Abstract

Glycomacropeptide (GMP) was purified from non-dialyzable fraction of sweet whey by anion-exchange chromatography on DEAE-Sephacel at two pHs 6.4 and 3.0. Chromatography at pH 3.0 (but not pH 6.4) gave a GMP fraction of high purity with its yield (1 g from every litre of whey) being approximately 100 times higher than that shown in the previous report. It was concluded that DEAE-Sephacel chromatography at pH 3.0 is a simple useful method to separate GMP from most whey proteins. It may be applicable to a large scale production of GMP.

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