Functionalization of chitosan films using essential oils by supercritical CO2 impregnation method for various applications
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F24%3A10255511" target="_blank" >RIV/61989100:27640/24:10255511 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2666893924001397?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2666893924001397?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.carpta.2024.100559" target="_blank" >10.1016/j.carpta.2024.100559</a>
Alternative languages
Result language
angličtina
Original language name
Functionalization of chitosan films using essential oils by supercritical CO2 impregnation method for various applications
Original language description
Herein, chitosan films obtained by different approaches were functionalized with essential oils, i.e. mentha, clove, and cinnamon, by Supercritical Solvent Impregnation method to impart antioxidant and antimicrobial activity. The films were prepared from solutions with two different polymer concentrations (1 and 2.5 wt%) following three methodologies: casting and then drying at air (25 oC, 39 % relative humidity), casting and drying at 60 oC in humid conditions (82 % relativity humidity) and casting and water elimination by a freeze-drying process. The films were, then, characterized by scanning electron microscopy and X-ray diffraction, proving that the thickness, porosity, and crystallinity of the films are highly dependent on the preparation method. These structural variations affected the impregnation of essential oils by supercritical fluids, in terms of the amount and composition of the active compounds. Subsequently, yellowness, antioxidant and antimicrobial properties of the impregnated films were evaluated. The results demonstrated that the impregnated films retained high concentration of essential oils, especially the films impregnated with clove and produced by the freeze-drying process due to their higher porosity and lower crystallinity. These films also exhibited superior antimicrobial activity against Gram-positive and Gram-negative bacteria in comparison with the other two analyzed preparation methods. (C) 2024 The Author(s)
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10400 - Chemical sciences
Result continuities
Project
<a href="/en/project/EF19_073%2F0016945" target="_blank" >EF19_073/0016945: Doctoral grant competition VŠB - TU Ostrava</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Carbohydrate Polymer Technologies and Applications
ISSN
2666-8939
e-ISSN
2666-8939
Volume of the periodical
8
Issue of the periodical within the volume
december
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
10
Pages from-to
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UT code for WoS article
001315010600001
EID of the result in the Scopus database
2-s2.0-85203493196