Abstract
Abstract The effect of sugar composition on the formation of acetate esters using immobilized yeast was investigated. When the immobilized yeast was incubated in maltose medium lacking unsaturated fatty acids, the production of ethyl acetate and isoamyl acetate was poor when compared to glucose medium, although in maltose medium the production of acetyl-CoA was less than in glucose medium. Ester production was stimulated using the immobilized yeast and wort treated with glucoamylase to hydrolyze maltose. With this method, acetate esters were produced at normal levels compared to those of beer fermented in the conventional manner.
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