Method of processing a proteinous material, a product so obtained, and use thereof

摘要

A method of removing bovine insulin from a liquid fat-free proteinous material originating from cow's milk is described. The method involves contacting the liquid fat-free proteinous material, having a pH of 2 to 8, at a temperature of less then 65oC, with an adsorption resin. The weight ratio of the proteinous material to be treated to the adsorption resin is at most 100:1. The adsorption resin is macroporous styrene-based or acrylic-based. The resin treatment is combined with at least one ultra and dia-filtration treatment of the proteinous material and, if necessary, concentrating the obtained liquid material into a protein concentrate and optionally drying into a powder.