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Enhancement of water barrier and antimicrobial properties of chitosan/gelatin films by hydrophobic deep eutectic solvent

文献类型: 外文期刊

作者: Wen, Haitao 1 ; Tang, Daobang 2 ; Lin, Yaosheng 2 ; Zou, Jinhao 2 ; Liu, Zhongyi 1 ; Zhou, Pengfei 2 ; Wang, Xuping 2 ;

作者机构: 1.Xiangtan Univ, Coll Chem Engn, Xiangtan 411105, Hunan, Peoples R China

2.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Key Lab Funct Foods, Guangdong Key Lab Agr Prod Proc,Minist Agr & Rural, Guangzhou 510610, Peoples R China

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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