... Ipomoea batatas extract :Purple sweet potato belongs to the Convolvulaceae, Ipomoea. Also called black potato, potato flesh purple to dark purple ... , liver cancer incidence;(2).Promote gastrointestinal peristalsis:Purple sweet potato is rich in cellulose, can increase stool volume, ... batatas extract 10:1,dioscorea esculenta (lour.) burkill,sweet potato extract. We have well-trained and experienced staff ...