食品科学 ›› 2010, Vol. 31 ›› Issue (15): 121-125.doi: 10.7506/spkx1002-6630-201015027

• 基础研究 • 上一篇    下一篇

顺磁共振测定姜油树脂的DPPH 自由基清除率

葛庆丰,宋明军,顾 林*   

  1. 扬州大学食品科学与工程学院
  • 收稿日期:2010-04-20 出版日期:2010-08-15 发布日期:2010-12-29
  • 通讯作者: 顾林 E-mail:gulin@yzu.edu.cn

Using ESR for Measuring DPPH Free Radical Scavenging Activity of Gingerol Oleoresin

GE Qing-feng,SONG Ming-jun,GU Lin*   

  1. School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
  • Received:2010-04-20 Online:2010-08-15 Published:2010-12-29
  • Contact: GU Lin* E-mail:gulin@yzu.edu.cn

摘要:

应用电子顺磁共振(ESR)方法测定姜油树脂对DPPH 自由基的清除效果,结果表明:当姜油树脂中姜辣素与DPPH 自由基的物质的量比达到2.0 时,5min 后就检测不出DPPH 自由基;姜辣素与DPPH 自由基物质的量比为0.25 时,可以清除50% 的DPPH 自由基。

关键词: 电子顺磁共振, 姜油树脂, DPPH 自由基清除率

Abstract:

This study investigated the use of ESR for measuring the scavenging effect of gingerol oleoresin on DPPH free radicals. DPPH free radicals could not be detected after 5 min exposure to half molar amount of gingerol, an antioxidant component contained in gingerol oleoresin. The percentage of scavenged DPPH free radicals was 50% when the molar ratio of gingerol to DPPH free radicals was 1:4.

Key words: ESR, ginger oleoresin, scavenging rate of DPPH free radicals

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