Study on Extraction Technology of Proanthocyanidins from Fructus Ligustri Lucidi Skin by Ultrasonic-assisted
The extraction technology of proanthocyanidins from Fructus Ligustri Lucidi skin was optimized by microwave-assisted. The single factor and orthogonal test was used to study the effects of proanthocyanidins ex-traction yield, including hydrochloric acid content, ethanol concentration, material-liquid ratio, ultrasonic time and extraction temperature. The results showed that the optimum extraction technology were:hydrochloric acid 1%, ethanol 60%, material-liquid ratio 1:10 (g/mL), ultrasonic time 20 min and extraction tempera-ture 50℃. The proanthocyanidins extraction yield was 4.4%at the best process. The process was simple and short time, and the test provided referential basis for the further research.