Bioactive pterostilbene encapsulated in zein via an in-situ co-precipitation strategy for efficient antimicrobial and fruit preservative

文献类型： 外文期刊

第一作者： Fang, Chunli

作者： Fang, Chunli;Guo, Xuhong;Fang, Chunli;Wei, Nan;Wei, Jia;Li, Shuying;Feng, Ting;Tan, Zicheng;Wu, Bin;Fu, Zhinan;Wang, Junyou;Guo, Xuhong

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关键词： Zein; Biobased nanopreservative; In-situ co-precipitation; Antimicrobial; Fruit protection

期刊名称：FOOD HYDROCOLLOIDS （ 影响因子：12.4； 五年影响因子：13.3 ）

ISSN： 0268-005X

年卷期： 2025 年 168 卷

页码：

收录情况： SCI

摘要： Pterostilbene (PTS) mainly originated from grapes and palm trees, is a promising bioactive phytoalexin, as it possesses excellent activity against the food-deteriorating microorganisms. For effective use in food preservation, stable encapsulation of a large amount of low-soluble PTS within biomaterials is crucial. In this work, plantsourced zein macromolecule was used for the efficient encapsulation of PTS (PTS-loaded NPs) via an in-situ co-precipitation strategy for the first time. Compared with conventional stirring precipitation methods, this flowbased new approach demonstrated superior encapsulation efficiency (>93 %) and controllable operating mode. By regulating fluid-involved parameters such as feeding components and flow rates, the particle size, size distribution, and PTS loading efficiency could be easily adjusted. The optimal PTS-loaded NPs demonstrated exceptional storage stability (>14 days), prolonged release property (>48 h), and enhanced antioxidant activity. Additionally, the PTS-loaded NPs exhibited strong antimicrobial action, reducing the growth of A. niger by 50 % and that of E. coli and S. aureus by 99 % when compared to the control. Profiting from the food-grade biomaterial, the non-toxic PTS-loaded NPs enhanced the shelf life of strawberries over 3 days when compared to control with respect to color, weight loss, firmness, and total soluble solids.

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