Abstract
Fresh pineapple juice was inoculated with 8 preselected yeast strains and incubated for high yield ethanol production at between 25°C and 35°C. The natural pH of the juice did not affect the growth of the strains or the alcohol yields. The higher ethanol concentrations were obtained at 30°C and 35°C in the ranges of 27.17 to 46.50 g/ l and 31.38 to 54.65 g/ l, respectively, with 82% and 89% as the highest yields when referring to the theoretical yield. The study indicated that strain CMI is the best performing strain at 30°C and 35°C according to yield and productivity.
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