Study on Extraction of Total Flavones from Sarcandrae Glabra by Microwave

The extraction process of total flavones from Sarcandrae glabra by microwave was investigated.The effects of microwave power,microwave irradiation time,ethanol volume fraction,and solid/liquid ratio(g∶mL) on the extraction rate of total flavones were studied.Through single factor experiment and orthogonal experiment,the optimum extraction conditions were determined as follows: ethanol volume fraction was 60%,solid/liquid ratio was 1∶40,the microwave power was 400 W,the irradiation lasted for 30 s and repeated for three times batchwise.Under above conditions,the extraction rate of total flavones was 9.394%.Microwave method,which had high efficiency in shorter time with less energy,was a rapid and efficient extraction technique for total flavones from Sarcandrae glabra.