

TY  - JOUR
AU  - Poleksić, Dajana T.
AU  - Pavlićević, Milica Ž.
AU  - Raković-Simić, Jelena M.
AU  - Rac, Vladislav
AU  - Vučelić-Radović, Biljana
AU  - Rakić, Vesna
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4777
AB  - Two different ways of extracting antioxidative compounds (including soluble polyphenols) from rusks made from wheat flour with added millet (Panicum miliaceum L.) were compared, i.e., solvent extraction and in vitro digestion. Wheat flour was replaced by millet flour in amounts of 10, 20 or 30 wt. % (per dry mass). Solvent extraction was realized using a mixture of ethanol and water in different percentages, with or without the addition of formic acid. The total content of phenolic compounds (TPC) was determined using Folin-Ciocalteu reagent, while the antioxidative capacity was measured by the DPPH (2,2-diphenyl-1-picrylhydrazyl) assay. The efficiency of solvent extraction was enhanced by the addition of formic acid. The addition of millet flour in amounts up to 20 % enhanced the antioxidative properties. It was shown that in vitro digestion was more efficient in the extraction of antioxidative compounds, in comparison with solvent extraction.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - The extraction of antioxidative compounds from rusks enriched with millet flour (Panicum miliaceum L.)
EP  - 732
IS  - 6
SP  - 723
VL  - 83
DO  - 10.2298/JSC171229028P
ER  - 

@article{
author = "Poleksić, Dajana T. and Pavlićević, Milica Ž. and Raković-Simić, Jelena M. and Rac, Vladislav and Vučelić-Radović, Biljana and Rakić, Vesna",
year = "2018",
abstract = "Two different ways of extracting antioxidative compounds (including soluble polyphenols) from rusks made from wheat flour with added millet (Panicum miliaceum L.) were compared, i.e., solvent extraction and in vitro digestion. Wheat flour was replaced by millet flour in amounts of 10, 20 or 30 wt. % (per dry mass). Solvent extraction was realized using a mixture of ethanol and water in different percentages, with or without the addition of formic acid. The total content of phenolic compounds (TPC) was determined using Folin-Ciocalteu reagent, while the antioxidative capacity was measured by the DPPH (2,2-diphenyl-1-picrylhydrazyl) assay. The efficiency of solvent extraction was enhanced by the addition of formic acid. The addition of millet flour in amounts up to 20 % enhanced the antioxidative properties. It was shown that in vitro digestion was more efficient in the extraction of antioxidative compounds, in comparison with solvent extraction.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "The extraction of antioxidative compounds from rusks enriched with millet flour (Panicum miliaceum L.)",
pages = "732-723",
number = "6",
volume = "83",
doi = "10.2298/JSC171229028P"
}

Poleksić, D. T., Pavlićević, M. Ž., Raković-Simić, J. M., Rac, V., Vučelić-Radović, B.,& Rakić, V.. (2018). The extraction of antioxidative compounds from rusks enriched with millet flour (Panicum miliaceum L.). in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 83(6), 723-732.
https://doi.org/10.2298/JSC171229028P

Poleksić DT, Pavlićević MŽ, Raković-Simić JM, Rac V, Vučelić-Radović B, Rakić V. The extraction of antioxidative compounds from rusks enriched with millet flour (Panicum miliaceum L.). in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2018;83(6):723-732.
doi:10.2298/JSC171229028P .

Poleksić, Dajana T., Pavlićević, Milica Ž., Raković-Simić, Jelena M., Rac, Vladislav, Vučelić-Radović, Biljana, Rakić, Vesna, "The extraction of antioxidative compounds from rusks enriched with millet flour (Panicum miliaceum L.)" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 83, no. 6 (2018):723-732,
https://doi.org/10.2298/JSC171229028P . .

TY  - DATA
AU  - Rusmirović, Jelena
AU  - Rančić, Milica P.
AU  - Pavlović, Vladimir B.
AU  - Rakić, Vesna M.
AU  - Stevanović, Sanja
AU  - Đonlagić, Jasna
AU  - Marinković, Aleksandar D.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3757
UR  - https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fmame.201700648&file=mame201700648-sup-0001-S1.pdf
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5727
AB  - Cellulose Nanocrystals (NC) Isolation; Isolation of FAs and Preparation of Methyl Esters of FAs; Chemical Modification of NC with FAs and Methyl Esters of FAs; Curing Kinetics Analysis using Raman Spectroscopy; Transmission Electron Microscopy (TEM) Analysis of Nanocomposite Materials; Mechanical Testing of UPe/m-NC Nanocomposite Materials; Dynamic-Mechanical Analysis of Nanocomposite Materials;
T2  - Macromolecular Materials and Engineering
T1  - Supporting Information for Macromol. Mater. Eng., DOI: 10.1002/mame.201700648: Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances
IS  - 8
VL  - 303
UR  - https://hdl.handle.net/21.15107/rcub_dais_3757
ER  - 

@misc{
author = "Rusmirović, Jelena and Rančić, Milica P. and Pavlović, Vladimir B. and Rakić, Vesna M. and Stevanović, Sanja and Đonlagić, Jasna and Marinković, Aleksandar D.",
year = "2018",
abstract = "Cellulose Nanocrystals (NC) Isolation; Isolation of FAs and Preparation of Methyl Esters of FAs; Chemical Modification of NC with FAs and Methyl Esters of FAs; Curing Kinetics Analysis using Raman Spectroscopy; Transmission Electron Microscopy (TEM) Analysis of Nanocomposite Materials; Mechanical Testing of UPe/m-NC Nanocomposite Materials; Dynamic-Mechanical Analysis of Nanocomposite Materials;",
journal = "Macromolecular Materials and Engineering",
title = "Supporting Information for Macromol. Mater. Eng., DOI: 10.1002/mame.201700648: Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances",
number = "8",
volume = "303",
url = "https://hdl.handle.net/21.15107/rcub_dais_3757"
}

Rusmirović, J., Rančić, M. P., Pavlović, V. B., Rakić, V. M., Stevanović, S., Đonlagić, J.,& Marinković, A. D.. (2018). Supporting Information for Macromol. Mater. Eng., DOI: 10.1002/mame.201700648: Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances. in Macromolecular Materials and Engineering, 303(8).
https://hdl.handle.net/21.15107/rcub_dais_3757

Rusmirović J, Rančić MP, Pavlović VB, Rakić VM, Stevanović S, Đonlagić J, Marinković AD. Supporting Information for Macromol. Mater. Eng., DOI: 10.1002/mame.201700648: Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances. in Macromolecular Materials and Engineering. 2018;303(8).
https://hdl.handle.net/21.15107/rcub_dais_3757 .

Rusmirović, Jelena, Rančić, Milica P., Pavlović, Vladimir B., Rakić, Vesna M., Stevanović, Sanja, Đonlagić, Jasna, Marinković, Aleksandar D., "Supporting Information for Macromol. Mater. Eng., DOI: 10.1002/mame.201700648: Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances" in Macromolecular Materials and Engineering, 303, no. 8 (2018),
https://hdl.handle.net/21.15107/rcub_dais_3757 .

TY  - JOUR
AU  - Rusmirović, Jelena D.
AU  - Rancić, Milica P.
AU  - Pavlović, Vladimir
AU  - Rakić, Vesna
AU  - Stevanović, Sanja
AU  - Djonlagić, Jasna
AU  - Marinković, Aleksandar D.
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4652
AB  - Unsaturated fatty acid (FA)-modified nanocellulose (m-NC) shows potential application in improving mechanical properties of unsaturated polyester/m-NC nanocomposites (UPe/m-NC). A polyester matrix is obtained by polycondensation of maleic anhydride and products of poly(ethylene terephthalate) depolymerization with propylene glycol. Two methods of NC modification are performed: direct esterification with oleic acid, linseed, or sunflower oil FAs, and esterification/amidation with maleic acid/ethylene diamine (MA/EDA) bridging group followed by amidation with methyl ester of FAs. Increases of stress at break in the ranges from 148.8% to 181.4% and from 155.8% to193.0% for UPe/m-NC composites loaded with 1 wt% of NC modified directly or via MA/EDA cross-linker, respectively, are obtained. Results of the modeling of tensile modulus, by using the Cox-Krenchel model, show good agreement with experimentally obtained data. The effect of FAs' cross-linking capabilities on the dynamic-mechanical and thermal properties of the UPe/m-NC is studied. Cross-linking density, modulus, and T-g of the nanocomposite show appropriate relation with the unsaturation extent/structure of NC modification.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Macromolecular Materials and Engineering
T1  - Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances
IS  - 8
VL  - 303
DO  - 10.1002/mame.201700648
ER  - 

@article{
author = "Rusmirović, Jelena D. and Rancić, Milica P. and Pavlović, Vladimir and Rakić, Vesna and Stevanović, Sanja and Djonlagić, Jasna and Marinković, Aleksandar D.",
year = "2018",
abstract = "Unsaturated fatty acid (FA)-modified nanocellulose (m-NC) shows potential application in improving mechanical properties of unsaturated polyester/m-NC nanocomposites (UPe/m-NC). A polyester matrix is obtained by polycondensation of maleic anhydride and products of poly(ethylene terephthalate) depolymerization with propylene glycol. Two methods of NC modification are performed: direct esterification with oleic acid, linseed, or sunflower oil FAs, and esterification/amidation with maleic acid/ethylene diamine (MA/EDA) bridging group followed by amidation with methyl ester of FAs. Increases of stress at break in the ranges from 148.8% to 181.4% and from 155.8% to193.0% for UPe/m-NC composites loaded with 1 wt% of NC modified directly or via MA/EDA cross-linker, respectively, are obtained. Results of the modeling of tensile modulus, by using the Cox-Krenchel model, show good agreement with experimentally obtained data. The effect of FAs' cross-linking capabilities on the dynamic-mechanical and thermal properties of the UPe/m-NC is studied. Cross-linking density, modulus, and T-g of the nanocomposite show appropriate relation with the unsaturation extent/structure of NC modification.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Macromolecular Materials and Engineering",
title = "Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances",
number = "8",
volume = "303",
doi = "10.1002/mame.201700648"
}

Rusmirović, J. D., Rancić, M. P., Pavlović, V., Rakić, V., Stevanović, S., Djonlagić, J.,& Marinković, A. D.. (2018). Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances. in Macromolecular Materials and Engineering
Wiley-V C H Verlag Gmbh, Weinheim., 303(8).
https://doi.org/10.1002/mame.201700648

Rusmirović JD, Rancić MP, Pavlović V, Rakić V, Stevanović S, Djonlagić J, Marinković AD. Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances. in Macromolecular Materials and Engineering. 2018;303(8).
doi:10.1002/mame.201700648 .

Rusmirović, Jelena D., Rancić, Milica P., Pavlović, Vladimir, Rakić, Vesna, Stevanović, Sanja, Djonlagić, Jasna, Marinković, Aleksandar D., "Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances" in Macromolecular Materials and Engineering, 303, no. 8 (2018),
https://doi.org/10.1002/mame.201700648 . .

TY  - JOUR
AU  - Milojević-Rakić, M.
AU  - Dondur, Vera
AU  - Damjanović-Vasilić, Ljiljana
AU  - Rac, Vladislav
AU  - Rakić, Vesna
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4737
AB  - The competitive adsorption of aromatic hydrocarbons (benzene, methyl- and ethyl-benzene) and water on FeZSM-5 zeolites have been investigated by means of temperature-programmed desorption coupled with mass spectrometry (TPD/MS). The incorporation of iron in zeolite was done by aqueous ion exchange using dilute solutions of Fe complexes (ferric citrate and ferrous oxalate) and ferric nitrate. Diffuse reflectance UV-Vis spectroscopy and temperature-programmed reduction (TPR) were applied to characterize active sites on investigated zeolites. The existence of different iron species on FeZSM-5 zeolites was revealed. It has been demonstrated that the activity of the Fe exchanged zeolite depends on the iron salt used for ion exchange. The isolated, dispersed ions, which are often considered to be essential for adsorption and catalysis, were obtained with high yield only by ion exchange in the presence of ferrous oxalate. TPD/MS measurements show that aromatic hydrocarbons adsorb on specific, strong active sites in hydrated zeolites. The binding occurred when organic molecules replace water previously adsorbed at the same sites. Benzene showed non-dissociative adsorption/desorption, while new mass fragments were recorded during methyl-benzene and ethyl-benzene desorption implying their dissociative adsorption/desorption on active sites in hydrated zeolites.
PB  - Springer, Dordrecht
T2  - Reaction Kinetics Mechanisms and Catalysis
T1  - The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite
EP  - 246
IS  - 1
SP  - 231
VL  - 123
DO  - 10.1007/s11144-017-1275-y
ER  - 

@article{
author = "Milojević-Rakić, M. and Dondur, Vera and Damjanović-Vasilić, Ljiljana and Rac, Vladislav and Rakić, Vesna",
year = "2018",
abstract = "The competitive adsorption of aromatic hydrocarbons (benzene, methyl- and ethyl-benzene) and water on FeZSM-5 zeolites have been investigated by means of temperature-programmed desorption coupled with mass spectrometry (TPD/MS). The incorporation of iron in zeolite was done by aqueous ion exchange using dilute solutions of Fe complexes (ferric citrate and ferrous oxalate) and ferric nitrate. Diffuse reflectance UV-Vis spectroscopy and temperature-programmed reduction (TPR) were applied to characterize active sites on investigated zeolites. The existence of different iron species on FeZSM-5 zeolites was revealed. It has been demonstrated that the activity of the Fe exchanged zeolite depends on the iron salt used for ion exchange. The isolated, dispersed ions, which are often considered to be essential for adsorption and catalysis, were obtained with high yield only by ion exchange in the presence of ferrous oxalate. TPD/MS measurements show that aromatic hydrocarbons adsorb on specific, strong active sites in hydrated zeolites. The binding occurred when organic molecules replace water previously adsorbed at the same sites. Benzene showed non-dissociative adsorption/desorption, while new mass fragments were recorded during methyl-benzene and ethyl-benzene desorption implying their dissociative adsorption/desorption on active sites in hydrated zeolites.",
publisher = "Springer, Dordrecht",
journal = "Reaction Kinetics Mechanisms and Catalysis",
title = "The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite",
pages = "246-231",
number = "1",
volume = "123",
doi = "10.1007/s11144-017-1275-y"
}

Milojević-Rakić, M., Dondur, V., Damjanović-Vasilić, L., Rac, V.,& Rakić, V.. (2018). The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite. in Reaction Kinetics Mechanisms and Catalysis
Springer, Dordrecht., 123(1), 231-246.
https://doi.org/10.1007/s11144-017-1275-y

Milojević-Rakić M, Dondur V, Damjanović-Vasilić L, Rac V, Rakić V. The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite. in Reaction Kinetics Mechanisms and Catalysis. 2018;123(1):231-246.
doi:10.1007/s11144-017-1275-y .

Milojević-Rakić, M., Dondur, Vera, Damjanović-Vasilić, Ljiljana, Rac, Vladislav, Rakić, Vesna, "The accessibility of sites active in the dissociative adsorption of aromatic hydrocarbons in FeZSM-5 zeolite" in Reaction Kinetics Mechanisms and Catalysis, 123, no. 1 (2018):231-246,
https://doi.org/10.1007/s11144-017-1275-y . .

TY  - JOUR
AU  - Rusmirović, Jelena D.
AU  - Ivanović, Jasna Z.
AU  - Pavlović, Vladimir
AU  - Rakić, Vesna
AU  - Rancić, Milica P.
AU  - Djokić, Veljko
AU  - Marinković, Aleksandar D.
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4380
AB  - The influence of modification and vacuum/supercritical CO2 (scCO(2)) drying methods on the surface properties, morphology and thermal stability of cellulose nanocrystals (NC) was presented in this study. Introduction of reactive vinyl groups on NC surface was performed by either direct esterification with oleic acid, linseed or sunflower oil fatty acids; or by amidation of maleic acid/ethylene diamine with methyl ester of fatty acid. Obtained modified NC (m-NC) were characterized using MR and Raman spectroscopy; and by determination of acid, iodine and ester values. Structural analysis of m-NC showed varieties of forms, from spongy to nanostructural non-uniform layered morphology with observable agglomeration, which confirmed morphology dependence on modification/processing methods Thermogravimetry-MS spectrometry showed different thermal stability and degradation pathways of NC/m-NC. Incorporation of 1 wt% of reactive m-NC in unsaturated polyester lead to high performance nanocomposites and contributed to increase of stress at break in the range from 76 to 93%.
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Polymers
T1  - Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites
EP  - 74
SP  - 64
VL  - 164
DO  - 10.1016/j.carbpol.2017.01.086
ER  - 

@article{
author = "Rusmirović, Jelena D. and Ivanović, Jasna Z. and Pavlović, Vladimir and Rakić, Vesna and Rancić, Milica P. and Djokić, Veljko and Marinković, Aleksandar D.",
year = "2017",
abstract = "The influence of modification and vacuum/supercritical CO2 (scCO(2)) drying methods on the surface properties, morphology and thermal stability of cellulose nanocrystals (NC) was presented in this study. Introduction of reactive vinyl groups on NC surface was performed by either direct esterification with oleic acid, linseed or sunflower oil fatty acids; or by amidation of maleic acid/ethylene diamine with methyl ester of fatty acid. Obtained modified NC (m-NC) were characterized using MR and Raman spectroscopy; and by determination of acid, iodine and ester values. Structural analysis of m-NC showed varieties of forms, from spongy to nanostructural non-uniform layered morphology with observable agglomeration, which confirmed morphology dependence on modification/processing methods Thermogravimetry-MS spectrometry showed different thermal stability and degradation pathways of NC/m-NC. Incorporation of 1 wt% of reactive m-NC in unsaturated polyester lead to high performance nanocomposites and contributed to increase of stress at break in the range from 76 to 93%.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Polymers",
title = "Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites",
pages = "74-64",
volume = "164",
doi = "10.1016/j.carbpol.2017.01.086"
}

Rusmirović, J. D., Ivanović, J. Z., Pavlović, V., Rakić, V., Rancić, M. P., Djokić, V.,& Marinković, A. D.. (2017). Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites. in Carbohydrate Polymers
Elsevier Sci Ltd, Oxford., 164, 64-74.
https://doi.org/10.1016/j.carbpol.2017.01.086

Rusmirović JD, Ivanović JZ, Pavlović V, Rakić V, Rancić MP, Djokić V, Marinković AD. Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites. in Carbohydrate Polymers. 2017;164:64-74.
doi:10.1016/j.carbpol.2017.01.086 .

Rusmirović, Jelena D., Ivanović, Jasna Z., Pavlović, Vladimir, Rakić, Vesna, Rancić, Milica P., Djokić, Veljko, Marinković, Aleksandar D., "Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites" in Carbohydrate Polymers, 164 (2017):64-74,
https://doi.org/10.1016/j.carbpol.2017.01.086 . .

TY  - CONF
AU  - Malicanin, Marko
AU  - Rac, Vladislav
AU  - Rakić, Vesna
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4425
AB  - Keeping of red wine in bottles is very important for its maturation and quality. However, there are numerous changes that happen during that period, usually caused by oxidative processes and changes in structure and content of polyphenolic compounds. The goal of this study was to determine the effects of Inactivated dry yeast (IDY) products on aging, phenolics content, colour stability and sensory characteristics of red wine Prokupac (Serbian autochthonous variety). The treatment of wine was done by 3 different IDYP (Lallemand, Canada): Optimum White, Opti Less and Noblesse, applied as 0.2 g/L and 0.4 g/L during 15 days. Subsequently, wine clarification was done, followed by filtration and bottling. Untreated wines were used for comparison. Wine was subjected to accelerated aging (10 days at 55 degrees C) and also to normal aging conditions during one year. To determine the influence of IDYP following parameters were monitored: dissolved O-2, free and total SO2, sugar free extract, content of total phenolics, flavonoids, flavan-3-ols and anthocyanins, percent of polymeric color, color tint, color intensity and sensory characteristics (Panel method). The obtained results clearly show that IDY products are good scavengers of oxygen and have a positive impact on wine quality preservation and its organoleptic characteristics. However, a slight decrease of polyphenols content was detected.
PB  - E D P Sciences, Cedex A
C3  - 40th World Congress of Vine and Wine
T1  - The effect of inactivated yeast-based products on the process of wine aging, phenolic compounds and sensory characteristics of red wine Prokupac
VL  - 9
DO  - 10.1051/bioconf/20170902004
ER  - 

@conference{
author = "Malicanin, Marko and Rac, Vladislav and Rakić, Vesna",
year = "2017",
abstract = "Keeping of red wine in bottles is very important for its maturation and quality. However, there are numerous changes that happen during that period, usually caused by oxidative processes and changes in structure and content of polyphenolic compounds. The goal of this study was to determine the effects of Inactivated dry yeast (IDY) products on aging, phenolics content, colour stability and sensory characteristics of red wine Prokupac (Serbian autochthonous variety). The treatment of wine was done by 3 different IDYP (Lallemand, Canada): Optimum White, Opti Less and Noblesse, applied as 0.2 g/L and 0.4 g/L during 15 days. Subsequently, wine clarification was done, followed by filtration and bottling. Untreated wines were used for comparison. Wine was subjected to accelerated aging (10 days at 55 degrees C) and also to normal aging conditions during one year. To determine the influence of IDYP following parameters were monitored: dissolved O-2, free and total SO2, sugar free extract, content of total phenolics, flavonoids, flavan-3-ols and anthocyanins, percent of polymeric color, color tint, color intensity and sensory characteristics (Panel method). The obtained results clearly show that IDY products are good scavengers of oxygen and have a positive impact on wine quality preservation and its organoleptic characteristics. However, a slight decrease of polyphenols content was detected.",
publisher = "E D P Sciences, Cedex A",
journal = "40th World Congress of Vine and Wine",
title = "The effect of inactivated yeast-based products on the process of wine aging, phenolic compounds and sensory characteristics of red wine Prokupac",
volume = "9",
doi = "10.1051/bioconf/20170902004"
}

Malicanin, M., Rac, V.,& Rakić, V.. (2017). The effect of inactivated yeast-based products on the process of wine aging, phenolic compounds and sensory characteristics of red wine Prokupac. in 40th World Congress of Vine and Wine
E D P Sciences, Cedex A., 9.
https://doi.org/10.1051/bioconf/20170902004

Malicanin M, Rac V, Rakić V. The effect of inactivated yeast-based products on the process of wine aging, phenolic compounds and sensory characteristics of red wine Prokupac. in 40th World Congress of Vine and Wine. 2017;9.
doi:10.1051/bioconf/20170902004 .

Malicanin, Marko, Rac, Vladislav, Rakić, Vesna, "The effect of inactivated yeast-based products on the process of wine aging, phenolic compounds and sensory characteristics of red wine Prokupac" in 40th World Congress of Vine and Wine, 9 (2017),
https://doi.org/10.1051/bioconf/20170902004 . .

TY  - JOUR
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Rusmirović, Jelena D.
AU  - Postole, Georgeta
AU  - Marinković, Aleksandar
AU  - Radić, Danka
AU  - Rakić, Vesna
AU  - Pavlović, Vladimir
AU  - Auroux, Aline
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4477
AB  - In this paper, synthesis of porous wollastonite-based ceramics was reported. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, yeast as a pore-forming agent was added to the as-obtained powders. Sintering regime was set up based on the results obtained by differential thermal analysis. Prepared mixture was pressed into pallets and sintered at 900 degrees C for 1 h. After the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by X-ray diffraction method and SEM. In a batch test, the influence of pH, contact time and initial ion concentration on adsorption efficiency of As+5, Cr+6, and phosphate ions on synthesized wollastonite-based ceramics were studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model that predicted intra-particle diffusion as a rate-controlling step of overall process. High adsorption capacities 39.97, 21.87, and 15.29 mgg(-1) were obtained for As+5, Cr+6, and phosphate ions, respectively.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent
EP  - 246
IS  - 3
SP  - 235
VL  - 49
DO  - 10.2298/SOS1703235O
ER  - 

@article{
author = "Obradović, Nina and Filipović, Suzana and Rusmirović, Jelena D. and Postole, Georgeta and Marinković, Aleksandar and Radić, Danka and Rakić, Vesna and Pavlović, Vladimir and Auroux, Aline",
year = "2017",
abstract = "In this paper, synthesis of porous wollastonite-based ceramics was reported. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, yeast as a pore-forming agent was added to the as-obtained powders. Sintering regime was set up based on the results obtained by differential thermal analysis. Prepared mixture was pressed into pallets and sintered at 900 degrees C for 1 h. After the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by X-ray diffraction method and SEM. In a batch test, the influence of pH, contact time and initial ion concentration on adsorption efficiency of As+5, Cr+6, and phosphate ions on synthesized wollastonite-based ceramics were studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model that predicted intra-particle diffusion as a rate-controlling step of overall process. High adsorption capacities 39.97, 21.87, and 15.29 mgg(-1) were obtained for As+5, Cr+6, and phosphate ions, respectively.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent",
pages = "246-235",
number = "3",
volume = "49",
doi = "10.2298/SOS1703235O"
}

Obradović, N., Filipović, S., Rusmirović, J. D., Postole, G., Marinković, A., Radić, D., Rakić, V., Pavlović, V.,& Auroux, A.. (2017). Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 49(3), 235-246.
https://doi.org/10.2298/SOS1703235O

Obradović N, Filipović S, Rusmirović JD, Postole G, Marinković A, Radić D, Rakić V, Pavlović V, Auroux A. Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent. in Science of Sintering. 2017;49(3):235-246.
doi:10.2298/SOS1703235O .

Obradović, Nina, Filipović, Suzana, Rusmirović, Jelena D., Postole, Georgeta, Marinković, Aleksandar, Radić, Danka, Rakić, Vesna, Pavlović, Vladimir, Auroux, Aline, "Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent" in Science of Sintering, 49, no. 3 (2017):235-246,
https://doi.org/10.2298/SOS1703235O . .

TY  - JOUR
AU  - Rac, Vladislav
AU  - Rakić, Vesna
AU  - Damjanović-Vasilić, Ljiljana
AU  - Dondur, Vera
AU  - Auroux, Aline
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4487
AB  - Room temperature adsorption of CO and N2O using isothermal calorimetry and in situ FTIR spectroscopy on bimetallic and monometallic forms of Cu, Fe and Mn exchanged zeolite ZSM-5 was studied. The two complementary techniques allowed the assessment of the strengths of interactions as well as the identification of the cations active in adsorption. In bimetallic samples containing Cu, a synergistic effect was observed for CO adsorption, i.e higher strengths of adsorption were detected than for corresponding monometallic samples. Such an effect was not detected for N2O. Furthermore, FTIR measurements revealed that N2O adsorption was somewhat restricted for the cation which was introduced the first in bimetallic samples. These findings imply the importance of the order of cation introduction and the procedure of ion exchange process for the adsorptive properties of bimetallic ZSM-5 and, consequently, catalytic reactions where adsorption of N2O is an important reaction step.
PB  - Elsevier, Amsterdam
T2  - Applied Surface Science
T1  - Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study
EP  - 1140
SP  - 1134
VL  - 423
DO  - 10.1016/j.apsusc.2017.06.269
ER  - 

@article{
author = "Rac, Vladislav and Rakić, Vesna and Damjanović-Vasilić, Ljiljana and Dondur, Vera and Auroux, Aline",
year = "2017",
abstract = "Room temperature adsorption of CO and N2O using isothermal calorimetry and in situ FTIR spectroscopy on bimetallic and monometallic forms of Cu, Fe and Mn exchanged zeolite ZSM-5 was studied. The two complementary techniques allowed the assessment of the strengths of interactions as well as the identification of the cations active in adsorption. In bimetallic samples containing Cu, a synergistic effect was observed for CO adsorption, i.e higher strengths of adsorption were detected than for corresponding monometallic samples. Such an effect was not detected for N2O. Furthermore, FTIR measurements revealed that N2O adsorption was somewhat restricted for the cation which was introduced the first in bimetallic samples. These findings imply the importance of the order of cation introduction and the procedure of ion exchange process for the adsorptive properties of bimetallic ZSM-5 and, consequently, catalytic reactions where adsorption of N2O is an important reaction step.",
publisher = "Elsevier, Amsterdam",
journal = "Applied Surface Science",
title = "Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study",
pages = "1140-1134",
volume = "423",
doi = "10.1016/j.apsusc.2017.06.269"
}

Rac, V., Rakić, V., Damjanović-Vasilić, L., Dondur, V.,& Auroux, A.. (2017). Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study. in Applied Surface Science
Elsevier, Amsterdam., 423, 1134-1140.
https://doi.org/10.1016/j.apsusc.2017.06.269

Rac V, Rakić V, Damjanović-Vasilić L, Dondur V, Auroux A. Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study. in Applied Surface Science. 2017;423:1134-1140.
doi:10.1016/j.apsusc.2017.06.269 .

Rac, Vladislav, Rakić, Vesna, Damjanović-Vasilić, Ljiljana, Dondur, Vera, Auroux, Aline, "Complementary approach to the adsorption of CO and N2O on bimetallic ion exchanged ZMS-5 zeolite: Microcalorimetric and FTIR spectroscopy study" in Applied Surface Science, 423 (2017):1134-1140,
https://doi.org/10.1016/j.apsusc.2017.06.269 . .

TY  - JOUR
AU  - Balanc, Bojana
AU  - Kalušević, Ana
AU  - Drvenica, Ivana
AU  - Coelho, Maria Teresa
AU  - Djordjević, Verica
AU  - Alves, Vitor D.
AU  - Sousa, Isabel
AU  - Moldao-Martins, Margarida
AU  - Rakić, Vesna
AU  - Nedović, Viktor
AU  - Bugarski, Branko
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4139
AB  - Carqueja (Pterospartum tridentatum) is an endemic species and various bioactive compounds have been identified in its aqueous extract. The aim of this study was to protect the natural antioxidants from the aqueous extract of carqueja by encapsulation in Ca-alginate microbeads and Ca-alginate microbeads containing 10% and 20% (w/v) of inulin. The microbeads produced by electrostatic extrusion technique had an average diameter from 625 mu m to 830 mu m depending on the portion of inulin. The sphericity factor of the hydrogel microbeads had values between 0.014 and 0.026, while freeze dried microbeads had irregular shape, especially those with no excipient. The reduction in microbeads size after freeze drying process (expressed as shrinkage factor) ranged from 0.338 (alginate microbeads with 20% (w/v) of inulin) to 0.523 (plain alginate microbeads). The expressed radical scavenging activity against ABTS and DPPH radicals was found to be between 30% and 40% for encapsulated extract, while the fresh extract showed around 47% and 57% of radical scavenging activity for ABTS and DPPH radicals, respectively. The correlation between antioxidant activity and the total phenolic content were found to be positive (in both assay methods, DPPH and ABTS), which indicate that the addition of inulin didn't have influence on antioxidant activity. The presence of inulin reduced stiffness of the hydrogel, and protected bead structure from collapse upon freeze-drying. Alginate-inulin beads are envisaged to be used for delivery of aqueous P. tridentatum extract in functional food products.
PB  - Wiley, Hoboken
T2  - Journal of Food Science
T1  - Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract
EP  - E75
IS  - 1
SP  - E65
VL  - 81
DO  - 10.1111/1750-3841.13167
ER  - 

@article{
author = "Balanc, Bojana and Kalušević, Ana and Drvenica, Ivana and Coelho, Maria Teresa and Djordjević, Verica and Alves, Vitor D. and Sousa, Isabel and Moldao-Martins, Margarida and Rakić, Vesna and Nedović, Viktor and Bugarski, Branko",
year = "2016",
abstract = "Carqueja (Pterospartum tridentatum) is an endemic species and various bioactive compounds have been identified in its aqueous extract. The aim of this study was to protect the natural antioxidants from the aqueous extract of carqueja by encapsulation in Ca-alginate microbeads and Ca-alginate microbeads containing 10% and 20% (w/v) of inulin. The microbeads produced by electrostatic extrusion technique had an average diameter from 625 mu m to 830 mu m depending on the portion of inulin. The sphericity factor of the hydrogel microbeads had values between 0.014 and 0.026, while freeze dried microbeads had irregular shape, especially those with no excipient. The reduction in microbeads size after freeze drying process (expressed as shrinkage factor) ranged from 0.338 (alginate microbeads with 20% (w/v) of inulin) to 0.523 (plain alginate microbeads). The expressed radical scavenging activity against ABTS and DPPH radicals was found to be between 30% and 40% for encapsulated extract, while the fresh extract showed around 47% and 57% of radical scavenging activity for ABTS and DPPH radicals, respectively. The correlation between antioxidant activity and the total phenolic content were found to be positive (in both assay methods, DPPH and ABTS), which indicate that the addition of inulin didn't have influence on antioxidant activity. The presence of inulin reduced stiffness of the hydrogel, and protected bead structure from collapse upon freeze-drying. Alginate-inulin beads are envisaged to be used for delivery of aqueous P. tridentatum extract in functional food products.",
publisher = "Wiley, Hoboken",
journal = "Journal of Food Science",
title = "Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract",
pages = "E75-E65",
number = "1",
volume = "81",
doi = "10.1111/1750-3841.13167"
}

Balanc, B., Kalušević, A., Drvenica, I., Coelho, M. T., Djordjević, V., Alves, V. D., Sousa, I., Moldao-Martins, M., Rakić, V., Nedović, V.,& Bugarski, B.. (2016). Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract. in Journal of Food Science
Wiley, Hoboken., 81(1), E65-E75.
https://doi.org/10.1111/1750-3841.13167

Balanc B, Kalušević A, Drvenica I, Coelho MT, Djordjević V, Alves VD, Sousa I, Moldao-Martins M, Rakić V, Nedović V, Bugarski B. Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract. in Journal of Food Science. 2016;81(1):E65-E75.
doi:10.1111/1750-3841.13167 .

Balanc, Bojana, Kalušević, Ana, Drvenica, Ivana, Coelho, Maria Teresa, Djordjević, Verica, Alves, Vitor D., Sousa, Isabel, Moldao-Martins, Margarida, Rakić, Vesna, Nedović, Viktor, Bugarski, Branko, "Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract" in Journal of Food Science, 81, no. 1 (2016):E65-E75,
https://doi.org/10.1111/1750-3841.13167 . .

TY  - JOUR
AU  - Lević, Steva
AU  - Pajić-Lijaković, Ivana
AU  - Djordjević, Verica
AU  - Rac, Vladislav
AU  - Rakić, Vesna
AU  - Šolević-Knudsen, Tatjana
AU  - Pavlović, Vladimir
AU  - Bugarski, Branko
AU  - Nedović, Viktor
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3777
AB  - In this study, calcium alginate beads immobilizing D-limonene (solid systems) have been manufactured starting from emulsions of this flavor in sodium alginate (liquid systems). The effects of alginate concentration (0.02 and 0.03 g/mL) and flavor content (5 and 10 % w/w) on viscosity, conductivity and stability of emulsions were investigated. The flavor droplets in emulsions are bigger as polymer solution is more concentrated and contains more of the flavor. When emulsions have been subjected to electrostatic extrusion and upon Na+-Ca2+ ion exchange, smaller (similar to 960 to similar to 1450 mm) and less spherical beads were obtained (sphericity factor 0.003-0.21) compared to beads produced by simple dripping technique (without electrostatic field). When wet beads were air dried, they shrunk less if they had higher content of the flavor. Novel mathematical model describing swelling kinetics of dried beads is developed. In this work, D-limonene was efficiently immobilized within Ca-alginate beads (immobilization efficiency similar to 50 to similar to 77%) and its thermal stability was confirmed by TG/MS analysis.
PB  - Elsevier Sci Ltd, Oxford
T2  - Food Hydrocolloids
T1  - Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion
EP  - 123
SP  - 111
VL  - 45
DO  - 10.1016/j.foodhyd.2014.10.001
ER  - 

@article{
author = "Lević, Steva and Pajić-Lijaković, Ivana and Djordjević, Verica and Rac, Vladislav and Rakić, Vesna and Šolević-Knudsen, Tatjana and Pavlović, Vladimir and Bugarski, Branko and Nedović, Viktor",
year = "2015",
abstract = "In this study, calcium alginate beads immobilizing D-limonene (solid systems) have been manufactured starting from emulsions of this flavor in sodium alginate (liquid systems). The effects of alginate concentration (0.02 and 0.03 g/mL) and flavor content (5 and 10 % w/w) on viscosity, conductivity and stability of emulsions were investigated. The flavor droplets in emulsions are bigger as polymer solution is more concentrated and contains more of the flavor. When emulsions have been subjected to electrostatic extrusion and upon Na+-Ca2+ ion exchange, smaller (similar to 960 to similar to 1450 mm) and less spherical beads were obtained (sphericity factor 0.003-0.21) compared to beads produced by simple dripping technique (without electrostatic field). When wet beads were air dried, they shrunk less if they had higher content of the flavor. Novel mathematical model describing swelling kinetics of dried beads is developed. In this work, D-limonene was efficiently immobilized within Ca-alginate beads (immobilization efficiency similar to 50 to similar to 77%) and its thermal stability was confirmed by TG/MS analysis.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Food Hydrocolloids",
title = "Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion",
pages = "123-111",
volume = "45",
doi = "10.1016/j.foodhyd.2014.10.001"
}

Lević, S., Pajić-Lijaković, I., Djordjević, V., Rac, V., Rakić, V., Šolević-Knudsen, T., Pavlović, V., Bugarski, B.,& Nedović, V.. (2015). Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion. in Food Hydrocolloids
Elsevier Sci Ltd, Oxford., 45, 111-123.
https://doi.org/10.1016/j.foodhyd.2014.10.001

Lević S, Pajić-Lijaković I, Djordjević V, Rac V, Rakić V, Šolević-Knudsen T, Pavlović V, Bugarski B, Nedović V. Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion. in Food Hydrocolloids. 2015;45:111-123.
doi:10.1016/j.foodhyd.2014.10.001 .

Lević, Steva, Pajić-Lijaković, Ivana, Djordjević, Verica, Rac, Vladislav, Rakić, Vesna, Šolević-Knudsen, Tatjana, Pavlović, Vladimir, Bugarski, Branko, Nedović, Viktor, "Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion" in Food Hydrocolloids, 45 (2015):111-123,
https://doi.org/10.1016/j.foodhyd.2014.10.001 . .

TY  - JOUR
AU  - Simić, Aleksandar
AU  - Živanović, Iva
AU  - Rajić, Nevenka
AU  - Milutinović, Ivan
AU  - Rakić, Vesna
AU  - Krogstad, Tore
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3975
AB  - The zeolitic tuff (Zlatokop deposit, Vranjska Banja, Serbia) containing 70% of clinoptilolite was used as a manure additive in this work. Clinoptilolite as a binding agent can be “carrier” of ammonia ion. In the present study, cattle manure enriched with clinoptilolite was applied as an organomineral fertilizer. The experiment was carried out on a natural pasture in period 2012-14 in Western Serbia. It included five different treatments: a) control without fertilizer; b) pure fermented cattle manure (30 t ha-1); c) organomineral fertilizer (30 t ha-1 cattle manure +10 wt.% zeolite); d) pure zeolite (3 t ha-1); and e) nitrogen application by mineral fertilizer, 50 kg ha-1 N in the first year and 30 kg ha-1 N in the second year. The fertilizers were applied in autumn, except mineral fertilizer which was applied in spring. The dry matter (DM) contents and the botanical compositions of forage were estimated for two years. Treatments with manure, organomineral fertilizer and mineral N application gave higher DM yield compared to control plots, and changes have been reflected on pasture composition, which affected forage quality.
AB  - U radu je korišćen prirodni zeolitski tuf (sa kopa Zlatokop, Vranjska Banja, koji sadrži 70% zeolita klinoptilolita) kao dodatak svežem stajnjaku. Klinoptilolit se zbog velikog afiniteta za vezivanje amonijaka može koristiti kao njegov “nosač”. Po dodavanju zeolitskog tufa svežem stajnjaku i posle fermentacije (zrenja) ovog kompleksa dobijeno je organomineralno đubrivo koje je tokom ispitivanja (2012-2014) primenjivano na pašnjaku u zapadnoj Srbiji. Primenjeno je 5 tretmana: kontrola bez đubrenja, zeolit u količini 3 t ha-1, zreo stajnjak u kolicini od 30 t ha-1 i zreo stajnjak izmešan sa zeolitom u kolicini 30 t ha- !+10% zeolit, kao i mineralno azotno đubrivo KAN u količini od 50 kg N ha-1 prve godine i 30 kg N ha-1 druge godine. Đubrenje je obavljeno u jesen, a prihrana mineralnim đubrivom u proleće. Praćen je prinos i botanički sastav naredne dve vegatacione sezone. Prinos krme je rastao u odnosu na kontrolu pri đubrenju stajnjakom, stajnjakom sa zeolitom i KAN-om; a promene su se odrazile i na botanički sastav pašnjaka, što je uticalo na kvalitet dobijene krme.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production
T1  - Primena organomineralnih đubriva sa dodatim klinoptilolitom u proizvodnji kabaste stočne hrane
EP  - 131
IS  - 1-2
SP  - 125
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3975
ER  - 

@article{
author = "Simić, Aleksandar and Živanović, Iva and Rajić, Nevenka and Milutinović, Ivan and Rakić, Vesna and Krogstad, Tore",
year = "2015",
abstract = "The zeolitic tuff (Zlatokop deposit, Vranjska Banja, Serbia) containing 70% of clinoptilolite was used as a manure additive in this work. Clinoptilolite as a binding agent can be “carrier” of ammonia ion. In the present study, cattle manure enriched with clinoptilolite was applied as an organomineral fertilizer. The experiment was carried out on a natural pasture in period 2012-14 in Western Serbia. It included five different treatments: a) control without fertilizer; b) pure fermented cattle manure (30 t ha-1); c) organomineral fertilizer (30 t ha-1 cattle manure +10 wt.% zeolite); d) pure zeolite (3 t ha-1); and e) nitrogen application by mineral fertilizer, 50 kg ha-1 N in the first year and 30 kg ha-1 N in the second year. The fertilizers were applied in autumn, except mineral fertilizer which was applied in spring. The dry matter (DM) contents and the botanical compositions of forage were estimated for two years. Treatments with manure, organomineral fertilizer and mineral N application gave higher DM yield compared to control plots, and changes have been reflected on pasture composition, which affected forage quality., U radu je korišćen prirodni zeolitski tuf (sa kopa Zlatokop, Vranjska Banja, koji sadrži 70% zeolita klinoptilolita) kao dodatak svežem stajnjaku. Klinoptilolit se zbog velikog afiniteta za vezivanje amonijaka može koristiti kao njegov “nosač”. Po dodavanju zeolitskog tufa svežem stajnjaku i posle fermentacije (zrenja) ovog kompleksa dobijeno je organomineralno đubrivo koje je tokom ispitivanja (2012-2014) primenjivano na pašnjaku u zapadnoj Srbiji. Primenjeno je 5 tretmana: kontrola bez đubrenja, zeolit u količini 3 t ha-1, zreo stajnjak u kolicini od 30 t ha-1 i zreo stajnjak izmešan sa zeolitom u kolicini 30 t ha- !+10% zeolit, kao i mineralno azotno đubrivo KAN u količini od 50 kg N ha-1 prve godine i 30 kg N ha-1 druge godine. Đubrenje je obavljeno u jesen, a prihrana mineralnim đubrivom u proleće. Praćen je prinos i botanički sastav naredne dve vegatacione sezone. Prinos krme je rastao u odnosu na kontrolu pri đubrenju stajnjakom, stajnjakom sa zeolitom i KAN-om; a promene su se odrazile i na botanički sastav pašnjaka, što je uticalo na kvalitet dobijene krme.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production, Primena organomineralnih đubriva sa dodatim klinoptilolitom u proizvodnji kabaste stočne hrane",
pages = "131-125",
number = "1-2",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3975"
}

Simić, A., Živanović, I., Rajić, N., Milutinović, I., Rakić, V.,& Krogstad, T.. (2015). Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 21(1-2), 125-131.
https://hdl.handle.net/21.15107/rcub_agrospace_3975

Simić A, Živanović I, Rajić N, Milutinović I, Rakić V, Krogstad T. Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2015;21(1-2):125-131.
https://hdl.handle.net/21.15107/rcub_agrospace_3975 .

Simić, Aleksandar, Živanović, Iva, Rajić, Nevenka, Milutinović, Ivan, Rakić, Vesna, Krogstad, Tore, "Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production" in Zbornik naučnih radova Instituta PKB Agroekonomik, 21, no. 1-2 (2015):125-131,
https://hdl.handle.net/21.15107/rcub_agrospace_3975 .

TY  - JOUR
AU  - Rakić, Vesna
AU  - Simić, Aleksandar
AU  - Živanović, Iva
AU  - Rac, Vladislav
AU  - Rajić, Nevenka
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3987
AB  - Zeolites are natural microporous crystals that are formed by the elements from the earth’s core: silicon, aluminium and oxygen, Natural zeolite deposits were formed millions of years ago from volcanic ash, There are about 50 types of natural zeolites, Zeolites can be used for various applications in industry, agriculture, environment protection. Application of natural zeolites in agriculture is based on their ability to bind other substances through mechanisms of ion change or adsorption, The zeolites exhibit affinity for the binding (removal) of ammonia from aqueous solutions, This enables their use in agriculture and horticulture: zeolites are used as nitrogen fertilizers, since they can adsorb ammonium ions from manure, Their application in purification of wastewaters from agriculture is also possible, As soil additives, they can reduce the acceptance of mercury and other heavy metals by plants, thus preventing their entrance in the food chains, The most commonly used natural zeolite is clinoptilolite, due to its high dehydrating capacity, high adsorption and ion exchange capacities and catalytic activities. This paper presents a literature review on the use of natural zeolites in agriculture; with special emphasis on the application of clinoptilolite as adsorbent of ammonia and as a carrier of fertilizers of pastures and meadows.
AB  - Zeoliti su prirodni mikroporozni kristali koji se sastoje od elemenata iz Zemljine kore: silicijuma, aluminijuma i kiseonika. Prirodni zeolitski depoziti nastali su pre više miliona godina od vulkanskog pepela. Postoji oko 50 vrsta prirodnih zeolita. Zeoliti se koriste za različite primene: u industriji, poljoprivredi, zaštiti okoline. Primena prirodnih zeolita u poljoprivredi bazira se na njihovoj sposobnosti za vezivanje drugih susptanci mehanizmom jonske izmene ili adsorpcijom. Zeoliti pokazuju afinitet za vezivanje (uklanjanje) amonijaka iz vodenih rastvora. Ovo omogućava njihovu primenu u poljoprivredi i hortikulturi. Kako mogu da vrše adsorpciju amonijum jona iz stajnjaka zeoliti se u smesi sa stajnjakom mogu koristiti kao azotna organomineralna đubriva,. Takođe je moguća njihova primena u prečišćavanju otpadnih poljoprivrednih voda. Kao dodaci zemljištu, mogu da redukuju prihvatanje žive i ostalih teških metala od strane biljaka, i tako spreče njihov ulazak u lance ishrane. Najčešće korišćen prirodni zeolit je klinoptilolit, zbog svog visokog adsorpcionog kapaciteta, mogućnosti jonske izmene i primene kao katalizatora, kao i zbog visokog dehidratacionog kapaciteta. Ovaj rad donosi pregled literaturnih rezultata na temu korišćenja prirodnih zeolita u poljoprivredi; sa posebnim osvrtom na upotrebu klinoptilolita kao adsorbenta amonijaka i mogućnost njegovog korišćenja kao nosača za đubrenje livada i pašnjaka.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - The application of natural zeolites in agriculture
T1  - Upotreba iznačaj prirodnog zeolita u poljoprivredi
EP  - 183
IS  - 1-2
SP  - 173
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3987
ER  - 

@article{
author = "Rakić, Vesna and Simić, Aleksandar and Živanović, Iva and Rac, Vladislav and Rajić, Nevenka",
year = "2015",
abstract = "Zeolites are natural microporous crystals that are formed by the elements from the earth’s core: silicon, aluminium and oxygen, Natural zeolite deposits were formed millions of years ago from volcanic ash, There are about 50 types of natural zeolites, Zeolites can be used for various applications in industry, agriculture, environment protection. Application of natural zeolites in agriculture is based on their ability to bind other substances through mechanisms of ion change or adsorption, The zeolites exhibit affinity for the binding (removal) of ammonia from aqueous solutions, This enables their use in agriculture and horticulture: zeolites are used as nitrogen fertilizers, since they can adsorb ammonium ions from manure, Their application in purification of wastewaters from agriculture is also possible, As soil additives, they can reduce the acceptance of mercury and other heavy metals by plants, thus preventing their entrance in the food chains, The most commonly used natural zeolite is clinoptilolite, due to its high dehydrating capacity, high adsorption and ion exchange capacities and catalytic activities. This paper presents a literature review on the use of natural zeolites in agriculture; with special emphasis on the application of clinoptilolite as adsorbent of ammonia and as a carrier of fertilizers of pastures and meadows., Zeoliti su prirodni mikroporozni kristali koji se sastoje od elemenata iz Zemljine kore: silicijuma, aluminijuma i kiseonika. Prirodni zeolitski depoziti nastali su pre više miliona godina od vulkanskog pepela. Postoji oko 50 vrsta prirodnih zeolita. Zeoliti se koriste za različite primene: u industriji, poljoprivredi, zaštiti okoline. Primena prirodnih zeolita u poljoprivredi bazira se na njihovoj sposobnosti za vezivanje drugih susptanci mehanizmom jonske izmene ili adsorpcijom. Zeoliti pokazuju afinitet za vezivanje (uklanjanje) amonijaka iz vodenih rastvora. Ovo omogućava njihovu primenu u poljoprivredi i hortikulturi. Kako mogu da vrše adsorpciju amonijum jona iz stajnjaka zeoliti se u smesi sa stajnjakom mogu koristiti kao azotna organomineralna đubriva,. Takođe je moguća njihova primena u prečišćavanju otpadnih poljoprivrednih voda. Kao dodaci zemljištu, mogu da redukuju prihvatanje žive i ostalih teških metala od strane biljaka, i tako spreče njihov ulazak u lance ishrane. Najčešće korišćen prirodni zeolit je klinoptilolit, zbog svog visokog adsorpcionog kapaciteta, mogućnosti jonske izmene i primene kao katalizatora, kao i zbog visokog dehidratacionog kapaciteta. Ovaj rad donosi pregled literaturnih rezultata na temu korišćenja prirodnih zeolita u poljoprivredi; sa posebnim osvrtom na upotrebu klinoptilolita kao adsorbenta amonijaka i mogućnost njegovog korišćenja kao nosača za đubrenje livada i pašnjaka.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "The application of natural zeolites in agriculture, Upotreba iznačaj prirodnog zeolita u poljoprivredi",
pages = "183-173",
number = "1-2",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3987"
}

Rakić, V., Simić, A., Živanović, I., Rac, V.,& Rajić, N.. (2015). The application of natural zeolites in agriculture. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 21(1-2), 173-183.
https://hdl.handle.net/21.15107/rcub_agrospace_3987

Rakić V, Simić A, Živanović I, Rac V, Rajić N. The application of natural zeolites in agriculture. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2015;21(1-2):173-183.
https://hdl.handle.net/21.15107/rcub_agrospace_3987 .

Rakić, Vesna, Simić, Aleksandar, Živanović, Iva, Rac, Vladislav, Rajić, Nevenka, "The application of natural zeolites in agriculture" in Zbornik naučnih radova Instituta PKB Agroekonomik, 21, no. 1-2 (2015):173-183,
https://hdl.handle.net/21.15107/rcub_agrospace_3987 .