Abstract: A process for producing a food is disclosed. The food material is contacted with a degradative enzyme and any one or more of a thickener in a non-solvated state, microorganism which generates a viscous material, nutritious substance and seasoning according to need. Then, a pressure treatment is performed followed by cooking after softening the food material by the action of the degradative enzyme. The process may be carried out in a packaging material for vacuum packaging such that the food retains the shape, color, taste, and flavor of the food material and includes the degradative enzyme inside the vacuum packaging uniformly.

Abstract: An electrical treatment method for soybean protein is performed in such a manner that a mixture of soybean protein and solvent is set in a first electrolytic tank having a cathode and solvent is set in a second electrolytic tank which is separated from above electrolytic tank by a diaphram or a salt bridge and is provided with an anode and DC voltage is given between the two electrodes for electrolytic treatment for soybean protein. The soybean protein's quality can be significantly improved.