天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (3): 318-323.

• 研究论文 • 上一篇    下一篇

电子顺磁共振对五种中草药抗氧化活性的研究

周丽芳1,朱翔1,赵红莉1,蓝闽波1,2*,史新梅2   

  1. 1 华东理工大学 上海市功能性材料化学重点实验室;2 华东理工大学分析测试中心,上海 200237
  • 出版日期:2014-03-29 发布日期:2014-12-08

Study on Antioxidant Activities of Traditional Chinese Medicines by Electron Paramagnetic Resonance Technique

ZHOU Li-fang1, ZHU Xiang1, ZHAO Hong-li1, LAN Min-bo1,2*, SHI Xin-mei2   

  1. 1 Shanghai Key Laboratory of Functional Materials Chemistry,East China University of Science and Technology; 2 Research Centre of Analysis and Test,East China University of Science and Technology,Shanghai 200237,China
  • Online:2014-03-29 Published:2014-12-08

摘要: 采用电子顺磁共振(EPR)技术,通过大黄、香青兰、香茅草、懈寄生和骆驼蓬子五种中草药对1,1-二苯基-2-苦基肼自由基(DPPH)、羟基自由基(·OH)和超氧阴离子自由基(O2)3种自由基清除能力大小的比较,研究了大黄等五种中草药抗氧化活性能力。这五种中草药对3种自由基均有一定的清除作用,其中大黄清除DPPH和超氧阴离子自由基的IC50小于0.5 mg/mL,清除羟基自由基的IC50=1.892 mg/mL。结果表明五种中草药中大黄的抗氧化活性能力最强,为中草药用于生物体的抗氧化应激研究提供依据。

关键词: 电子顺磁共振, 抗氧化活性, 中草药, 自由基

Abstract: In this study,electron paramagnetic resonance (EPR) technique was used to investigate the antioxidant activities of five traditional Chinese medicines (TCM),including rhubarb, Dracocephalum moldavica L.,lemongrass,mistletoe and seed of common peganum.The 1,1-diphenyl-2-picryl hydrazyl radical (DPPH), hydroxyl free radical and superoxide anion free radicals scavenging abilities of the five studied TCMs were investigated.The results indicated that the five studied TCMs all showed scavenging abilities against three free radicals,in which rhubarb exhibited the strongest activities.Its IC50 of scavenging DPPH and superoxide anion free radical were all less than 0.5 mg/mL and the IC50 of scavenging hydroxyl free radical was 1.892 mg/mL.

Key words: electron paramagnetic resonance, antioxidant activities, traditional Chinese medicine, free radical

中图分类号: 

O657.61