... legume soybean black seeds, and yellow soybeans interplanting, kind of skin black. Nutritional value 1, black beans nutrition comprehensive, contains ... the blood viscosity, etc is very important;3, The skin o f black soybean is black, contain anthocyanin, anthocyanin is ... in the gastric acid environment, antioxidant effect is good, improve our skin, increase the gastrointestinal peristalsis.