Complex Coacervation of O-Carboxymethylated Chitosan and Gum Arabic

被引：27

作者：

Huang, Guo-Qing ^{[1
]}

Xiao, Jun-Xia ^{[1
]}

Jia, Lin ^{[1
]}

Yang, Jian ^{[2
]}

机构：

[1] Qingdao Agr Univ, Coll Food Sci & Engn, Qingdao 266109, Peoples R China

[2] Shenzhen Polytech, Sch Appl Chem & Biol Technol, Shenzhen, Peoples R China

来源：

INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS | 2015年 / 64卷 / 04期

基金：

美国国家科学基金会;

关键词：

zeta potential; O-carboxymethylated chitosan; gum arabic; electrostatic interaction; Complex coacervation; DELIVERY; MICROENCAPSULATION; RELEASE; SYSTEMS; NANOPARTICLES; PROTEINS; CALCIUM; CHITINS;

D O I：

10.1080/00914037.2014.936591

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

The effects of O-carboxymethylation modification on the coacervation of chitosan with gum arabic (GA) were investigated. O-carboxymethylated chitosan (O-CMC) carried less net positive charge in acidic solutions and its optimum pH and biopolymer ratio for coacervation with GA were lower than those of native chitosan. O-carboxymethylation modification decreased the optimum coacervation temperature from 45 to 25 degrees C and greatly increased the sensitivity to ionic strength. Meanwhile, insoluble O-CMC-GA coacervates were formed in relative lower critical total biopolymer concentration than chitosan-GA coacervates. It was concluded that the O-carboxymethylation modification markedly influenced the electrostatic interaction of chitosan with GA. [GRAPHICS]

引用

页码：198 / 204

页数：7

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