摘要
用K3[Fe（CN）6]测定了玉米多肽的还原力；采用脱氧核糖一铁体系、超氧阴离子自由基体系、二苯代苦味肼基自由基（DPPH·）体系对玉米多肽的抗氧化活性进行了研究，并同VC进行了比较。结果表明：玉米多肽具有还原力。玉米多肽对这几种自由基均有不同程度的清除作用，其中在20～50mg／mE清除羟基自由基能力与VC相差不大；玉米多肽清除DPPH·和O^2-·的能力均低于Vc，玉米多肽5mg／mL时，DPPH·清除率接近57．59％，10mg／mL时，O^2-·清除率为46．05％。
The deoxidizing capability of corn peptide was evaluated by using K3[Fe（CN）6]test. The antioxidant activity of corn peptide was studied through the systems of DNA - Fe, superoxide radical （O^2- ·）, and DPPH·, compared with those of VC. Results show that the corn peptide has different scavenging effects on these radical systems. At a concentration of 20 - 50 mg/mL, the scavenging capability of the corn peptide for hydroxyl radical is similar to that of VC, but for DPPH· and O^2- · are both lower than those of VC. At 5 mg/mL, the scavenging rate of the corn peptide for DPPH· is 57.59%, and atl0 mg/mL the scavenging rate for O^2-·is 46.05%.
出处
《中国粮油学报》
EI
CAS
CSCD
北大核心
2008年第1期36-38,43,共4页
Journal of the Chinese Cereals and Oils Association
