Modulating urea degradation in wine yeast

Details Modulating urea degradation in wine yeast Modulating urea degradation in wine yeast

C - Chemistry, Metallurgy

12

N

C12N 15/81 (2006.01) C12C 12/00 (2006.01) C12G 1/022 (2006.01) C12N 9/00 (2006.01) C12N 9/80 (2006.01) C12P 7/06 (2006.01)

Patent

CA 2464977

The invention provides yeast strains transformed to reduce nitrogen catabolite repression of a gene encoding a urea degrading enzymatic activity expressed by the yeast strain under fermenting conditions. Strains ofSaccharomyces cerevisiae are for example provided having enhanced DUR1,2 urea carboxylase- allophanate hydrolase activity under wine fermenting conditions.

L'invention concerne des souches de levure transformées de façon à réduire la répression catabolique azotée d'un gène codant pour une activité enzymatique de dégradation d'urée exprimée par la souche de levure dans des conditions de fermentation. L'invention concerne plus particulièrement des souches de <i>Saccharomyces cerevisiae</i> possédant une activité améliorée du gène DUR1,2 de la carboxylase-allophanate hydrolase de l'urée dans des conditions de fermentation du vin.

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