Black beans with high protein, low calorie properties. As consumption of vegetables is very nutritious, containing protein :36-40%, containing 18 amino acids, especially the human body must be of 8 kinds of amino acids, 19 species of oleic acid.Black bean protein content as high as 36% -40%, equivalent to 2 times of meat, eggs 3 times, 12 times the milk; black beans contains 18 amino acids, especially the human body needs eight kinds of amino acids. Black beans also contain 19 kinds of oleic acid, unsaturated fatty acid content of 80% absorption rate of 95% or more, except to meet the needs of human body fat, can lower blood cholesterol. Black bean basic cholesterol, only with phytosterols. Eat it black beans. To soften the blood vessels that nourish the skin, delay aging. Especially for high blood pressure, heart disease patients has benefits. Trace elements such as black bean zinc, copper, magnesium, molybdenum, fluorine contents are high, and these trace elements on the slow human aging, reducing blood viscosity and so is very important. Black beans in the crude fiber content as high as 4%, eat it black beans, can provide food, fiber, promote digestion and prevent constipation.