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Journal of Applied Sciences
Year: 2009  |  Volume: 9  |  Issue: 17  |  Page No.: 3068 - 3073

Comparison of Sweet Sorghum and Cassava for Ethanol Production by Using Saccharomyces cerevisiae

N. Nadir, M. Mel, M.I.A. Karim and R.M. Yunus    

Abstract: The two-step enzymatic hydrolysis of sweet sorghum and cassava were performed by commercially available α-amylase and glucoamylase and further ethanol fermentation of the obtained hydrolyzates by Saccharomyces cerevisiae were studied. For both sweet sorghum and cassava, the hydrolysis and fermentation were done in a 2 L stirred tank bioreactor, B-Braun fermenter, by using the same conditions. The amount of glucose obtained after hydrolysis process was greater in sweet sorghum compared to cassava, which are 50.07 and 40.00 g L-1, respectively. Also, sweet sorghum gave higher ethanol concentration than cassava at the 64 h of fermentation process, which are 40.11 and 34.07 g L-1, respectively.

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