Production of Bio-ethanol from Sugar Molasses Using Saccharomyces Cerevisiae

Shanmugam Periyasamy, Sivakumar Venkatachalam, Sridhar Ramasamy, Venkatesan Srinivasan


Saccharomyces cerevisiae is the cheapest strain available for the conversion of biomass substrate. In the present study, it is used for bio-ethanol production from sugar molasses. The influencing parameters that affect the production of bio-ethanol from sugar molasses are optimized. The optimal values of the parameters such as temperature, pH, substrate concentration, enzyme concentration and fermentation period are found to be 35°C, 4.0, 300 gm/l, 2 gm/l and 72 h respectively. Under this optimum operating condition the maximum of 53% bio-ethanol yield is achieved. The rate of formation of bio-ethanol is found to be well fitted with Michael-Menten equation and the rate constants such as Vmax and Km are found to be 0.71 mol/l sec and 81.63 mol/l respectively. 

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Modern Applied Science   ISSN 1913-1844 (Print)   ISSN 1913-1852 (Online)

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