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Stretchable, controlled release of active substances, and biodegradable chitosan-polyvinyl alcohol hydrogel film for antibacterial and chilled meat preservation

文献类型： 外文期刊

作者： Wang, Debao 1 ; Zhu, Chaoqiao 1 ; Yang, Qingfeng 1 ; Xu, Yuqian 1 ; Zhang, Dequan 1 ; Wang, Daoying 2 ; Liu, Fang 2 ; Hou, Chengli 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Food Sci & Technol, Key Lab Agroprod Qual & Safety Control Storage & T, Minist Agr & Rural Affairs, Beijing 100193, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Peoples R China

关键词： Chitosan; Hydrogel film; Controlled release; Biodegradable; Preservation

期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）

ISSN： 0308-8146

年卷期： 2025 年 477 卷

页码：

收录情况： SCI

摘要： In this study, we utilized chitosan (CS) and polyvinyl alcohol (PVA) as the hydrogel matrix to fabricate a multifunctional hydrogel packaging film through the dimethylsulfoxide/hydroxybenzotriazole activation system-mediated. Based on the evaluation of thermal stability and mechanical properties, the optimal polymerization ratio of PVA to CS was determined as 3:1. Hydrogels made of 6 % PVA and 2 % CS have excellent heat resistance and adhesion, with a remarkable breakage elongation of 754.3 %. The cross-linking of PVA, CS, and e-PL polymers occurred through esterification and amide reactions involving-COOH,-OH, and-NH2. The incorporation of e-PL improved the thermal stability and strain properties. In vitro antibacterial assays demonstrated that the PVA/CS@e-PL exhibited remarkable antibacterial efficacy against Staphylococcus aureus and Pseudomonas fluorescein. The PVA/CS@e-PL-0.144 showed controlled release of e-PL for over 3 d and extended the shelf life of chilled chicken to 8 d. These findings suggest that PVA/CS@e-PL-0.144 is a potential antibacterial packaging.

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