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
作者： Zhang, Jianming 1 ; Chen, Juan 2 ; Zhang, Chengcheng 1 ; Yi, Huaxi 2 ; Liu, Daiyao 2 ; Liu, Daqun 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Food Sci, Hangzhou 310016, Zhejiang, Peoples R China
2.Ocean Univ China, Coll Food Sci & Engn, Qingdao 266100, Shandong, Peoples R China
3.Zhejiang Acad Agr Sci, Inst Food Sci, Hangzhou, Zhejiang, Peoples R China
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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