Decationising dairy liquid by-prods. e.g. whey

摘要

Dairy liquid by-prods. are decationised by passing through a cationic resin of low H+ content, then through a cationic resin of high H+ content until the desired pH and deg. of decationisation arc reached and regenerating the resins by passing an aq. conc. acid soln. through the strong resin and then through the weak resin. - Pref. the by-prods. comprise whey obtd. after coagulation of the casein by rennet and concentrated to a solids content of 18-25 wt.%. More pref. they comprise whey concentrates and partially dimineralised by electrodialysis.