Novel PVA/carboxylated cellulose antimicrobial hydrogel grafted with curcumin and epsilon-polylysine for chilled chicken preservation

文献类型： 外文期刊

第一作者： Mai, Xutao

作者： Mai, Xutao;Zhang, Xinxiao;Wang, Wenzhuo;Zheng, Yuhang;Wang, Daoying;Xu, Weimin;Sun, Zhilan;Wang, Daoying;Liu, Fang;Wang, Daoying;Sun, Zhilan;Mai, Xutao;Xu, Weimin

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关键词： Carboxylated cellulose; Curcumin; epsilon-Polylysine; Bactericidal activity; Graft

期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）

ISSN： 0308-8146

年卷期： 2023 年 424 卷

页码：

收录情况： SCI

摘要： PVA/CC/CUR/PL composite films containing curcumin (CUR) and e-polylysine (PL) were prepared by casting and chemical grafting methods to address the threat to food spoilage. Morphological analysis showed that the grafting of CUR and PL resulted in a rough cross-section of the polymer matrix. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analysis confirmed the grafting of CUR and PL into the polymer matrix via esterification and amidation reactions, respectively. Thermal weight loss analysis showed that grafting process positively improved the thermal stability. The PVA/CC/CUR/PL films exhibited strong bactericidal ac-tivity, reaching 99.0% and 99.8% for Pseudomonas lundensis and Shewanella putrefaciens, respectively. After 8 days of storage, the total number of colonies and the TVB-N content in the PVA/CC/CUR/PL group decreased by 1.51 lg CFU/g and 13.77 mg/100 g, respectively. Therefore, PVA/CC/CUR/PL films are considered as a prom-ising bactericidal material with good mechanical properties, functionality, and other excellent characteristics.

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