Kinetics of ethanol inhibition in alcohol fermentation

J. H.T. Luong

doi:10.1002/bit.260270311

Kinetics of ethanol inhibition in alcohol fermentation

J. H.T. Luong

National Research Council of Canada

Research output: Contribution to journal › Article › peer-review

Abstract

The inhibitory effect of ethanol on yeast growth and fermentation has been studied for the strain Saccharomyces cerevisiae ATCC No. 4126 under anaerobic batch conditions. The results obtained reveal that there is no striking difference between the response of growth and ethanol fermentation. Two kinetic models are also proposed to describe the kinetic pattern of ethanol inhibition on the specific rates of growth and ethanol fermentation: (Formula Presented.) The maximum allowable ethanol concentration above which cells do not grow was predicted to be 112 g/L. The ethanol‐producing capability of the cells was completely inhibited at 115 g/L ethanol. The proposed models appear to accurately represent the experimental data obtained in this study and the literature data.

Original language	English
Pages (from-to)	280-285
Number of pages	6
Journal	Biotechnology and Bioengineering
Volume	27
Issue number	3
DOIs	https://doi.org/10.1002/bit.260270311
Publication status	Published - Mar 1985
Externally published	Yes

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AB - The inhibitory effect of ethanol on yeast growth and fermentation has been studied for the strain Saccharomyces cerevisiae ATCC No. 4126 under anaerobic batch conditions. The results obtained reveal that there is no striking difference between the response of growth and ethanol fermentation. Two kinetic models are also proposed to describe the kinetic pattern of ethanol inhibition on the specific rates of growth and ethanol fermentation: (Formula Presented.) The maximum allowable ethanol concentration above which cells do not grow was predicted to be 112 g/L. The ethanol‐producing capability of the cells was completely inhibited at 115 g/L ethanol. The proposed models appear to accurately represent the experimental data obtained in this study and the literature data.

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Kinetics of ethanol inhibition in alcohol fermentation

Abstract

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