PROTEIN PROFILES OF BEER

Abstract
As part of a study of the effect of replacing malt by barley and commercial enzyme preparations, gel chromatography on Sephadex columns and disc electrofocusing in polyacrylamide were used to prepare profiles of beer proteins. Both separation techniques revealed small though consistent differences in the protein profiles of the beers examined. The results of gel chromatography on Sephadex G-100 could be explained on the basis of raw materials composition. With disc electrofocusing correlations were observed between protein profile and composition of the raw materials and between protein profile and mashing procedure. Disc electrofocusing proved to be a reproducible and rapid method for preparing a “fingerprint” of beer proteins.