Abstract

Based on the thermostability of caseinmacropeptide (CMP) and on the differences in molecular weight of its polymeric and monomeric forms, we have developed a method of isolating CMP from whey protein concentrate (WPC) and from liquid sweet cheese whey, particularly suited to large-scale industrial production. This procedure includes acidification and heating and ultrafiltration of cheese whey to give a CMP powder with a protein content from 75 to 79%. CMP obtained from WPC and from pure bovine, ovine, and caprine cheese whey were characterized. The CMP recovery was close to 71–76% and the purity determined by RP-HPLC ranged from 75 to 90%.

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