Enhancement of water barrier and antimicrobial properties of chitosan/gelatin films by hydrophobic deep eutectic solvent
文献类型： 外文期刊
第一作者： Wen, Haitao
作者： Wen, Haitao;Liu, Zhongyi;Wen, Haitao;Tang, Daobang;Lin, Yaosheng;Zou, Jinhao;Zhou, Pengfei;Wang, Xuping
作者机构：
关键词： Chitosan; gelatin film; Hydrophobic deep eutectic solvent; Antimicrobial activity; Thymol; Food packaging
期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：11.2； 五年影响因子：10.2 ）
ISSN： 0144-8617
年卷期： 2023 年 303 卷
页码：
收录情况： SCI
摘要： Biodegradable chitosan/gelatin (CS/GEL) films have attracted attention as food packaging, but the poor water sensitivity and functional limitations of these films should be addressed. In this study, the hydrophobic deep eutectic solvent (DES, 0-15 %) consisting of thymol and octanoic acid was used to improve the water resistance and antibacterial performance of the CS/GEL composite films. FTIR and SEM analyses revealed a strong inter-action between the CS/GEL matrix and DES. The films blended with DES showed increased water contact angle values and thermal stability. Furthermore, the addition of DES resulted in a significant increase in the elasticity and decrease water vapor transmission rate (WVTR). The CS/GEL films blended with 9% DES showed a 38.5% decrease in WVTR compared to those without DES. Additionally, the DES-containing film displayed good anti-bacterial activity against Staphylococcus aureus and Escherichia coli. Overall, the CS/GEL-DES composite films are expected to contribute an improvement to food packaging.
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