Characterization and antibacterial properties of chitosan-polyvinyl alcohol-3-phenyllactic acid as a biodegradable active food packaging

文献类型： 外文期刊

第一作者： Zhang, Jianming

作者： Zhang, Jianming;Zhang, Chengcheng;Liu, Daqun;Chen, Juan;Yi, Huaxi;Liu, Daiyao;Liu, Daqun

作者机构：

关键词： Chitosan; Polyvinyl alcohol; 3-phenyllactic acid; Antibacterial active films

期刊名称：FOOD PACKAGING AND SHELF LIFE （ 影响因子：8.749； 五年影响因子：8.737 ）

ISSN： 2214-2894

年卷期： 2022 年 34 卷

页码：

收录情况： SCI

摘要： Antibacterial active films based on chitosan (CS)-polyvinyl alcohol (PVA) blends enriched with 3-phenyllactic acid (3-PLA) were developed and evaluated. The CS-PVA-3-PLA films were flexible, clear, homogeneous, and smooth. The addition of 3-PLA (<1.75%) did not affect surface microstructure, thickness, color, moisture con-tent, water solubility, and water vapor permeability of films. Nevertheless, the 3-PLA incorporation remarkably improved elongation at break, ultraviolet barrier property and thermal stability and decreased tensile strength. This indicates that the 3-PLA could interact with CS-PVA matrix, which was also observed via ATR/FTIR and XDR. Furthermore, addition of 3-PLA into the CS-PVA films effectively inhibited growth of foodborne spoilage bacteria, The release curves of 3-PLA showed that CS-PVA-3-PLA film in 95% ethanol solutions had the longest release time. These results suggest that the CS-PVA-3-PLA film is a potential antibacterial and biodegradable material for food packaging applications.

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