This investigation reported the isolation of the S. cerevisiae
LBM-1 strain, which is capable of growth at 42 C. In additionthe capacity of S. cerevisiae LBM-1 and K. marxianus UFV-3 to ferment sugarcane bagasse in SSF processes at 37 and 42 C were
demonstrated. The results show that these two yeast strains have
a potential for the production of ethanol through the SSF processand suggest that the use of thermotolerant yeasts and a presaccharification stage are key to increasing yields in this process.