姜味草精油与提取物清除DPPH自由基活性研究  

Scavenging Capacity on Free Radical of Essential Oil and Extract from Micromeria Biflora Benth

作　　者：潘天玲[1] 李坤平[1] 陈潮珠[1] 劳碧婷[1] 

机构地区：[1]广东药学院药科学院,广东广州510006

出　　处：《辽宁中医药大学学报》2010年第10期193-194,共2页Journal of Liaoning University of Traditional Chinese Medicine

摘　　要：目的:对姜味草精油与提取物清除自由基活性进行研究。方法:选择1,1-二苯基-2-苦基肼自由基(DPPH)体外清除活性模型,采用分光光度法,测定其DPPH清除率曲线,以EC50值评价其清除DPPH活性。结果:姜味草精油DPPH清除活性EC50值为0.21%;其甲醇和乙醇提取物清除DPPH的EC50分别为0.052mg·mL-1和0.554mg·mL-1。结论:姜味草精油及其提取物具有较强的清除DPPH活性。Objective：To evaluate the scavenging capacity on free radical of essential oil and extract of Micromeria biflora benth.Methods：The scavenging activities towards 1,1-diphenyl-2-picryhydrazyl radical（DPPH·）were determined by spectrophotometric method on in vitro systems.Results：The essential oil and extract from Micromeria biflora benth.by menthol and ethanol and all had scavenging effects on DPPH·,and the EC50 were 0.21%,0.052mg·mL^-1 and 0.554mg·mL^-1 respectively.Conclusion：The essential oil and extract from Micromeria biflora benth all exhibited excellent scavenging effect on DPPH· radical.

关 键 词：姜味草 精油 提取物 自由基清除活性 1 1-二苯基-2-苦基肼 

分 类 号：R281.5[医药卫生—中药学]