Process for preparing milk protein resistant to acids and bases

摘要

A process for preparing a milk protein resistent to acids and bases which comprises subjecting an aqueous solution or dispersion containing casein and 0.5-30 parts of an acidic polysaccharide per 100 parts of casein at pH of 7.3-10.5 and at a temperature of 70 DEG C. or higher for 3 minutes or more. When the heat treatment is carried out in the presence of calcium or magnesium ion in an amount of up to 1.4 parts by weight per 100 parts of casein, thickening activity of the milk protein is further improved.