Preparation method of soybean peptide powder

The invention provides a preparation method of soybean peptide powder, and relates to the technical field of preparation of soybean peptide powder. Mixing the soybean protein powder with water in proportion, and uniformly stirring; emulsifying and homogenizing the soybean protein slurry; adding papain, a special enzyme for vegetable protein hydrolysis and flavourzyme into the emulsified and homogenized soybean protein slurry for enzymolysis to obtain soybean protein enzymatic hydrolysate; performing spray drying and sterilization on the soybean protein enzymatic hydrolysate to obtain soybean peptide powder; the enzyme combination of papain, the special enzyme for vegetable protein hydrolysis and flavourzyme is adopted, the soybean protein powder is subjected to enzymolysis to obtain the most ideal small molecule peptide level, and the hydrolysis efficiency is high; the prepared soybean peptide powder product has the peptide content of 58% or above, is easy to digest and absorb, and has ...