Ultrasonic Extraction of Flavanoids from Chapha Liumaffine D.Don

A novel extraction process of flavonoids from Chapha liumaffine D.Don by ultrasonic wave was tested.The optimum extracting conditions of flavonoids were investigated by using orthogonal experimental design.In comparison with the ethanol refluxing extraction technology,the results show that the ultrasonic method was superior to the ethanol refluxing technology.It was found that 1:25 of 60%ethanol to the bud of Chapha liumaffine D.Don weigh ratio was used with ultrasonic treatment last for 30 min at the temperature of 70℃ and ultrasonic power 140W.