Mechanisms of slow-release antibacterial properties in chitosan-titanium - titanium dioxide stabilized perilla essential oil Pickering emulsions: Focusing on oil-water interfacial behaviors
文献类型： 外文期刊
第一作者： Wang, Hengheng
作者： Wang, Hengheng;Xiang, Huan;Sun-Waterhouse, Dongxiao;Zhao, Yongqiang;Chen, Shengjun;Wu, Yanyan;Wang, Yueqi;Wang, Yueqi;Wang, Hengheng;Sun-Waterhouse, Dongxiao
作者机构：
关键词： Chitosan-titanium dioxide composite particles; Pickering emulsion; Interfacial behavior; Slow-release; Antibacterial mechanism; Active packaging films
期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：10.7； 五年影响因子：10.2 ）
ISSN： 0144-8617
年卷期： 2024 年 346 卷
页码：
收录情况： SCI
摘要： Perilla essential oil (PLEO) offers benefits for food preservation and healthcare, yet its instability restricts its applications. In this study, chitosan (CS) and TiO2 2 used to prepare composite particles. TiO2, 2 , after being modified with sodium laurate (SL), was successfully introduced at 0.1 %-3 - 3 % into the CS matrix. The resulting CS-SL-TiO2 2 composite particles can be formed by intertwining and rearranging through intramolecular and intermolecular interactions, and form an O/W interface with stability and viscoelasticity. The Pickering emulsions stabilized by these particles exhibit non-Newtonian pseudoplastic behavior, shear-thinning properties, and slow-release characteristics, along with antibacterial activity. Emulsions with 0.5 % and 1 % CS-SL-TiO2 2 composites demonstrated superior antibacterial effects against Escherichia coli and Staphylococcus aureus. . The study revealed that all emulsions undergo Fickian diffusion and a sustained release of PLEO, with the Ritger-Peppas model best describing this release mechanism. The slow-release behaviors positively correlates with interfacial pressure, composite particle size, composite particle potential, composite contact angle, emulsion particle size and emulsion potential, but negatively correlates with diffusion rate, penetration rate, release kinetics and release rate. The findings lay groundwork for developing slow-release antimicrobial emulsions within polysaccharide matrices, showcasing promise for antimicrobial packaging solutions and enhanced food preservation techniques.
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