Method for Production of Soybean Peptide Mixture

摘要

The object is to provide a soybean protein hydrolyzate which can be produced by hydrolysis of a soybean protein produced by "method B" as defined in the description and produces no dreg even when refrigerated under acidic conditions, particularly a soybean peptide mixture having a relatively low molecular weight. Disclosed is a method for production of a soybean peptide mixture, comprising the steps of: (a) extracting a concentrated soybean protein with water to yield an extract; (b) treating the extract with a protease under alkaline to neutral conditions; (c) further treating the resulting product with a protease under acidic conditions; (d) treating the resulting product with a phytic acid (phytase)-decomposing enzyme; and (e) separating and removing an insoluble material from the product.