SOYBEAN PROTEIN, PROCESS FOR PRODUCING THE SAME AND ACIDIC PROTEIN FOODS WITH THE USE OF THE SAME

摘要

It is intended to provide a soybean protein material which is excellent in solubility, stability, emulsifying properties and gel-forming properties under acidic conditions and thus advantageously usable in acidic foods. A solution containing soybean protein is subjected to a treatment for eliminating or inactivating polyanionic substances contained therein and/or adding a polycationic substance and then heated at 100 DEG C or above under acidic conditions. Thus, a soybean protein having a high solubility under acidic conditions and thus being appropriately usable in acidic foods can be obtained. By using this protein, protein foods in the acidic region can be provided. By combining the above-described treatment with a protease-digestion treatment, a soybean protein hydrolyzate having a high solubility in the acidic region can be efficiently obtained.