Mechanisms of slow-release antibacterial properties in chitosan-titanium - titanium dioxide stabilized perilla essential oil Pickering emulsions: Focusing on oil-water interfacial behaviors

被引：3

作者：

Wang, Hengheng ^{[1
,3
]}

Waterhouse, Geoffrey I. N.

Xiang, Huan ^{[1
]}

Sun-Waterhouse, Dongxiao ^{[1
,4
]}

Zhao, Yongqiang ^{[1
]}

Chen, Shengjun ^{[1
]}

Wu, Yanyan ^{[1
]}

Wang, Yueqi ^{[1
,2
]}

机构：

[1] Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Natl R&D Ctr Aquat Prod Proc, Key Lab Aquat Prod Proc,Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China

[2] Beibu Gulf Univ, Coll Food Engn, Guangxi Coll & Univ Key Lab Dev & High value Utili, Qinzhou 535000, Guangxi, Peoples R China

[3] Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China

[4] Univ Auckland, Sch Chem Sci, Private Bag 92019, Auckland, New Zealand

来源：

CARBOHYDRATE POLYMERS | 2024年 / 346卷

关键词：

Chitosan-titanium dioxide composite particles; Pickering emulsion; Interfacial behavior; Slow-release; Antibacterial mechanism; Active packaging films; RHEOLOGICAL PROPERTIES; NANOPARTICLES; PROTEIN;

D O I：

10.1016/j.carbpol.2024.122613

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

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.

引用

页数：16