TY  - JOUR
AU  - Osmokrović, Andrea
AU  - Jancić, Ivan
AU  - Vunduk, Jovana
AU  - Petrović, Predrag
AU  - Milenković, Marina
AU  - Obradović, Bojana
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4785
AB  - New composites based on Ca-alginate hydrogels were produced that release activated charcoal (AC) particles with adsorbed povidone iodine (PVP-I) as a model antimicrobial substance in a physiological-like environment. Composite beads with different alginate (0.5-1.5% w/w) and AC (1-20% w/w) concentrations were analyzed by FE-SEM and characterized regarding textural parameters, swelling, and AC release kinetics. PVP-I was easily adsorbed onto AC particles within the optimized beads (0.5% w/w alginate, 20% w/w AC) as indicated by UV-vis spectroscopy, EDX and FT-IR analyses. The obtained beads have shown strong bactericidal effects against two standard bacterial strains (Staphylococcus aureus and Pseudomonas aeruginosa) and clinical multi-resistant wound isolates (MRSA, Escherichia coli, Pseudomonas aeruginosa, Enterococcus faecalis and Proteus mirabilis) and, at the same time, exhibited negligible PVP-I desorption in physiological saline solution. Thus, the obtained composites could provide utilization of potent antiseptics such as iodine, in wound dressings, without the concern of systemic absorption.
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Polymers
T1  - Achieving high antimicrobial activity: Composite alginate hydrogel beads releasing activated charcoal with an immobilized active agent
EP  - 288
SP  - 279
VL  - 196
DO  - 10.1016/j.carbpol.2018.05.045
ER  - 

@article{
author = "Osmokrović, Andrea and Jancić, Ivan and Vunduk, Jovana and Petrović, Predrag and Milenković, Marina and Obradović, Bojana",
year = "2018",
abstract = "New composites based on Ca-alginate hydrogels were produced that release activated charcoal (AC) particles with adsorbed povidone iodine (PVP-I) as a model antimicrobial substance in a physiological-like environment. Composite beads with different alginate (0.5-1.5% w/w) and AC (1-20% w/w) concentrations were analyzed by FE-SEM and characterized regarding textural parameters, swelling, and AC release kinetics. PVP-I was easily adsorbed onto AC particles within the optimized beads (0.5% w/w alginate, 20% w/w AC) as indicated by UV-vis spectroscopy, EDX and FT-IR analyses. The obtained beads have shown strong bactericidal effects against two standard bacterial strains (Staphylococcus aureus and Pseudomonas aeruginosa) and clinical multi-resistant wound isolates (MRSA, Escherichia coli, Pseudomonas aeruginosa, Enterococcus faecalis and Proteus mirabilis) and, at the same time, exhibited negligible PVP-I desorption in physiological saline solution. Thus, the obtained composites could provide utilization of potent antiseptics such as iodine, in wound dressings, without the concern of systemic absorption.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Polymers",
title = "Achieving high antimicrobial activity: Composite alginate hydrogel beads releasing activated charcoal with an immobilized active agent",
pages = "288-279",
volume = "196",
doi = "10.1016/j.carbpol.2018.05.045"
}

Osmokrović, A., Jancić, I., Vunduk, J., Petrović, P., Milenković, M.,& Obradović, B.. (2018). Achieving high antimicrobial activity: Composite alginate hydrogel beads releasing activated charcoal with an immobilized active agent. in Carbohydrate Polymers
Elsevier Sci Ltd, Oxford., 196, 279-288.
https://doi.org/10.1016/j.carbpol.2018.05.045

Osmokrović A, Jancić I, Vunduk J, Petrović P, Milenković M, Obradović B. Achieving high antimicrobial activity: Composite alginate hydrogel beads releasing activated charcoal with an immobilized active agent. in Carbohydrate Polymers. 2018;196:279-288.
doi:10.1016/j.carbpol.2018.05.045 .

Osmokrović, Andrea, Jancić, Ivan, Vunduk, Jovana, Petrović, Predrag, Milenković, Marina, Obradović, Bojana, "Achieving high antimicrobial activity: Composite alginate hydrogel beads releasing activated charcoal with an immobilized active agent" in Carbohydrate Polymers, 196 (2018):279-288,
https://doi.org/10.1016/j.carbpol.2018.05.045 . .

TY  - JOUR
AU  - Arsenijević, Jelena
AU  - Drobac, Milica
AU  - Šoštarić, Ivan
AU  - Razić, Slavica
AU  - Milenković, Marina
AU  - Couladis, Maria
AU  - Maksimović, Zoran
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4027
AB  - Hungarian thyme (Thymus pannonicus All., Lamiaceae) is an aromatic herb used as traditional remedy, a refreshing beverage and a food aromatizer. Herbal teas, i.e., infusions, of Hungarian thyme from eight localities in Serbia were analyzed regarding their polyphenolic and volatile composition, and tested for their antioxidant and antimicrobial activity. The total polyphenolics content, determined by the Folin-Ciocalteu method, ranged from 1122.25 to 1979.93 mg gallic acid/L. HPLC analysis revealed rosmarinic acid (367.42-1199.47 mg/L) and luteolin glucuronides as the main polyphenolics. The volatile fractions of the infusions, analyzed by static headspace extraction coupled with GC and GC-MS analyses, contained citral, 3-octanone, 1-octen-3-ol, linalool and 1,8-cineole as the dominant constituents. The antioxidant activity of the infusions was examined through the ferric reducing antioxidant power (FRAP) (68.09-124.58 mmol Fe2+/L) and the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical tests (SC50 1.32-2.96 mu L/mL). The antimicrobial activity was tested by the broth microdilution method against standard strains of Gram(+) Staphylococcus aureus, Staphylococcus epidermidis, Bacillus subtilis and Enterococcus faecalis and Gram(-) bacteria Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa, and one strain of yeast Candida albicans. The infusions inhibited microbial growth in the tested concentration range (31.25-500.00 mu L/mL) and the strongest activity was exhibited against the strain of C. albicans (MIC 31.25-62.50 mu L/mL). The antioxidant and antimicrobial properties of the infusions were, to some extent, in correlation with the composition and content of the polyphenolic compounds, whereas the volatiles noticeably influenced the exhibited antimicrobial activity.
PB  - Elsevier, Amsterdam
T2  - Industrial Crops and Products
T1  - Bioactivity of herbal tea of Hungarian thyme based on the composition of volatiles and polyphenolics
EP  - 20
SP  - 14
VL  - 89
DO  - 10.1016/j.indcrop.2016.04.046
ER  - 

@article{
author = "Arsenijević, Jelena and Drobac, Milica and Šoštarić, Ivan and Razić, Slavica and Milenković, Marina and Couladis, Maria and Maksimović, Zoran",
year = "2016",
abstract = "Hungarian thyme (Thymus pannonicus All., Lamiaceae) is an aromatic herb used as traditional remedy, a refreshing beverage and a food aromatizer. Herbal teas, i.e., infusions, of Hungarian thyme from eight localities in Serbia were analyzed regarding their polyphenolic and volatile composition, and tested for their antioxidant and antimicrobial activity. The total polyphenolics content, determined by the Folin-Ciocalteu method, ranged from 1122.25 to 1979.93 mg gallic acid/L. HPLC analysis revealed rosmarinic acid (367.42-1199.47 mg/L) and luteolin glucuronides as the main polyphenolics. The volatile fractions of the infusions, analyzed by static headspace extraction coupled with GC and GC-MS analyses, contained citral, 3-octanone, 1-octen-3-ol, linalool and 1,8-cineole as the dominant constituents. The antioxidant activity of the infusions was examined through the ferric reducing antioxidant power (FRAP) (68.09-124.58 mmol Fe2+/L) and the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical tests (SC50 1.32-2.96 mu L/mL). The antimicrobial activity was tested by the broth microdilution method against standard strains of Gram(+) Staphylococcus aureus, Staphylococcus epidermidis, Bacillus subtilis and Enterococcus faecalis and Gram(-) bacteria Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa, and one strain of yeast Candida albicans. The infusions inhibited microbial growth in the tested concentration range (31.25-500.00 mu L/mL) and the strongest activity was exhibited against the strain of C. albicans (MIC 31.25-62.50 mu L/mL). The antioxidant and antimicrobial properties of the infusions were, to some extent, in correlation with the composition and content of the polyphenolic compounds, whereas the volatiles noticeably influenced the exhibited antimicrobial activity.",
publisher = "Elsevier, Amsterdam",
journal = "Industrial Crops and Products",
title = "Bioactivity of herbal tea of Hungarian thyme based on the composition of volatiles and polyphenolics",
pages = "20-14",
volume = "89",
doi = "10.1016/j.indcrop.2016.04.046"
}

Arsenijević, J., Drobac, M., Šoštarić, I., Razić, S., Milenković, M., Couladis, M.,& Maksimović, Z.. (2016). Bioactivity of herbal tea of Hungarian thyme based on the composition of volatiles and polyphenolics. in Industrial Crops and Products
Elsevier, Amsterdam., 89, 14-20.
https://doi.org/10.1016/j.indcrop.2016.04.046

Arsenijević J, Drobac M, Šoštarić I, Razić S, Milenković M, Couladis M, Maksimović Z. Bioactivity of herbal tea of Hungarian thyme based on the composition of volatiles and polyphenolics. in Industrial Crops and Products. 2016;89:14-20.
doi:10.1016/j.indcrop.2016.04.046 .

Arsenijević, Jelena, Drobac, Milica, Šoštarić, Ivan, Razić, Slavica, Milenković, Marina, Couladis, Maria, Maksimović, Zoran, "Bioactivity of herbal tea of Hungarian thyme based on the composition of volatiles and polyphenolics" in Industrial Crops and Products, 89 (2016):14-20,
https://doi.org/10.1016/j.indcrop.2016.04.046 . .