method for isolating osteopontin from a milk-derived food and composition containing osteopontin

摘要

The present invention pertains to a method for isolating osteopontin from milk-derived feeds having a high concentration of protein. Particularly, the present method involves the use of a narrow window of pH and specific conductance of the milk-derived feed, which surprisingly has proven to provide a very efficient isolation of osteopontin from chemically complex feeds.