Abstract
The thermotolerant ethanol-producing yeast strain Kluyveromyces marxianus IMB3 was immobilized in calcium alginate and a 1:1 mixture of calcium alginate and the porous volcanic mineral, kissiris. Immobilized preparations were placed in fixed-bed column bioreactors and continuous ethanol production by systems containing both immobilized preparations was examined at 45 °C with a 100 g/l glucose feed. The effect of residence time on product concentration, bioreactor efficiency and volumetric productivities have been examined and these were all higher in systems containing the alginate/kissiris mixed immobilization matrix. Maximum ethanol concentrations produced by the continuous system ranged between 46 and 48 g/l representing efficiencies of 90–94%.
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Received: 17 February 1997
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Love, G., Gough, S., Brady, D. et al. Continuous ethanol fermentation at 45 °C using Kluyveromyces marxianus IMB3 immobilized in Calcium alginate and kissiris. Bioprocess Engineering 18, 187–189 (1998). https://doi.org/10.1007/PL00008982
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DOI: https://doi.org/10.1007/PL00008982