Recombinant yeasts for effective fermentation of glucose and...

Details Recombinant yeasts for effective fermentation of glucose and... Recombinant yeasts for effective fermentation of glucose and...

C - Chemistry, Metallurgy

12

N

C12N 15/54 (2006.01) C12N 1/19 (2006.01) C12N 9/04 (2006.01) C12N 9/12 (2006.01) C12N 15/53 (2006.01) C12P 7/06 (2006.01) C12P 7/08 (2006.01)

Patent

CA 2176038

Described are recombinant yeasts containing genes encoding xylose reductase, xylitol dehydrogenase and xylulokinase, and DNA molecules, vectors and methods useful for producing such yeasts. The recombinant yeasts effectively ferment xylose to ethanol, and preferred yeasts are capable of simultaneously fermenting glucose and xylose to ethanol thereby taking full advantage of these two sugar sources as they are found in agricultural biomass.

Cette invention concerne des levures de recombinaison qui contiennent des gènes codant la xylose réductase, la xylitol déshydrogénase et la xylulokinase, des molécules et des vecteurs d'ADN ainsi que des procédés utiles pour produire lesdites levures. Ces levures de recombinaison permettent d'effectuer efficacement la fermentation du xylose en éthanol, et les levures préférées sont capables de fermenter simultanément du glucose et du xylose en éthanol, ceci permettant de profiter complètement de ces deux sources de sucre qui se trouvent dans la biomasse agricole.

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