Compared with the ideal value suggested by FAO, the contents of eight essential amino acids in protein are very reasonable. Protein has a good amino acid composition pattern, rich in glutamic acid, alanine and aspartic acid, and high in lysine, but low in methionine and tryptophan (sulfur-containing amino acids), but high in some grains.
Soybean isoflavone is one of flavonoids, which mainly exists in leguminous plants. Flavonoids are plant pigments. Soybean isoflavone is a secondary metabolite formed during soybean growth. It can make up for the problem of insufficient estrogen secretion in women after 30 years old, improve skin moisture and elasticity, relieve menopausal syndrome and improve osteoporosis. The estrogenic effect of soybean isoflavone affects hormone secretion, metabolic biological activity, protein synthesis and growth factor activity, and it is a natural chemopreventive agent for cancer.