REDUCTION IN ACETATE PRODUCED BY YEAST WITH REDUCED EXPRESSION OF RSF2 OR TDA9

Described are compositions and methods relating to modified yeast with disrupted RSF2 or TDA9 genes. The yeast produces a decreased amount of acetate compared to otherwise identical parental cells. Such yeast is particularly useful for large-scale ethanol production from starch substrates where acet...

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Bibliographische Detailangaben
Hauptverfasser:	CHEN, Zhongqiang, ZHU, Quinn Qun, FAN, Xiaochun, QI, Min, WANG, Yehong Jamie, MACOOL, Daniel Joseph, BEMENT, Courtney, XUE, Zhixiong
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF CULTURE MEDIA ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE METALLURGY MICROBIOLOGY MICROORGANISMS OR ENZYMES MUTATION OR GENETIC ENGINEERING ORGANIC CHEMISTRY PEPTIDES PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS SPIRITS VINEGAR WINE
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Beschreibung
Zusammenfassung:	Described are compositions and methods relating to modified yeast with disrupted RSF2 or TDA9 genes. The yeast produces a decreased amount of acetate compared to otherwise identical parental cells. Such yeast is particularly useful for large-scale ethanol production from starch substrates where acetate is an undesirable end product. L'invention concerne des compositions et des procédés se rapportant à une levure modifiée avec des gènes RSF2 ou TDA9 interrompus. La levure produit une quantité réduite d'acétate par comparaison avec des cellules parentales autrement identiques. Une telle levure est particulièrement utile pour la production d'éthanol à grande échelle à partir de substrats d'amidon, où l'acétate est un produit final indésirable.