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KMID : 0380619900220060696
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Korean Journal of Food Science and Technology
1990 Volume.22 No. 6 p.696 ~ p.699
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Ethanol Production by the Mixed Culture of Some Aspergilli and Saccharomyces cerevisiae
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Abstract
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Some mixed culture systems consisting of koji molds and yeast were tested for the ethanol production by simultaneous saccharification and fermentation using polished rice as the substrate. Aspergillus shirousamii showed the highest ethanol production in the mixed culture with Saccharomyces cerevisiae on steamed rice added with 150 ml water in 250 ml Erlenmeyer flask. The optimum initial pH, temperature and specific surface for the ethanol production in this system were 6.5, 30℃, and 0.1, respectively. Under this condition, 12.9% ethanol was produced with inoculation with 5X l0² conidia/ml of A. shirousamii and 5X 10^6 cells/ml of S. eerevisiae in 10 days.
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