EFFECT OF CULTURAL CONDITIONS ON ETHANOL PRODUCTION BY LOCALLY ISOLATED SACCHAROMYCES CEREVISIAE BIO-07 Arifa Tahir, Madiha Aftab & Tasnim farasat Keywords: Sugarcane molasses, ethanol fermentation, Saccharomyces cerevisiae Bio-07, optimization Address: Dr. Arifa Tahir, Environmental science department Lahore College for Women University, Lahore, Pakistan. Email address: arifa.tahir@yahoo.com, Fax: 042- 9203077 Running Title: Ethanol production by locally isolated saccharomyces cerevisiae Place of Work: Environmental science department Lahore College for Women University, Lahore Abstract: PDF File The present study describes the ethanol fermentation from sugarcane molasses by locally isolated yeast strain. Ten yeast strains were isolated from soil and cultured in 15% molassess medium. Saccharomyces cerevisiae Bio-07 gave maximum productivity (52.0g/L). Fermentation conditions were optimized for maximum production of ethanol. Maximum yield of ethanol (76.8 g/L) was obtained with 15% molasses concentration, 3% inoculum size, pH 4.5 and temperature 30 º C. Potassium Ferrocyanide (150ppm) was used to control the trace metals present in the molasses medium.

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