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Antioxidant activity of an exopolysaccharide isolated from Lactobacillus plantarum C88

文献类型： 外文期刊

作者： Zhang, Li 1 ; Liu, Chunhong 2 ; Li, Da 1 ; Zhao, Yujuan 1 ; Zhang, Xue 1 ; Zeng, Xianpeng 1 ; Yang, Zhennai 1 ; Li, Sheng 1 ;

作者机构： 1.Jilin Acad Agr Sci, Inst Agrofood Technol, Changchun 130033, Peoples R China

2.Changchun Univ, Special Educ Coll, Changchun 130022, Peoples R China

3.Jilin Univ, Coll Biol & Agr Engn, Changchun 130025, Peoples R China

4.Beijing Technol & Business Univ, Sch Food Sci, Beijing 100048, Peoples R China

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 ）

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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.

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[1]Structural studies of the exopolysaccharide from Lactobacillus plantarum C88 using NMR spectroscopy and the program CASPER. Fontana, Carolina,Widmalm, Goran,Li, Shengyu,Yang, Zhennai.

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