【摘要】 研究了双频超声对葛根有效部位提取的影响,通过正交实验得出双频超声提取的最优条件为20+33kHz,电功率为200W,50%乙醇,葛根粉末<80目,1∶10的料液比,50℃,超声处理50min。使用HPLC对比了单频和双频在此条件下的总黄酮得率,并对双频超声提取的机理进行了探讨。更多还原

【Abstract】 The dual-frequency ultrasound method for the extraction of active ingredients from Pueraria Root was investigated and optimized. The influences of seven factors on extraction efficiency were studied. The optimum extraction conditions found were: frequency:20+33kHz;power:200W;granularity:<80 meshes;50% aqueous ethanol;solvent∶sample ratio=10∶1(v/m);extraction time: 50min;temperature:50℃. The results by single frequency extraction was compared with those by dual-frequency ultrasound by HPLC. The mechanism of dual-frequency ultrasound-assisted extraction was also studied.更多还原