A study on anti-oxidative activity of soybean peptides with linoleic acid peroxidation systems

被引：4

作者：

Xu, L

Li, HM

Huang, YB

Wang, H

Nie, GJ

Zhang, XZ ^{[1
]}

机构：

[1] Jilin Univ, Key Lab Mol Enzymol & Engn, Minist Educ, Changchun 130021, Peoples R China

[2] Jilin Agr Univ, Coll Food Engn, Changchun 130018, Peoples R China

[3] Jilin Univ, China Japan Union Hosp, Changchun 130033, Peoples R China

来源：

CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2006年 / 22卷 / 02期

关键词：

soybean bioactive peptides; anti-oxidative activity; linoleic acid peroxidation system;

D O I：

10.1016/S1005-9040(06)60077-9

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Soybean bioactive peptides (SBPs) were prepared from the isolated soybean protein by proteolysis with an alkaline protease, alcalase, at 50 degrees C and pH = 8.0. The dependence of hydrolysis time on hydrolysis degree and molecular weight distribution were examined. The hydrolysate was fractionated on a Sephadex G-25 column and the anti-oxidative activities of the fractions were detected by the method of pyrogallol auto-oxidation. The average chain length of soybean peptides that have anti-oxidative activity was estimated to be about 7. The anti-oxidative properties of the soybean peptide were also studied by using linoleic acid peroxidation systems. The optimal condition of the peroxidation system was set up, Vc/Cu2+ as the inducer at pH = 7. 4 and 25 degrees C. In addition, soybean peptides show higher antioxidative activity compared with GSH.

引用

页码：205 / 208

页数：4

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