Development and characterization of novel antimicrobial bilayer films based on Polylactic acid (PLA)/Pickering emulsions

被引：100

作者：

Zhu, Jun-You ^{[1
]}

Tang, Chuan-He ^{[1
]}

Yin, Shou-Wei ^{[1
,2
]}

Yang, Xiao-Quan ^{[1
]}

机构：

[1] South China Univ Technol, Guangdong Prov Key Lab Green Proc Nat Prod & Prod, Res & Dev Ctr Food Prot, Guangzhou 510640, Guangdong, Peoples R China

[2] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2018年 / 181卷

基金：

芬兰科学院; 中国国家自然科学基金;

关键词：

Bilayer films; PLA; Pickering emulsions; Zein/chitosan colloid particles; Thymol; Antimicrobial films; Antioxidant films; SOY PROTEIN ISOLATE; MECHANICAL-PROPERTIES; BARRIER PROPERTIES; POLY(LACTIC ACID); THYMOL; PARTICLES; RELEASE; PLA; FABRICATION; GELATIN;

D O I：

10.1016/j.carbpol.2017.11.085

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Biodegradable food packaging is sustainable and has a great application prospect. PLA is a promising alternative for petroleum-derived polymers. However, PLA packaging suffers from poor barrier properties compared with petroleum-derived ones. To address this issue, we designed bilayer films based on PLA and Pickering emulsions. The formed bilayer films were compact and uniform and double layers were combined firmly. This strategy enhanced mechanical resistance, ductility and moisture barrier of Pickering emulsion films, and concomitantly enhanced the oxygen barrier for PLA films. Thymol loadings in Pickering emulsion layer endowed them with antimicrobial and antioxidant activity. The release profile of thymol was well fitted with Fick's second law. The antimicrobial activity of the films depended on film types, and Pickering emulsion layer presented larger inhibition zone than PLA layer, hinting that the films possessed directional releasing role. This study opens a promising route to fabricate bilayer architecture creating synergism of each layer.

引用

页码：727 / 735

页数：9

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