食品科学 ›› 2006, Vol. 27 ›› Issue (1): 44-46.

• 基础研究 • 上一篇    下一篇

肌肽对蛋白氧化和糖化修饰的作用研究

韩立强,杨国宇,王艳玲,郭爽   

  1. 河南农业大学牧医工程学院; 河南农业大学牧医工程学院
  • 出版日期:2006-01-15 发布日期:2011-09-05

Inhibition Effect of Carnosine on Protein Oxidation and Saccharification

HAN Li-qiang,YANG Guo-yu,WANG Yan-ling,GUO Shuang   

  1. College of Animal Husbandry and Veterinary Medicine, Henan Agricultural University
  • Online:2006-01-15 Published:2011-09-05

摘要: 肌肽是一种发现于肌肉中的二肽,具有抗氧化性。采用铁氰化钾还原法及牛血清白蛋白(BSA)氧化和糖化体系来研究肌肽的抗氧化作用。结果表明:肌肽具有还原能力;随浓度增加肌肽能够显著减少蛋白质羰基的生成(p<0.01),抑制BSA的氧化修饰;肌肽能被葡萄糖糖化修饰,随其浓度增加糖化产物的含量显著增加(p<0.01)。

关键词: 肌肽, 还原能力, BSA, 氧化, 葡萄糖, 糖化

Abstract:  Carnosine is a dipeptide found in skeletal muscle and nervous tissue, reported to possess antioxidant activity. To determine its antioxidant activity, three methods were used, namely: the reduction of K3Fe(CN)6, the system of BSA oxidation induced by CuCl2-H2O2 and BSA glycation induced by glucose. The results showed that carnosine possessed the reducing power; the presence of carnosine significantly decreased the protein carbonyl formation in a dose-dependent manner (p<0.01) and inhibited BSA oxidation. Carnosine was saccharified by glucose and the amount of saccharification end products increased (p< 0.01) with the increasing concerntration of carosine.

Key words: carnosine, reducing power, BSA, oxidation, glucose, saccharification