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Continuous potable alcohol production by immobilizedSaccharomyces cerevisiae on mineral kissiris

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Abstract

A biocatalyst prepared by the immobilization ofSaccharomyces 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.

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Authors and Affiliations

  1. Department of Chemistry, University of Patras, Pairas, Greece

    A. A. Kogtimas, C. Gourdoupis, C. Psarianos & M. Kanellaki

  2. Department of Biology, University of Patras, Patras, Greece

    A. Kaliafas

Authors
  1. A. A. Kogtimas
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  2. C. Gourdoupis
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  3. C. Psarianos
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  4. A. Kaliafas
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  5. M. Kanellaki
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Kogtimas, A.A., Gourdoupis, C., Psarianos, C. et al. Continuous potable alcohol production by immobilizedSaccharomyces cerevisiae on mineral kissiris. Appl Biochem Biotechnol 30, 203–216 (1991). https://doi.org/10.1007/BF02921687

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  • DOI: https://doi.org/10.1007/BF02921687

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