seemed to have similar characteristics. As a consequence, strain TW1- 3, which exhibited the strongest fermentation activity of the same group, and TB2-1 were selected for further analysis. The upper temperature limit of the two selected strains, TB2- 1 and TW1-3, after a 5-day incubation, was 46 and 47℃, re- spectively. Kiran Sree et al. (2000) classified thermotolerant yeasts as those that had the ability to grow at temperatures above 40℃. Thus, we classified our two strains as thermo- tolerant yeasts.