Extraction process of Alfalfa saponins with ultrasound
Alfalfa saponins were prepared according to a L 9(3 4) orthogonal test plan.The relationship between extracting conditions and yield of saponins extracted from Alfalfa was investigated.The results show that the processing conditions affected the yield,and the effect of each condition decreased in the following order,ultrasonic time,material/extraction solution ratio,ultrasonic power and ultrasonic temperature.Under the above optimum condition,the saponins extracted from Alfalfa yielded 1.975%.