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KMID : 0364819870250010080
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Korean Journal of Microbiology
1987 Volume.25 No. 1 p.80 ~ p.85
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Cell Viability and Fatty Acids Composition of Zymomonas mobilis grown at different Concentrations of Ethanol
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Kwon Suk-Heum
Lee Kye-Joon
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Abstract
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1
The aim of the present studies was to analyze the physiological background of ethanol inhibition in Zymomonas mobilis. The experiments were carried out with a number of continuous culture to give steady state concentration of ethanol. The composition of fatty acids in the cells obtained from various conditions was analyzed and cell viability was also estimated. As results, it was found that vaccenic acid was the major fatty acid in the cell of Z. mobilis and the concentration was changed apparently to increase as increasing the concentration of ethanol produced from substrate utilization. Finally it was observed also that cell viability was decreased remarkably at the elevated ethanol concentration. Those changes might play important roles in the ethanol fermentation to give more complex phenomena observed at high concentration of ethanol.
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