Each 100 grams of green beans contains 23.8 grams of protein, 58.8 grams of carbohydrates, 0.5 grams of fat, 80 milligrams of calcium, 360 milligrams of phosphorus and 6.8 milligrams of iron. It also contains carotene, vitamin B1, vitamin B2, vitamin E, niacin and various mineral elements. The protein contained in mung beans is mainly globulin and contains amino acids such as methionine, tryptophan and tyrosine. The phospholipids contained include phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, phosphatidylglycerol, phosphatidylserine and other components.