Separation of whey proteins from solution using anion exchangers

摘要

A process of separating a preselected whey protein or group of whey proteins from a whey protein-containing solution, wherein the process comprises the steps: (a) contacting a why protein-containing solution with an anion exchanger at a pH level at which the preselected protein or group of proteins adsorbs to the anion exchanger, and wherein the anion exchanger, and wherein the anion exchanger comprises a water insoluble, hydrophilic, water swellable, hydroxy(C2-4)alkylated and cross-linked regenerated cellulose, derivatised with quaternary amino (QA) groups, wherein the level of substitution of the QA groups is 1.4 milli-equivalents per dry gram of anion exchanger (meq/g) or greater; and (b) recovering either or both of the following : (1) the whey protein or proteins adsorbed in step (a) and (2) the breakthrough whey protein or proteins not adsorbed in step (a).