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Fermentation characteristics of Dekkera bruxellensis strains
Department of Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Department of Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Department of Microbiology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden.
Department of Microbiology, Swedish University of Agricultural Sciences, Uppsala, Sweden.ORCID-id: 0000-0002-2059-9044
2010 (engelsk)Inngår i: Applied Microbiology and Biotechnology, ISSN 0175-7598, E-ISSN 1432-0614, Vol. 87, nr 4, s. 1487-1497Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The influence of pH, temperature and carbon source (glucose and maltose) on growth rate and ethanol yield of Dekkera bruxellensis was investigated using a full-factorial design. Growth rate and ethanol yield were lower on maltose than on glucose. In controlled oxygen-limited batch cultivations, the ethanol yield of the different combinations varied from 0.42 to 0.45 g (g glucose)(-1) and growth rates varied from 0.037 to 0.050 h(-1). The effect of temperature on growth rate and ethanol yield was negligible. It was not possible to model neither growth rate nor ethanol yield from the full-factorial design, as only marginal differences were observed in the conditions tested. When comparing three D. bruxellensis strains and two industrial isolates of Saccharomyces cerevisiae, S. cerevisiae grew five times faster, but the ethanol yields were 0-13% lower. The glycerol yields of S. cerevisiae strains were up to six-fold higher compared to D. bruxellensis, and the biomass yields reached only 72-84% of D. bruxellensis. Our results demonstrate that D. bruxellensis is robust to large changes in pH and temperature and may have a more energy-efficient metabolism under oxygen limitation than S. cerevisiae.

sted, utgiver, år, opplag, sider
New York, USA: Springer, 2010. Vol. 87, nr 4, s. 1487-1497
Emneord [en]
Dekkera bruxellensis, Saccharomyces cerevisiae, Ethanol yield, Growth rate, Glycerol yield, Full-factorial design
HSV kategori
Identifikatorer
URN: urn:nbn:se:oru:diva-52275DOI: 10.1007/s00253-010-2619-yISI: 000279200600028PubMedID: 20437232Scopus ID: 2-s2.0-77955551021OAI: oai:DiVA.org:oru-52275DiVA, id: diva2:971448
Merknad

Funding Agenncy:

DOM at the Swedish University of Agricultural Sciences, Uppsala

Tilgjengelig fra: 2016-09-16 Laget: 2016-09-16 Sist oppdatert: 2017-11-21bibliografisk kontrollert

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Schnürer, JohanPassoth, Volkmar
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