OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Influence of oxygen on alcoholic fermentation by a wine strain of torulaspora delbrueckii: kinetics and carbon mass balance

Brandam, Cédric and Lai, Quoc Phong and Julien-Ortiz, Anne and Taillandier, Patricia Influence of oxygen on alcoholic fermentation by a wine strain of torulaspora delbrueckii: kinetics and carbon mass balance. (2013) Bioscience, Biotechnology and Biochemistry, vol. 77 (n° 9). pp. 1848-1853. ISSN 0916-8451

[img] (Document in English)

PDF (Author's version) - Depositor and staff only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
5MB

Official URL: http://dx.doi.org/10.1271/bbb.130228

Abstract

Torulaspora delbrueckii metabolism was assessed in a synthetic culture medium similar to grape must under various conditions: no aeration and three different oxygen feeds, in order to determine the effect of oxygen on metabolism. Carbon and nitogen mass balances were calculated to quantify metabolic fluxes. The effect of oxygen was to decrease the flux of carbon going into the fermentation pathway in favor of growth. In the absence of aeration, higher amounts of glycerol were produced, probably to maintain the redox balance. The oxygen requirement of this starin was high, since even for highest air supply oxygen became limiting after 24h. Nevertheless, this strain developped well in the absence of oxygen and consumed 220g/L of sugars (glucose/fructose) in 166h at 20°C, giving a good ethanol yield (0.50g/g).

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Other partners > Lallemand SAS (FRANCE)
Laboratory name:
Statistics:download
Deposited By: Vincent GERBAUD
Deposited On:17 Oct 2013 08:31

Repository Staff Only: item control page