[Selection of optimal ultrasonic extraction process of Elaeagnus angustifolia L. by uniform design]

The influences of ultrasonic frequency, ultrasonic time and solvent content on the extraction rate of fat oil in Elaeagnus angustifolia L. were studied. The optimum extraction condition was obtained. The results showed that the ultrasonic extraction method of fat oil in Elaeagnus angustifolia L. could save time, improve extraction rate and need not be hot compared with traditional extraction method.