ISOLATION OF ZYMOMONAS MOBILIS FROM PRIMED BEER

Abstract

Isolation from beer of a sucrose‐fermenting species of Zymomonas confirmed as Z. mobilis, is recorded. Motility and H2S production were variable and sensitive to precise environmental conditions. The beer‐spoilage potential of this species was established as limited. A strain of Z. anaerobia was isolated which acquired sucrose‐fermenting ability after growth in fructose. It is doubtful, therefore, whether the creation of two distinct species within this genus is valid. 1974 The Institute of Brewing & Distilling