Patent ID: 7838633

Claim:
A method for producing a non-7S/11S-acid-precipitable soybean protein material comprising the steps of: 1) extracting proteins from a soybean having a 7S-globulin content of 20 wt % or more and a 11S-globulin content of 10 wt % or less relative to the total amount of proteins by dispersing the soybean in an aqueous solvent, 2) removing a water-insoluble fraction from the extract by centrifugation, and recovering a water-soluble fraction to produce a soybean protein solution, 3) adjusting the pH value of the soybean protein solution to 4 to 5.5, and heating the solution at 40 to 65° C., 4) adjusting the pH value of the heated soybean protein solution to a pH value ranging from 5.3 to 5.7 and higher than the pH value at the time of heating the solution, and fractionating the solution into a water-soluble fraction and a water-insoluble fraction, and 5) recovering the water-insoluble fraction obtained in step 4.