Study on water extraction process of Herba epimedii with microwave technology

Objective:TO study, the high polar media-water extraction process of Herba epimedii with the microwave technology.Method: the single parameters of extraction process was investigated with dry extract yield and extraction efficiency of icariin as content index. Result: through studying the single parameter, the optimal conditions are as follows: 70% ethanol as wetting solvent, volume of solvent to weigh of material equal to 6∶1 in wetting, 30 min wetting time, 2.5 min microwave irradiation time, volume of solvent to weigh of material equal to 50∶1 in extraction process, 10 min microwave-asissited extraction time. Conclusion: Compared with conventional methods, microwave-assisted extraction (MAE) after Microwave Pretreament (MP) of raw material was higher extraction efficiency and time-saving.