微波辅助提取万寿菊花总黄酮的工艺研究

Study on the technology of microwave-assisted extracting total flavonoids from marigold flower

以万寿菊花粉末为原料,采用单因素和正交实验考察了微波辅助提取的微波功率、微波辐射时间、乙醇浓度和料液比对万寿菊花总黄酮得率的影响。结果表明,微波辅助提取万寿菊花总黄酮的最佳工艺条件为:微波功率480 W,微波辐射时间120 s,乙醇浓度70%,料液比1∶40,提取次数2次。在此最佳工艺条件下,万寿菊花总黄酮得率达到40.45 mg/g。

The optimal technology of total flavonoids from marigold flower using microwave-assisted extrac- tion with the single factor and orthogonal design experiment were investigated, the effects of microwave power,microwave radiation time, ethanol concentration, liquid-solid ratio on the yield of total flavonoids were studied. The results showed that the optimal extracting technology and conditions were as follows：micro- wave power 480 W,microwave radiation time 120 s,ethanol concentration 70% ,liquid-solid ratio 1：40 and ex- traction time 2. Under the optimal extracting technology and conditions, the extracting yield of total fla- voniods from marigold flower can reach 40.45 mg/g.