微波法提取苦荞茶中黄酮的工艺研究

摘要

A research of extracting flavones of from buckwheat by microwave. The optimal process conditions were obtained by orthogonal experiment.The results showed that the optimal conditions were 70%alcohol ,ratio of solid to liquid 1∶20 (g/mL),microwave power 300 W,extraction time 3.0 min. under which the maximum extraction efficiency of total flavonoids was 4.13%.%以苦荞茶为原料，对从苦荞茶黄酮类化合物的微波提取工艺进行了研究。在单因素试验的基础上，通过正交试验优化工艺条件。试验结果表明：乙醇浓度为70%，料液比为1∶20（g/mL），微波功率为300 W，微波时间为3.0 min。此时黄酮的提取率达到4.13%。