【摘要】 以蒌蒿叶为材料,采用微波辅助提取总黄酮。在单因素试验的基础上,通过响应面法,对蒌蒿叶总黄酮的微波辅助提取工艺进行了优化,并对其抗氧化活性进行了研究。结果表明:微波辅助提取蒌蒿叶总黄酮的最佳工艺条件为料液比1︰130(g/mL),乙醇体积分数80%,微波功率440 W,处理时间6 min,在此条件下蒌蒿叶总黄酮得率为5.52%。蒌蒿叶黄酮提取液对DPPH自由基的平均抑制率为86.20%,表现出很强的抗氧化活性,因此,具有较好的综合开发利用前景。更多还原

【Abstract】 The optimization of microwave-assisted extraction of the total f lavonoids from Artemisia selengensis was studied. On the basis of design and analysis of single-factor experiments,the technological conditions of microwave-assisted extraction for total f lavonoids from Artemisia selengensis were optimized by response surface methodology,moreover,in vitro antioxidant activity of total f lavonoids from Artemisia selengensi s was also studied by DPPH. The results showed that the optimum extraction conditions of total f lavonoids from Artemisia selengensis were solid/liquid ratio of 1︰130(g/mL),ethanol concentration of 80%,microwave power of 440 W and microwave time of 6 min; futhermore,the extraction rate of total f lavonoids from Ar tem isia sele ngensis was 5.52% under t he optimal conditions; in addition,the average inhibition rate for DPPH on total f lavonoids from Artemis ia selengensis was 86.20%,which revealed stronger antioxidant activity on DPPH,and it will make a good prospect of the comprehensive exploitation and application of Artemisia selengen sis.更多还原