马缨丹挥发油体外抗氧化活性研究  

Antioxidant Activity of Essential Oils of Lamtana camara

作　　者：郭占京[1] 王勤[1] 黄宏妙[1] 程世贤[1] 周丽霞[1] 尧昊秋 

机构地区：[1]广西中医药大学,南宁530001

出　　处：《中国实验方剂学杂志》2013年第11期235-237,共3页Chinese Journal of Experimental Traditional Medical Formulae

摘　　要：目的:对马缨丹挥发油的抗氧化能力进行研究。方法:用95%乙醇将马缨丹挥发油配制成不同质量浓度(0.4,0.8,1.2,1.6,2.0 g.L-1)溶液,采用二苯代苦味酰自由基(DPPH.)法、2,2'-联氨-双(3-乙基苯并噻唑啉-6-磺酸)(ABTS+.)法和铁氰化钾还原法检测各不同浓度挥发油的抗氧化能力。结果:马缨丹挥发油对ABTS+.的清除能力较强,清除率可高达52.50%;但对DPPH.清除能力较弱,清除率仅为21.05%;同时其还原能力也随着浓度的增大而增强。结论:马缨丹挥发油对DPPH.的清除能力较弱,但具有较强的清除ABTS+.能力和还原能力,其能力强弱与其浓度有一定的量效关系,可作为天然抗氧化剂及功能性食品的开发资源。Objective： To study the antioxidant activity of essential oils of Lamtana camara. Method： The essential oils of L. camara were preparated into different doses （0.4,0.8,1.2,1.6,2.0 g·L^-1） with 95% ethanol. And the antioxidant activities were studied using DPPH assay, ABTS＋assay and reducing power assay. Result： The essential oils of L. camara possessed good scavenging activities on ABTS＋radical （reaching to 52.50%）,but weak scavenging activities on DPPH radical （only reaching to 21.05%）. Their reducing power activities were in the sequence of 2.0 g·L^-1〉1.6 g·L^-1 〉 1.2 g·L^-1 〉 0.8 g·L^-1 〉 0.4 g·L^-1. Conclusion： The essential oils of L. camara showed good activities on both scavenging ABTS＋radical and reducing power, but low activity on scavenging DPPH radical. All antioxidant activity showed a concentration-effect relationship. The essential oils can be employed as natural antioxidants and health care products.

关 键 词：马缨丹 挥发油 抗氧化活性 

分 类 号：R285.5[医药卫生—中药学]