Carboxymethyl chitosan/polyvinyl alcohol hydrogel films by incorporating MSNs as ε-PL carrier with pH-responsive controlled release and antibacterial properties

文献类型： 外文期刊

第一作者： Wang, Debao

作者： Wang, Debao;Fan, Simin;Li, Xin;Chen, Li;Wen, Xiangyuan;Xu, Yuqian;Zhu, Chaoqiao;Hou, Chengli;Zhang, Dequan

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关键词： Carboxymethyl chitosan; Mesoporous silica nanoparticles; pH-responsive controlled release; Antibacterial; Preservation

期刊名称：FOOD PACKAGING AND SHELF LIFE （ 影响因子：10.6； 五年影响因子：9.8 ）

ISSN： 2214-2894

年卷期： 2024 年 46 卷

页码：

收录情况： SCI

摘要： A hydrogel film with pH-responsive release and excellent antibacterial properties was developed by utilizing mesoporous silica nanoparticles (MSNs) as carriers for a-PL. Carboxymethyl chitosan (CMCS) is grafted onto aminated-MSNs through amine-bond reaction mediated, which is subsequently bound to polyvinyl alcohol (PVA) by esterification reaction. The addition of MSNs and optimization of CMCS proportion improved the dispersion stability of CMCS/PVA, resulting in a TSI value of 0.6 for 1.6CMCS/0.8PVA@MSNs-a-PL, which is significantly lower than other groups. The proportion increase of CMCS improved the thermal stability and water oxygen barrier capacities of the 1.6CMCS/0.8PVA@MSNs-a-PL by enhancing cross-linking with MSNs. The 1.6CMCS/ 0.8PVA@MSNs-a-PL exhibited pH-responsive release behavior, with the extent of release increasing proportionally with higher pH levels. The 1.6CMCS/0.8PVA@MSNs-a-PL exhibited significant antibacterial activity against Pseudomonas azotoformans MN10 in vitro, attributed to the a-PL's ability to damage the bacterial membrane structure. Hence, the 1.6CMCS/0.8PVA@MSNs-a-PL exhibits significant potential in food preservation.

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