Black Turtle Beans

Although there are several kinds of beans that are black, the black beans most widely used in American cuisine are those that are sometimes called turtle beans. Their dark color indicates a high concentration of anthocyanins, flavonoids known for their antioxidant effect. A half-cup serving of black beans has an ORAC score similar to that of plums, cranberries, grapes, and apples.
Black beans, like most other beans, are rich in fiber, protein, and minerals. They are also an especially good source of molybdenum.
Nutritional Facts :
One-half cup of boiled black beans provides 113.5 calories, 20.4 g carbohydrate, 7.6 g protein, 0.5 g fat, 7.5 g dietary fiber, 5 IU vitamin A, 128 mcg folic acid, 305.5 mg potassium, 1 mg sodium, 120.5 mg phosphorus, 23 mg calcium, 1.8 mg iron, 60 mg magnesium, and 0.96 mg zinc.