Continuous potable alcohol production by immobilized Saccharomyces cerevisiae on mineral kissiris

A biocatalyst prepared by the immobilization of Saccharomyces cerevisiae on the surface of the mineral kissiris was used in the present study for continuous potable-alcohol production. An ethanol productivity (calculated on the basis of liquid volume) of 10.5 g/L/h was obtained at a 0.7/h dilution r...

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Bibliographic Details
Published in:Applied biochemistry and biotechnology 1991-08, Vol.30 (2), p.203-216
Main Authors: KOUTINAS, A. A, GOURDOUPIS, C, PSARIANOS, C, KALIAFAS, A, KANELLAKI, M
Format: Article
Language:English
Subjects:
Biofuel production
Biological and medical sciences
Biotechnology
Cost-Benefit Analysis
Energy
ethanol
Ethanol - metabolism
Fermentation
Fundamental and applied biological sciences. Psychology
Glucose - metabolism
immobilized cells
Industrial applications and implications. Economical aspects
Minerals
Molasses
Saccharomyces cerevisiae - metabolism
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Summary:A biocatalyst prepared by the immobilization of Saccharomyces cerevisiae on the surface of the mineral kissiris was used in the present study for continuous potable-alcohol production. An ethanol productivity (calculated on the basis of liquid volume) of 10.5 g/L/h was obtained at a 0.7/h dilution rate, 121 g/L sucrose content, and 29.6% conversion employing molasse as feed material. Glucose, raisin extracts, and molasse were successively used as feed materials without stopping the operation of the reactor for 6 mo. The ethanol productivity and yield remained constant during the operational-stability study of the reactor, carried out for 44 d. Biomass productivity, yield, and free-cell concentration in glucose, raisin extracts, and molasse were examined. Finally, a system with two continuous reactors joined successively was also studied in the present investigation.
ISSN:0273-2289
1559-0291
DOI:10.1007/BF02921687