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
收藏
页码：198 / 204
页数：7
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