Chitosan microbeads for encapsulation of thyme (Thymus serpyllum L.) polyphenols
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2014
Authors
Trifković, Kata
Milasinović, Nikola Z.
Djordjević, Verica B.
Kalagasidis-Krusić, Melina T.
Knežević-Jugović, Zorica
Nedović, Viktor

Bugarski, Branko

Article (Published version)

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In this work chitosan microbeads were prepared by emulsion technique and loaded with thyme polyphenols by diffusion from an external aqueous solution of Thymus serpyllum L. The effects of concentrations of chitosan (1.5-3% (w/v)) and GA (glutaraldehyde) (0.1-0.4% (v/v)), as a crosslinking agent on the main properties of microbeads were assessed. The obtained microgel beads from similar to 220 to similar to 790 mu m in diameter were exposed to controlled drying process at air (at 37 degrees C) after which they contracted to irregular shapes (similar to 70-230 mu m). The loading of dried microbeads with polyphenols was achieved by swelling in the acidic medium. The swelling rate of microbeads decreased with the increase in GA concentration. Upon this rehydration, thyme polypheriols were effectively encapsulated (active load of 66-114mg GAEg(beads)(-1)) and the microbeads recovered a spherical shape. Both, the increase in the amount of the crosslinking agent and the presence of polyphenol...s, contributed to a more pronounced surface roughness of microbeads. The release of encapsulated polyphenols in simulated gastrointestinal fluids was prolonged to 3 h.
Keywords:
Emulsion crosslinking technique / Chitosan microbeads / Polyphenols / MicroencapsulationSource:
Carbohydrate Polymers, 2014, 111, 901-907Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Novel encapsulation and enzyme technologies for designing of new biocatalysts and biologically active compounds targeting enhancement of food quality, safety and competitiveness (RS-46010)
- Synthesis and characterization of novel functional polymers and polymeric nanocomposites (RS-172062)
DOI: 10.1016/j.carbpol.2014.05.053
ISSN: 0144-8617
PubMed: 25037430
WoS: 000340302100109
Scopus: 2-s2.0-84902330332
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Poljoprivredni fakultetTY - JOUR AU - Trifković, Kata AU - Milasinović, Nikola Z. AU - Djordjević, Verica B. AU - Kalagasidis-Krusić, Melina T. AU - Knežević-Jugović, Zorica AU - Nedović, Viktor AU - Bugarski, Branko PY - 2014 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/3430 AB - In this work chitosan microbeads were prepared by emulsion technique and loaded with thyme polyphenols by diffusion from an external aqueous solution of Thymus serpyllum L. The effects of concentrations of chitosan (1.5-3% (w/v)) and GA (glutaraldehyde) (0.1-0.4% (v/v)), as a crosslinking agent on the main properties of microbeads were assessed. The obtained microgel beads from similar to 220 to similar to 790 mu m in diameter were exposed to controlled drying process at air (at 37 degrees C) after which they contracted to irregular shapes (similar to 70-230 mu m). The loading of dried microbeads with polyphenols was achieved by swelling in the acidic medium. The swelling rate of microbeads decreased with the increase in GA concentration. Upon this rehydration, thyme polypheriols were effectively encapsulated (active load of 66-114mg GAEg(beads)(-1)) and the microbeads recovered a spherical shape. Both, the increase in the amount of the crosslinking agent and the presence of polyphenols, contributed to a more pronounced surface roughness of microbeads. The release of encapsulated polyphenols in simulated gastrointestinal fluids was prolonged to 3 h. PB - Elsevier Sci Ltd, Oxford T2 - Carbohydrate Polymers T1 - Chitosan microbeads for encapsulation of thyme (Thymus serpyllum L.) polyphenols EP - 907 SP - 901 VL - 111 DO - 10.1016/j.carbpol.2014.05.053 ER -
@article{ author = "Trifković, Kata and Milasinović, Nikola Z. and Djordjević, Verica B. and Kalagasidis-Krusić, Melina T. and Knežević-Jugović, Zorica and Nedović, Viktor and Bugarski, Branko", year = "2014", abstract = "In this work chitosan microbeads were prepared by emulsion technique and loaded with thyme polyphenols by diffusion from an external aqueous solution of Thymus serpyllum L. The effects of concentrations of chitosan (1.5-3% (w/v)) and GA (glutaraldehyde) (0.1-0.4% (v/v)), as a crosslinking agent on the main properties of microbeads were assessed. The obtained microgel beads from similar to 220 to similar to 790 mu m in diameter were exposed to controlled drying process at air (at 37 degrees C) after which they contracted to irregular shapes (similar to 70-230 mu m). The loading of dried microbeads with polyphenols was achieved by swelling in the acidic medium. The swelling rate of microbeads decreased with the increase in GA concentration. Upon this rehydration, thyme polypheriols were effectively encapsulated (active load of 66-114mg GAEg(beads)(-1)) and the microbeads recovered a spherical shape. Both, the increase in the amount of the crosslinking agent and the presence of polyphenols, contributed to a more pronounced surface roughness of microbeads. The release of encapsulated polyphenols in simulated gastrointestinal fluids was prolonged to 3 h.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Carbohydrate Polymers", title = "Chitosan microbeads for encapsulation of thyme (Thymus serpyllum L.) polyphenols", pages = "907-901", volume = "111", doi = "10.1016/j.carbpol.2014.05.053" }
Trifković, K., Milasinović, N. Z., Djordjević, V. B., Kalagasidis-Krusić, M. T., Knežević-Jugović, Z., Nedović, V.,& Bugarski, B.. (2014). Chitosan microbeads for encapsulation of thyme (Thymus serpyllum L.) polyphenols. in Carbohydrate Polymers Elsevier Sci Ltd, Oxford., 111, 901-907. https://doi.org/10.1016/j.carbpol.2014.05.053
Trifković K, Milasinović NZ, Djordjević VB, Kalagasidis-Krusić MT, Knežević-Jugović Z, Nedović V, Bugarski B. Chitosan microbeads for encapsulation of thyme (Thymus serpyllum L.) polyphenols. in Carbohydrate Polymers. 2014;111:901-907. doi:10.1016/j.carbpol.2014.05.053 .
Trifković, Kata, Milasinović, Nikola Z., Djordjević, Verica B., Kalagasidis-Krusić, Melina T., Knežević-Jugović, Zorica, Nedović, Viktor, Bugarski, Branko, "Chitosan microbeads for encapsulation of thyme (Thymus serpyllum L.) polyphenols" in Carbohydrate Polymers, 111 (2014):901-907, https://doi.org/10.1016/j.carbpol.2014.05.053 . .