Sustained antimicrobial polymer film from γ-CD-MOF humidity switch for fruit and vegetable preservation

文献类型： 外文期刊

第一作者： Yu, Wangfei

作者： Yu, Wangfei;Wang, Guannan;Chen, Huizhi;Mu, Honglei;Niu, Ben;Han, Yanchao;Chen, Hangjun;Gao, Haiyan;Wang, Lishu;Wang, Lishu

作者机构：

关键词： gamma-CD-MOFs; Moisture slow-release switch; Nanoparticles; Slow-release antimicrobial; Hydrophilic polysaccharide film; Food 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 479 卷

页码：

收录情况： SCI

摘要： To address the poor hydrolytic stability of CD-MOF in food applications, CD-MOF loaded with thymol (TCDM) was prepared and filled into a pectin (PEC)/sodium alginate (SA) substrate with the aid of zein to obtain a thymol-CD-MOF/zein-PEC-SA (TCDM/ZPS) polymer film. Characterization revealed that zein-PEC/SA (ZPS) protected TCDM by forming amphiphilic microspheres. TCDM was able to exist stably in the hydrophilic polysaccharide substrate and achieve a long-term slow release over 336 h. Besides, environmental humidity could also be used as a switch for regulating the thymol release rate, which was consistent with the first-order release model (R-2 > 0.99). TCDM and TCDM/ZPS showed excellent antimicrobial effects against E. coli, S. aureus, and B. cinerea, the most common fungi in plant-based foods. The preservation experiment maintained the quality of strawberry and Agaricus bisporus mushroom. This strategy holds the potential to broaden the application scope and enhance the utility of CD-MOF in food preservation.

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