Self-Reinforced and Antibacterial Zn2+ @Vanillin/Carboxymethyl Chitosan Film for Food Packaging

被引:21
作者
Lin, Zhenhao [1 ]
Bi, Shicheng [1 ]
Du, Guangwu [1 ]
Zhang, Yuwei [1 ]
Fu, Hao [1 ]
Fu, Lihua [1 ]
Xu, Chuanhui [1 ]
Lin, Baofeng [1 ]
机构
[1] Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China
基金
中国国家自然科学基金;
关键词
carboxymethyl chitosan; vanillin; zinc oxidenanoparticle; antibacterial; ANTIOXIDANT PROPERTIES; ZINC; VANILLIN;
D O I
10.1021/acssuschemeng.3c03109
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Polysaccharide-based films cannot replace petroleum-basedfoodpackaging due to their poor mechanical properties, and the lack ofantibacterial properties also makes it difficult to extend the foodshelf life. Herein, we used the Schiff base reaction and zinc ion(Zn2+) complexation on carboxymethyl chitosan (CMCS) chainsto introduce antibacterial properties to extend the shelf life offood and achieved self-reinforcement to improve mechanical properties,reaching 7.28 MPa and making it suitable for food packaging. The Zn2+@Vanillin (VA)/CMCS film possessed broad-spectrum antibacterialproperties that extended the shelf life of fruits and offered betterthermal stability and water vapor barrier. Besides, it also providesmore comprehensive protection and inhibits the respiration of fruitsduring the preservation process that maintains the quality of thefruits. In addition, the process for the preparation of the Zn2+@VA/CMCS film was environmentally friendly (the solvent iswater), safe, and simple and had mild reaction conditions. Noteworthily,the Zn2+@VA/CMCS film possessed biodegradability (35 daysin soil) and renewable characteristics that offer significant potentialfor the development of sustainable food packaging systems. The preparation process and mechanismof the self-reinforcedand antibacterial Zn2+@vanillin/carboxymethyl chitosanfilm for sustainable food packaging systems.
引用
收藏
页码:12747 / 12758
页数:12
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