食品科学 ›› 2011, Vol. 32 ›› Issue (23): 69-73.doi: 10.7506/spkx1002-6630-201123012

• 基础研究 • 上一篇    下一篇

黄酮解离常数与活性氧清除效果的关系

初 乐1,2,张 迪1,吴 薇3,籍保平1,*,王梦倩1   

  1. 1.中国农业大学食品科学与营养工程学院 2.中华全国供销合作总社济南果品研究院 3.中国农业大学工学院
  • 出版日期:2011-12-15 发布日期:2011-12-21

Relationship between Dissociation Constants of Flavonoids and Scavenging Activities against Reactive Oxygen Species

CHU Le1,2,ZHANG Di1,WU Wei3,JI Bao-ping1,*,WANG Meng-qian1   

  1. (1. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; 2. Jinan Fruit Research Institute, All China Federation of Supply and Marketing Cooperatives, Jinan 250014, China; 3. College of Engineering, China Agricultural University, Beijing 100083, China)
  • Online:2011-12-15 Published:2011-12-21

摘要: 在体外条件下,对9种常见黄酮(槲皮素、杨梅素、高良姜素、大豆苷元、染料木素、柚皮素、橙皮素、芹菜素、木犀草素)清除活性氧基团(过氧化氢(H2O2)、超氧阴离子自由基(O2- ·)、过氧亚硝基阴离子(ONOO- ·))的效果和黄酮的解离常数进行研究。结果表明:黄酮醇类化合物清除这3种活性氧基团的能力最强,黄烷酮和异黄酮类清除能力不明显。黄酮的一级解离常数与其清除活力存在相关性,与其清除O2- ·和 ONOO- · 具有显著相关性。黄酮的一级解离常数值越低,其清除活性氧基团的能力越强。

关键词: 黄酮, 过氧化氢, 超氧阴离子, 过氧亚硝基阴离子, 解离常数

Abstract: The scavenging activities of 9 common flavonoid compounds against reactive oxygen species (ROS) such as hydrogen peroxide (H2O2), superoxide anion ion radicals (O2- ·) and peroxynitrite radicals (ONOO- ·) were assayed in vitro. Also, their first-order dissociation constants were determined spectrophotonmtrically. Of the investigated flavonoid compounds, flavonols had the strongest scavenging activity against three kinds of ROS, and flavanones and isoflavones had no obvious scavenging effect on them. A significant negative correlation was achieved between the scavenging activities against O2- · and ONOO- ·and first-order dissociation constants of the investigated flavonoids.

Key words: flavonoid, hydrogen peroxide, superoxide anion ion radical, peroxynitrite radical, dissociation constant

中图分类号: