Study on ultrasonic extraction of polysaccharide in sweet potato leaves

Objective To study a highly active technology saving energy and time to extract polysaccharide from sweet potato leaves.Method The extraction rate of sweet potato leaves polysaccharide was the assessment index,the optimum extraction technology was selected with the orthogonal design.Results The ultrasonic extraction technology was used to extract the polysaccharide from sweet potato leaves,and the optimum extraction technology condition included amount of water 40 times,extracting time 60 min,extracting temperature 75 ℃ and ultrasonic power 400 W.Conclusion The optimum technology can extract highly the polysaccharide from sweet potato leaves.