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

Li Xu, Hong Mei Li, Yi Bing Huang, Hua Wang, Guang Jun Nie, Xue Zhong Zhang

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Soybean bioactive peptides(SBPs) were prepared from the isolated soybean protein by proteolysis with an alkaline protease, alcalase, at 50°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°C. In addition, soybean peptides show higher anti-oxidative activity compared with GSH.

Original languageEnglish (US)
Pages (from-to)205-208
Number of pages4
JournalChemical Research in Chinese Universities
Volume22
Issue number2
DOIs
StatePublished - Jan 1 2006

Keywords

  • Anti-oxidative activity
  • Linoleic acid peroxidation system
  • Soybean bioactive peptides

ASJC Scopus subject areas

  • Chemistry(all)

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