The Use of Radioactive Labelling to Demonstrate the Production of Dimethyl Sulphide From Dimethyl Sulphoxide During Fermentation of Wort

During fermentation, yeast reduced [14C] dimethyl sulphoxide (DMSO) to yield radioactive dimethyl sulphide (DMS) even under conditions in which no net formation of DMS could be demonstrated by GLC analysis. It was confirmed that most DMS is produced during fermentation of lager worts at 8°C.