明胶
聚乙烯醇
纳米复合材料
壳聚糖
活性包装
材料科学
抗坏血酸
单宁酸
聚合物
食品包装
化学工程
纳米颗粒
化学
纳米技术
有机化学
复合材料
食品科学
工程类
作者
Yifan Zhang,Shenglong Ling,Yueqisha Chen,Xiumin Qin,Keshan Wang,Qiujin Zhu,Yuanyuan Liu
标识
DOI:10.1016/j.foodhyd.2023.109302
摘要
As the demand for food quality and safety continues to rise, antimicrobial active packaging materials with good mechanical and barrier properties have received urgent attention from the food industry. In this study, three types of Ag/tannic acid-FeIII ion nanocomposites (TFA) were synthesized using an in-situ method and incorporated into a chitosan/gelatin/polyvinyl alcohol complex film (CF) to produce multifunctional and highly cross-linked active films. The impact of TFA prepared through three different methods on the microstructure and functional properties of the CF were investigated. The structure of the TFA-loaded films was investigated to confirm the strong intermolecular interactions between the polymers and TFA. The TFA established multidimensional physical interactions and cross-linked the polymers, thereby enhancing the mechanical properties of the CF and providing excellent antioxidant activity and photothermal effects. Under 808 nm near-infrared laser irradiation, the TFA-loaded films displayed potent antibacterial performance against both S. aureus and E. coli bacteria. This study demonstrated that the nanocomposite prepared via ascorbic acid reduction (TFAV) given the highest comprehensive performance rating to the film. It can be utilized not only for conventional food packaging but also as a continuous sterilization strategy for meat products storage due to its photothermal antibacterial functionality.
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