High alcohol production by solid substrate fermentation from starchy substrates using thermotolerant Saccharomyces cerevisiae

Solid Substrate Fermentation system (SSF) was used to produce ethanol from various starchy substrates like sweet sorghum, sweet potato, wheat flour, r ice starch, soluble starch and potato starch using thermotolerant yeast iso late (VS3) by simultaneous saccharification and fermentation process. Alcoh ol produced was estimated by gas chromatography after an incubation time of 96 hrs at 37 degrees C and 42 degrees C. More ethanol was produced from ri ce starch and sweet sorghum. The maximum amount of ethanol produced from th ese substrates using VS3 was 10 g/100 g and 3.5 g/100 g substrate (rice sta rch) and 8.2 g and 7.5 g/100 g substrate (sweet sorghum) at 37 degrees C an d 42 degrees C respectively.