As for this invention, the soybean origin which exists in the soybean albumin the soybean it is ill-smelling, that the displeasure which is called it is ill-smelling, but it designated that the neutral powdered soybean albumin where the flavor which does not have the times when original flavor of the food is impaired when quite is little, utilizes in the processed food is superior is obtained as purpose. It is manufacturing method of the neutral soybean albumin where this invention, under acidity after the heating, neutralizes soybean albumin slurry or the solution, (pH 6.0 - 8.0) heats processes desirably for the second time.本発明は、大豆蛋白に存在する大豆由来の「大豆臭」と呼ばれる不快臭が極めて少なく、加工食品に利用した場合に食品の本来の風味を損なうことのない風味の優れた中性の粉末状の大豆蛋白を得ることを目的とした。本発明は、大豆蛋白スラリーあるいは溶液を酸性下で加熱後、中和(pHを6.0~8.0)し、好ましくは再度加熱処理する中性の大豆蛋白の製造法である。
