Antioxidant activity of an exopolysaccharide isolated from Lactobacillus plantarum C88
文献类型: 外文期刊
第一作者: Zhang, Li
作者: Zhang, Li;Li, Da;Zhao, Yujuan;Zhang, Xue;Zeng, Xianpeng;Yang, Zhennai;Li, Shengyu;Liu, Chunhong;Zhang, Li;Yang, Zhennai;Yang, Zhennai
作者机构:
关键词: Antioxidant activity;Exopolysaccharide;Lactic acid bacteria;Lactobacillus plantarum
期刊名称:INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES ( 影响因子:6.953; 五年影响因子:6.737 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: A neutral exopolysaccharide (EPS), designated LPC-1, was isolated from the culture of Lactobacillus plantarum C88 and purified by ion-exchange and gel-permeation chromatography. LPC-1 had an average molecular weight of 1.15×10~6Da, and it was composed of galactose and glucose with a molar ratio of 1:2. The antioxidant activity of LPC-1 was evaluated with the in vitro scavenging abilities on hydroxyl and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals. The results indicated that LPC-1 had good scavenging ability on hydroxyl radicals. Furthermore, the protective effect of LPC-1 on H_2O_2-induced Caco-2 cells oxidative injury was investigated. As results, LPC-1 inhibited the formation of malondialdehyde (MDA) and raised the activities of superoxide dismutase (SOD) and total antioxidant capacities (T-AOC) in a dose-dependent manner. These results demonstrate that the EPS from L. plantarum C88 has antioxidant effects that may involve scavenging of reactive oxygen species (ROS), up-regulation of enzymatic and non-enzymatic antioxidant activities, and reduction of lipid peroxidation.
分类号: Q71
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