期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 113, 期 -, 页码 477-482出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2013.08.012
关键词
Ovalbumin; Gum arabic; Complex coacervation; Interactions; Zeta potential
资金
- Excellent Doctoral Cultivation Foundation of Jiangnan University [JUDCF12001]
- Graduate Education Innovation Project in Jiangsu Province [CXZZ12_0764]
The formation of soluble and insoluble complexes between ovalbumin (OVA) and gum arabic (GA) polysaccharide was investigated under specific conditions (pH 1.0-7.0; temperature 4-55 degrees C; NaCl concentration 0-60 mM; total biopolymer concentration 0.05-3.0 wt%) by turbidimetric analysis. For the 2:1 OVA:GA ratio and in the absence of NaCl, soluble and insoluble complexes were observed at pH 4.61 (pH(phi 1)) and 4.18 (pH(phi 2)), respectively, with optimal biopolymer interactions occurring at pH 3.79 (pH(opt)). Under the same conditions, OVA alone gave only a weak turbidity intensity (turbidity <0.03), whereas GA had none. As the temperature increased, critical pH values shifted toward lower pH, and the maximum turbidity value occurred at 25 degrees C. The region between pH(phi 1) and pH(phi 2) was narrowed and the electrostatic interactions became weaker with increasing NaCl concentration. The maximum turbidity value increased as the total biopolymer concentration increased until reaching a critical value (2.0%), afterwards becoming a constant value. (C) 2013 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据