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Sucrose-supplemented distillery spent wash as a medium for production of ethanol at 45 degrees C by free and alginate-immobilized preparations of Kluyveromyces marxianus IMB3

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Ferguson, P, Mulholland, H, Barron, N, Brady, D and McHale, Anthony (1998) Sucrose-supplemented distillery spent wash as a medium for production of ethanol at 45 degrees C by free and alginate-immobilized preparations of Kluyveromyces marxianus IMB3. BIOPROCESS ENGINEERING, 18 (4). pp. 257-259. [Journal article]

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Abstract

Ethanol production by the thermotolerant, ethanol-producing yeast strain Kluyveromyces marxianus IMB3, was compared during growth on sucrose-supplemented laboratory-based media and distillery spent wash from the Old Bushmill's Distillery Co., Ltd., Co. Antrim, Northern Ireland. Fermentations were carried out using preparations of the free and alginate-immobilized microorganism as inocula in media supplemented with 2 and 10% (w/v) sucrose. Maximum ethanol concentrations accounted for 75-99% of the maximum theoretical yield and in all cases maximum concentrations obtained using the spent wash were similar if not slightly higher than those obtained on the sucrose-supplemented yeast growth media. In addition, the highest concentrations of ethanol were produced by the alginate-immobilized biocatalyst on both types of media. Analysis of exhausted media in the spent wash-based systems demonstrated significant decreases in the total organic carbon content following fermentation. These results confirm our earlier suggestion that ethanol production based on this microorganism in a recycle system may provide a more cost-effective means of disposing of whiskey distillery spent wash.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Pharmacy and Pharmaceutical Science
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Pharmaceutical Science and Practice
ID Code:4000
Deposited By:Professor Anthony McHale
Deposited On:18 Dec 2009 11:15
Last Modified:04 Dec 2012 11:37

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