C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
C12N 15/53 (2006.01) C12N 1/19 (2006.01) C12N 9/04 (2006.01) C12N 15/81 (2006.01) C12P 7/06 (2006.01) C12P 7/18 (2006.01) C12N 15/09 (2006.01)
Patent
CA 2090122
This invention relates to recombinant-DNA-technology. Specifically this invention relates to new recombinant yeast strains transformed with xylose reductase and/or xylitol dehydrogenase enzyme genes. A yeast strain transformed with the xylose reduc- tase gene is capable of reducing xylose to xylitol and consequently of producing xylitol in vivo. If both of these genes are trans- formed into a yeast strain, the resultant strain is capable of producing ethanol on xylose containing medium during fermentation. Further, the said new yeast strains are capable of expressing the said two enzymes. Xylose reductase produced by these strains can be used in an enzymatic process for the production of xylitol in vitro.
Airaksinen Ulla
Hahn-Haegerdal Baerel
Hallborn Johan
Keraenen Sirkka
Ojamo Heikki
Danisco Sweeteners Oy
Mccarthy Tetrault Llp
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