壳聚糖
复合数
淀粉
食品科学
羧甲基纤维素
抗菌活性
食品包装
极限抗拉强度
化学工程
化学
材料科学
核化学
复合材料
有机化学
细菌
工程类
生物
冶金
遗传学
钠
作者
Lei Wu,Shenghua Lv,Dequan Wei,Siran Zhang,Shanshan Zhang,Zexiong Li,Leipeng Liu,Tingxiang He
标识
DOI:10.1016/j.foodhyd.2022.108329
摘要
Using urea as an intermediate, graphene oxide (GO) was modified with carboxymethyl cellulose (CMC) to obtain a uniformly dispersed GO monolayer dispersion for starch/chitosan composite preparation films. The structure and properties of modified GO and starch/chitosan composite films were characterized by FTIR, XRD, and TG. It was found that the modified GO could form a single layer uniformly and stably dispersed in the starch/chitosan composite film. At low GO content (0.01 wt%), the tensile properties of the films increased by 91.7% to 62.5 MPa compared with the control group, the water vapor permeability (WVP) was low, the water resistance was good, and the UV shielding effect was maintained at 92% under 50% visible light. At the same time, the film changed from overflow antibacterial mode to contact antibacterial mode. The antibacterial ability against Escherichia coli and Staphylococcus aureus increased by 23.8% and 25.6%, respectively, compared with the control group. It has an apparent preservation ability for fresh fruit. These excellent characteristics can be widely used in food packaging and pharmaceutical fields.
科研通智能强力驱动
Strongly Powered by AbleSci AI