羽叶千里光叶抗氧化活性研究

Studies on the Antioxidant Activities of Leaves from Senecio argunensis

目的:研究羽叶千里光叶的抗氧化活性部位。方法:采用DPPH.法和β-胡萝卜素/亚油酸体系分别测定羽叶千里光叶的乙酸乙酯、正丁醇和水等不同极性溶剂提取物的抗氧化活性。结果:在DPPH.清除体系中,羽叶千里光叶乙酸乙酯、正丁醇和水提取部位的半数抑制浓度分别为0.0198、0.0219、0.092 mg/m l。在β-胡萝卜素/亚油酸体系中,羽叶千里光叶的抗氧化作用强弱依次为乙酸乙酯提取部位、正丁醇提取部位和水提取部位。结论:羽叶千里光叶三个提取部位均有抗氧化活性,其中乙酸乙酯提取部位的抗氧化能力最强。

Objective ：To study antioxidant activities of different extracts of Senecio argunensis. Methods： The antioxidant activities of S. argunensis extracts with acetoacetate, n-Butanol and water were detected by DPPH free radical-scavenging method and β-carotene/linoleic acid system. Results： The acetoacetate, n-Butanol and water extracts from S. argunensis eliminated DPPH · in dose-dependent manner, their EC50 values were 0. 0198,0. 0219 and 0. 092 mg/ml, respectively. The strength order of the antioxidant activities of the three parts in β-carotene/linoleic acid system was acetoacetate, n-Butanol and water extracts. Conclusion： The extracts of the three parts of S. argunensis all have antioxidant activities. Among these extracts, extracts with acetoacetate have the highest antioxidant activity.