... for legume soybean black seeds, and yellow soybeans interplanting, kind of skin black. Nutritional value 1, black beans nutrition comprehensive, ... , black beans of trace elements such as zinc, copper, magnesium, molybdenum, selenium and fluorine content is very high, and these ... is black, contain anthocyanin, anthocyanin is a good source of antioxidants, can free radicals, especially in the gastric acid ...