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

被引：50
作者：
Wen, Haitao [1 ,2 ]
Tang, Daobang [2 ]
Lin, Yaosheng [2 ]
Zou, Jinhao [2 ]
Liu, Zhongyi [1 ]
Zhou, Pengfei [2 ]
Wang, Xuping [2 ]
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
来源：
CARBOHYDRATE POLYMERS | 2023年 / 303卷
关键词：
Chitosan; gelatin film; Hydrophobic deep eutectic solvent; Antimicrobial activity; Thymol; Food packaging; COMPOSITE FILMS; GELATIN; CELLULOSE; ANTIOXIDANT; MEMBRANE; EXTRACTS; ACID;
D O I：
10.1016/j.carbpol.2022.120435
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
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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页数：10
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