聚乙烯醇
木聚糖
材料科学
食品包装
复合数
化学工程
纳米-
复合薄膜
复合材料
化学
有机化学
水解
食品科学
工程类
作者
Hong Wang,Tianren Xue,Shuo Wang,Xiaoli Jia,Shenghui Cao,Baolong Niu,Ruijie Guo,Hong Yan
标识
DOI:10.1016/j.ijbiomac.2022.06.157
摘要
Xylan could be considered as a good potential candidate for food packaging film because of the vast source and biodegradability, however, its application was restricted by the drawbacks of poor film-forming property, humidity sensitivity, weak mechanical strength and poor antibacterial property. In this paper, xylan was firstly modified by quaternization to improve the film-forming property, then ZnO nanoparticles encapsulated by xylan (nano ZnO@Xylan) was prepared by nanoprecipitation method, finally a series of biodegradable composite films were prepared using quaternized xylan and polyvinyl alcohol with incorporation of nano ZnO@Xylan. The surface morphology, molecular structure and crystallography structure of the films were characterized. The addition of nano ZnO@Xylan decreased water vapor permeability and solubility, meanwhile obviously increased the ultraviolet shielding performance as well as the antibacterial properties of the films. The bacteriostasis rate of the films against E. coli and S. aureus reached up to 99 %. Furthermore, the preservation time of cherry tomatoes covered with ZnO@Xylan/QX/PVA films was extended to at least 21 days. In conclusion, all the results ensure that the fabricated composite films have considerable promising application in the food packaging industry.
科研通智能强力驱动
Strongly Powered by AbleSci AI