Method of producing fractions containing a high concentration of milk basic cystatin and decomposition products thereof

摘要

A method of producing a fraction of milk basic cystatin or its decomposition product comprising the steps of: a) preparing a milk-derived basic protein composition; b) contacting the milk-derived basic protein composition with an anion exchange resin; c) recovering a fraction which is not absorbed onto the anion exchange resin; d) contacting the fraction of step (c) with a cation exchange resin; and e) eluting and recovering a fraction which is adsorbed onto the resin with an eluent to recover a fraction containing milk basic cystatin.