How to produce soy protein
Dehulledand defatted of soy bean can be effectively extracted by water, water plus dilute alkali (pH 7-9), or aqueous solutions of sodium chloride (0.5-2 M ~ 30-120 g/l)
Soy flour
Soy flour is made by grinding soybeans into a fine powder. It comes in three forms: whole or full-fat (contains natural oils); defatted (oils removed) with 50% protein content and with either high water solubility or low water solubility; and lecithinated(lecithin added). A history of soy flour and grits has been published.As soy flour is gluten-free,yeast-raised breadsmade with soy flour are dense in texture.