Main functional properties of soy protein isolate
Soy protein refers to the protein in soybeans. As commercial products, there are whole soybeans and various soybean products. Their protein content (the remainder is crude fiber, etc.) and digestibility are also different. For example, the digestibility of boiled soybeans is 65%, and the digestibility of full-fat soybeans is 65%. Soybean flour is 75% ~ 92%, defatted soybean flour is 84%~ 90%, tofu is 93%, and soy protein isolate is 93% ~ 97%. Soy protein isolate Main ingredients More than 90% is soybean globulin, of which the main ones are 11S globulin (relative molecular mass of about 350,000) and 7S globulin (relative molecular mass of about 170,000). Contains various essential amino acids. Since soybean protein also contains soybean isoflavones, such as soybean protein isolate with high protein purity, which contains about 76mg of soybean isoflavones per 40g, it must also have various functions of soybean isoflavones (improving osteoporosis and improving menopause in women). erythem