TY  - JOUR
AU  - Cvetković, Stefana
AU  - Tenji, Dina
AU  - Mitić-Ćulafić, Dragana
AU  - Vuletić, Stefana
AU  - Ganić, Tea
AU  - Djekić, Ilija
AU  - Nikolić, Biljana
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6377
AB  - As a foodborne pathogen, Listeria monocytogenes could be commonly found in the food processing facilities, where forms biofilm on various food contact surfaces. Therefore, the control of L. monocytogenes biofilm formation is of key importance for improving food safety. The aim of this work was to examine the ability of yellow gentian root and leaf extracts to inhibit biofilm formation of L. monocytogenes strains at commonly used 37 °C and at ambient temperature associated with food processing plants (18 °C), on both polystyrene and stainless steel. Crystal violet staining assay revealed strong potential of the extracts to prevent biofilm formation on polystyrene at 37 °C (up to 90% inhibition), and on both surfaces at 18 °C (up to 78.1% and 62.9% on polystyrene and stainless steel, respectively). Antibiofilm effect could be ascribed to extracts’ ability to reduce the production of exopolysaccharides and to suppress swimming motility. Finally, qRT-PCR demonstrated no activity against quorum sensing, but up-regulation of the genes (flaA, sigB) involved in biofilm formation, most likely as a response to stressful conditions. Results obtained suggest yellow gentian extracts as potent antibiofilm agents, but further analyses are needed to determine the underlie mechanism and to validate the efficiency and safety in commercial environment. © 2023 Elsevier Ltd
T2  - Food Bioscience
T2  - Food Bioscience
T1  - Potential of yellow gentian aqueous-ethanolic extracts to prevent Listeria monocytogenes biofilm formation on selected food contact surfaces
VL  - 54
DO  - 10.1016/j.fbio.2023.102857
ER  - 

@article{
author = "Cvetković, Stefana and Tenji, Dina and Mitić-Ćulafić, Dragana and Vuletić, Stefana and Ganić, Tea and Djekić, Ilija and Nikolić, Biljana",
year = "2023",
abstract = "As a foodborne pathogen, Listeria monocytogenes could be commonly found in the food processing facilities, where forms biofilm on various food contact surfaces. Therefore, the control of L. monocytogenes biofilm formation is of key importance for improving food safety. The aim of this work was to examine the ability of yellow gentian root and leaf extracts to inhibit biofilm formation of L. monocytogenes strains at commonly used 37 °C and at ambient temperature associated with food processing plants (18 °C), on both polystyrene and stainless steel. Crystal violet staining assay revealed strong potential of the extracts to prevent biofilm formation on polystyrene at 37 °C (up to 90% inhibition), and on both surfaces at 18 °C (up to 78.1% and 62.9% on polystyrene and stainless steel, respectively). Antibiofilm effect could be ascribed to extracts’ ability to reduce the production of exopolysaccharides and to suppress swimming motility. Finally, qRT-PCR demonstrated no activity against quorum sensing, but up-regulation of the genes (flaA, sigB) involved in biofilm formation, most likely as a response to stressful conditions. Results obtained suggest yellow gentian extracts as potent antibiofilm agents, but further analyses are needed to determine the underlie mechanism and to validate the efficiency and safety in commercial environment. © 2023 Elsevier Ltd",
journal = "Food Bioscience, Food Bioscience",
title = "Potential of yellow gentian aqueous-ethanolic extracts to prevent Listeria monocytogenes biofilm formation on selected food contact surfaces",
volume = "54",
doi = "10.1016/j.fbio.2023.102857"
}

Cvetković, S., Tenji, D., Mitić-Ćulafić, D., Vuletić, S., Ganić, T., Djekić, I.,& Nikolić, B.. (2023). Potential of yellow gentian aqueous-ethanolic extracts to prevent Listeria monocytogenes biofilm formation on selected food contact surfaces. in Food Bioscience, 54.
https://doi.org/10.1016/j.fbio.2023.102857

Cvetković S, Tenji D, Mitić-Ćulafić D, Vuletić S, Ganić T, Djekić I, Nikolić B. Potential of yellow gentian aqueous-ethanolic extracts to prevent Listeria monocytogenes biofilm formation on selected food contact surfaces. in Food Bioscience. 2023;54.
doi:10.1016/j.fbio.2023.102857 .

Cvetković, Stefana, Tenji, Dina, Mitić-Ćulafić, Dragana, Vuletić, Stefana, Ganić, Tea, Djekić, Ilija, Nikolić, Biljana, "Potential of yellow gentian aqueous-ethanolic extracts to prevent Listeria monocytogenes biofilm formation on selected food contact surfaces" in Food Bioscience, 54 (2023),
https://doi.org/10.1016/j.fbio.2023.102857 . .

TY  - JOUR
AU  - Klaus, Anita
AU  - Wan‑Mohtar, Wan Abd Al Qadr Imad
AU  - Nikolić, Biljana
AU  - Cvetković, Stefana
AU  - Vunduk, Jovana
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5805
AB  - Four types of mycelial extracts were derived from the airlift liquid fermentation (ALF) of Pleurotus flabellatus, namely
exopolysaccharide (EX), endopolysaccharide (EN), hot water (WE), and hot alkali (AE) extracts. Such extracts were screened
for their active components and biological potential. EN proved to be most effective in inhibition of lipid peroxidation
(
EC50 = 1.71 ± 0.02 mg/mL) and in Cupric ion reducing antioxidant capacity (CUPRAC) assay (
EC50 = 2.91 ± 0.01 mg
TE/g). AE exhibited most pronounced ability to chelate ferrous ions (
EC50 = 4.96 ± 0.08 mg/mL) and to scavenge ABTS
radicals (
EC50 = 3.36 ± 0.03 mg TE/g). β-glucans and total phenols contributed most to the chelating ability and quenching
of ABTS radicals. Inhibition of lipid peroxidation correlated best with total glucans, total proteins, and β-glucans. Total
proteins contributed most to CUPRAC antioxidant capacity. Antifungal effect was determined against Candida albicans
ATCC 10231 (MIC: 0.019–0.625 mg/mL; MFC: 0.039–2.5 mg/mL), and towards C. albicans clinical isolate (MIC and MFC:
10.0–20.0 mg/mL). Comparison of cytotoxicity against colorectal carcinoma HCT 116 cells (
IC50: 1.8 ± 0.3–24.6 ± 4.2 mg/
mL) and normal lung MRC-5 fibroblasts (
IC50: 17.0 ± 4.2–42.1 ± 6.1 mg/mL) showed that EN, and especially AE possess
selective anticancer activity (SI values 3.41 and 9.44, respectively). Slight genotoxicity was observed only for AE and EX,
indicating the low risk concerning this feature. Notable antioxidative and anticandidal activities, selective cytotoxicity against
colorectal carcinoma cells, and absence/low genotoxicity pointed out that ALF—cultivated P. flabellatus mycelium could
be considered as a valuable source of bioactive substances.
PB  - Springer Science and Business Media B.V.
T2  - World Journal of Microbiology and Biotechnology
T1  - Pink oyster mushroom Pleurotus flabellatus mycelium produced by an airlift bioreactor—the evidence of potent in vitro biological activities
IS  - 1
SP  - 17
VL  - 37
DO  - 10.1007/s11274-020-02980-6
ER  - 

@article{
author = "Klaus, Anita and Wan‑Mohtar, Wan Abd Al Qadr Imad and Nikolić, Biljana and Cvetković, Stefana and Vunduk, Jovana",
year = "2021",
abstract = "Four types of mycelial extracts were derived from the airlift liquid fermentation (ALF) of Pleurotus flabellatus, namely
exopolysaccharide (EX), endopolysaccharide (EN), hot water (WE), and hot alkali (AE) extracts. Such extracts were screened
for their active components and biological potential. EN proved to be most effective in inhibition of lipid peroxidation
(
EC50 = 1.71 ± 0.02 mg/mL) and in Cupric ion reducing antioxidant capacity (CUPRAC) assay (
EC50 = 2.91 ± 0.01 mg
TE/g). AE exhibited most pronounced ability to chelate ferrous ions (
EC50 = 4.96 ± 0.08 mg/mL) and to scavenge ABTS
radicals (
EC50 = 3.36 ± 0.03 mg TE/g). β-glucans and total phenols contributed most to the chelating ability and quenching
of ABTS radicals. Inhibition of lipid peroxidation correlated best with total glucans, total proteins, and β-glucans. Total
proteins contributed most to CUPRAC antioxidant capacity. Antifungal effect was determined against Candida albicans
ATCC 10231 (MIC: 0.019–0.625 mg/mL; MFC: 0.039–2.5 mg/mL), and towards C. albicans clinical isolate (MIC and MFC:
10.0–20.0 mg/mL). Comparison of cytotoxicity against colorectal carcinoma HCT 116 cells (
IC50: 1.8 ± 0.3–24.6 ± 4.2 mg/
mL) and normal lung MRC-5 fibroblasts (
IC50: 17.0 ± 4.2–42.1 ± 6.1 mg/mL) showed that EN, and especially AE possess
selective anticancer activity (SI values 3.41 and 9.44, respectively). Slight genotoxicity was observed only for AE and EX,
indicating the low risk concerning this feature. Notable antioxidative and anticandidal activities, selective cytotoxicity against
colorectal carcinoma cells, and absence/low genotoxicity pointed out that ALF—cultivated P. flabellatus mycelium could
be considered as a valuable source of bioactive substances.",
publisher = "Springer Science and Business Media B.V.",
journal = "World Journal of Microbiology and Biotechnology",
title = "Pink oyster mushroom Pleurotus flabellatus mycelium produced by an airlift bioreactor—the evidence of potent in vitro biological activities",
number = "1",
pages = "17",
volume = "37",
doi = "10.1007/s11274-020-02980-6"
}

Klaus, A., Wan‑Mohtar, W. A. A. Q. I., Nikolić, B., Cvetković, S.,& Vunduk, J.. (2021). Pink oyster mushroom Pleurotus flabellatus mycelium produced by an airlift bioreactor—the evidence of potent in vitro biological activities. in World Journal of Microbiology and Biotechnology
Springer Science and Business Media B.V.., 37(1), 17.
https://doi.org/10.1007/s11274-020-02980-6

Klaus A, Wan‑Mohtar WAAQI, Nikolić B, Cvetković S, Vunduk J. Pink oyster mushroom Pleurotus flabellatus mycelium produced by an airlift bioreactor—the evidence of potent in vitro biological activities. in World Journal of Microbiology and Biotechnology. 2021;37(1):17.
doi:10.1007/s11274-020-02980-6 .

Klaus, Anita, Wan‑Mohtar, Wan Abd Al Qadr Imad, Nikolić, Biljana, Cvetković, Stefana, Vunduk, Jovana, "Pink oyster mushroom Pleurotus flabellatus mycelium produced by an airlift bioreactor—the evidence of potent in vitro biological activities" in World Journal of Microbiology and Biotechnology, 37, no. 1 (2021):17,
https://doi.org/10.1007/s11274-020-02980-6 . .

TY  - JOUR
AU  - Doroški, Ana
AU  - Klaus, Anita
AU  - Kozarski, Maja
AU  - Cvetković, Stefana
AU  - Nikolić, Biljana
AU  - Jakovljević, Dragica
AU  - Tomasevic, Igor
AU  - Vunduk, Jovana
AU  - Lazić, Vesna
AU  - Djekic, Ilija
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6506
AB  - Total quality index approach was used to reflect the quality of Pleurotus ostreatus
mushroom, cultivated on grape pomace (P) as food waste substrate and wheat straw
(S), in four different combined ratios: 100P; 80P20S; 50P50S; and 20P80S, with
100S, serving as control substrate. This approach involved two directions of mushroom
analysis. The whole mushroom fruiting bodies analysis introduced a single total
quality index (TQIM) based on 11 quality parameters. The mushroom water extracts
analysis was presented by another single total quality index (TQIE), with seven quality
parameters. This mathematical model revealed that the mushroom extracts have a
better overall quality score with higher pomace content in substrate mixture, compared
to the whole mushroom quality changes throughout the observed shelf life
period. Future research may pay attention to the phytotoxicity of grape pomace as a
food waste, as well as the influence of grape pomace on glucan content, as a healthbeneficial
compounds.
PB  - Wiley
T2  - Journal of Food Processing and Preservation
T1  - The influence of grape pomace substrate on quality characterization of Pleurotus ostreatus—Total quality index approach
VL  - 00:e15096
DO  - 10.1111/jfpp.15096
ER  - 

@article{
author = "Doroški, Ana and Klaus, Anita and Kozarski, Maja and Cvetković, Stefana and Nikolić, Biljana and Jakovljević, Dragica and Tomasevic, Igor and Vunduk, Jovana and Lazić, Vesna and Djekic, Ilija",
year = "2020",
abstract = "Total quality index approach was used to reflect the quality of Pleurotus ostreatus
mushroom, cultivated on grape pomace (P) as food waste substrate and wheat straw
(S), in four different combined ratios: 100P; 80P20S; 50P50S; and 20P80S, with
100S, serving as control substrate. This approach involved two directions of mushroom
analysis. The whole mushroom fruiting bodies analysis introduced a single total
quality index (TQIM) based on 11 quality parameters. The mushroom water extracts
analysis was presented by another single total quality index (TQIE), with seven quality
parameters. This mathematical model revealed that the mushroom extracts have a
better overall quality score with higher pomace content in substrate mixture, compared
to the whole mushroom quality changes throughout the observed shelf life
period. Future research may pay attention to the phytotoxicity of grape pomace as a
food waste, as well as the influence of grape pomace on glucan content, as a healthbeneficial
compounds.",
publisher = "Wiley",
journal = "Journal of Food Processing and Preservation",
title = "The influence of grape pomace substrate on quality characterization of Pleurotus ostreatus—Total quality index approach",
volume = "00:e15096",
doi = "10.1111/jfpp.15096"
}

Doroški, A., Klaus, A., Kozarski, M., Cvetković, S., Nikolić, B., Jakovljević, D., Tomasevic, I., Vunduk, J., Lazić, V.,& Djekic, I.. (2020). The influence of grape pomace substrate on quality characterization of Pleurotus ostreatus—Total quality index approach. in Journal of Food Processing and Preservation
Wiley., 00:e15096.
https://doi.org/10.1111/jfpp.15096

Doroški A, Klaus A, Kozarski M, Cvetković S, Nikolić B, Jakovljević D, Tomasevic I, Vunduk J, Lazić V, Djekic I. The influence of grape pomace substrate on quality characterization of Pleurotus ostreatus—Total quality index approach. in Journal of Food Processing and Preservation. 2020;00:e15096.
doi:10.1111/jfpp.15096 .

Doroški, Ana, Klaus, Anita, Kozarski, Maja, Cvetković, Stefana, Nikolić, Biljana, Jakovljević, Dragica, Tomasevic, Igor, Vunduk, Jovana, Lazić, Vesna, Djekic, Ilija, "The influence of grape pomace substrate on quality characterization of Pleurotus ostreatus—Total quality index approach" in Journal of Food Processing and Preservation, 00:e15096 (2020),
https://doi.org/10.1111/jfpp.15096 . .