Soybeans are perhaps best known for their fantastic blend of protein and fiber, also an excellent source of molybdenum and copper. They are a very good source of manganese, phosphorus, and protein as well as a good source of iron, omega-3 fatty acids, dietary fiber, vitamin B2, magnesium, vitamin K, and potassium. There are also a wide range of unique proteins, peptides, and phytonutrients contained in soy. These nutrients include flavonoids and isoflavonoids (daidzein, genistein, malonylgenistin, and malonyldaidzin); phenolic acids (caffeic, coumaric, ferulic, gallic and sinapic acids); phytoalexins (glyceollin I, glyceollin II, and glyceollin III); phytosterols (beta-sitosterol, beta-stigmasterol, campestrol); unique proteins and peptides (defensins, glycinin, conglycinin, and lunacin); and saponins (soyasaponins from group A and group B, and soyasapogenols).