Ester formation by yeasts. 1. Ethyl acetate formation by Hansenula species

Abstract
Ethyl acetate, ethanol, acetic acid and acetaldehyde were identified as products of the metabolism of glucose by H. anomala. H. anomala produces about 25 mmol. ethyl acetate/lOOmmol. glucose utilized under aerobic growth conditions. H. saturnus produces more CO2 and cell substance and less ethyl acetate and ethanol than does H. anomala under similar growth conditions. The formation of ethyl acetate is an aerobic process.