Breeding of Yeast Strains Able to Grow at 42°C

Abstract

  Saccharomyces cerevisiae strain ②-39/10A is able to ferment alcohol at 42°C. The ability of various yeast strains, including ②-39/10A, to grow at high temperatures was compared. The strain ②-39/10A was able to grow at 42°C and the high temperature growth was found to be governed by more than one gene. The yeast strains that can grow at 42°C were bred by crossing the haploid strains, which are inherently unable to grow at high temperatures.