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Preparation and characterization of novel acylated chitosan/carboxymethyl konjac glucomannan nanogels for the encapsulation of polyphenols

文献类型： 外文期刊

作者： Long, Mingxiu 1 ; Wang, Hui 3 ; Li, Yongfu 2 ; Chen, Zhaojun 1 ; Zeng, Zhilong 1 ; Luo, Jingwen 3 ; Tian, Zhuxi 2 ; Zhang, Fang 2 ; Liu, Xiong 1 ;

作者机构： 1.Southwest Univ, Coll Food Sci, Chongqing 404100, Peoples R China

2.Guizhou Acad Agr Sci, Inst Modern Agr Dev, Guiyang 550025, Guizhou, Peoples R China

3.Guizhou Acad Agr Sci, Inst Biotechnol, Guiyang 550025, Guizhou, Peoples R China

关键词： Acylated chitosan; Carboxymethyl konjac polysaccharide; Nanogel; Polyphenols

期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：6.6； 五年影响因子：6.9 ）

ISSN： 0023-6438

年卷期： 2025 年 223 卷

页码：

收录情况： SCI

摘要： This research explores the development of a polysaccharide-based nanogel by modifying chitosan (Cs) and konjac glucomannan (KGM). By introducing acyl groups, the water solubility of Cs was improved, while irradiation treatment and carboxymethylation modified the molecular weight distribution and viscosity of KGM, enhancing their suitability in nanogel formulations. The nanogel synthesis was optimized, the LACs/CKGM8 nanogel (1:1) exhibited a positive surface charge, smaller and more uniform particle size, low aggregation, and high yield. Moreover, the inclusion of Rosa roxburghii Tratt polyphenols (RP) reduced the particle size and improved the structural integrity of nanogel (NG). The RP-loaded NG exhibited excellent encapsulation efficiency (EE) of 76.64 % and a loading capacity (LC) of 56.99 % for RP. The controlled RP release in simulated gastrointestinal conditions suggests these nanogels may improve oral polyphenol delivery system performance.

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