Abstract: The present invention relates to an ethanol producing microbial strain, such as Saccharomyces cerevisiae strain, being able to grow and produce ethanol from lignocellulosic hydrolysates comprising growth inhibiting compounds of the group furfural and 5-hydroxy-methyl furfural, in a batch, fed-batch or continuous fermentation, said microbial strain being tolerant to such inhibiting compounds, which strain is upregulated and/or over expressed with regard to one or more of the following genes: LAT1, ALD6, ADH5, ADH6, GDH3, OYE3, SER3, GND2, MDH2, IDP3, ADH7, AAD15, ERG27, HMG1, LYS5, SPS19, SGE1.

Abstract: The present invention relates to an ethanol producing microbial strain, such as Saccharomyces cerevisiae strain, being able to grow and produce ethanol from lignocellulosic hydrolysates comprising growth inhibiting compounds of the group furfural and 5-hydroxy-methyl furfural, in a batch, fed-batch or continuous fermentation, said microbial strain being tolerant to such inhibiting compounds, which strain is upregulated and/or over expressed with regard to one or more of the following genes: LAT1, ALD6, ADH5, ADH6, GDH3, OYE3, SER3, GND2, MDH2, IDP3, ADH7, AAD15, ERG27, HMG1, LYS5, SPS19, SGE1.

Abstract: The invention relates to an isolated polypeptide having NADH dependent HMF reductase activity, wherein said polypeptide shows 80% homology to the amino acid sequence shown in SEQ ID NO:2 and which differs from SEQ ID NO:2 in that at least S117L and Y295 or S110 is substituted, a nucleotide sequence coding for said polypeptide, a vector comprising said polypeptide or nucleotide sequence, host comprising said nucleotide sequence or vector as well as the use of the polypeptide for the reduction of furan or carbonyl compounds in lignocellulosic material or in any furan or carbonyl containing material.

Abstract: The invention relates to an isolated polypeptide having NADH dependent HMF reductase activity, wherein said polypeptide shows 80% homology to the amino acid sequence shown in SEQ ID NO:2 and which differs from SEQ ID NO:2 in that at least S117L and Y295 or S110 is substituted, a nucleotide sequence coding for said polypeptide, a vector comprising said polypeptide or nucleotide sequence, host comprising said nucleotide sequence or vector as well as the use of the polypeptide for the reduction of furan or carbonyl compounds in lignocellulosic material or in any furan or carbonyl containing material.

Abstract: The present invention relates to an ethanol producing microbial strain, such as Saccharomyces cerevisiae strain, being able to grow and produce ethanol from lignocellulosic hydrolysates comprising growth inhibiting compounds of the group furfural and 5-hydroxy-methyl furfural, in a batch, fed-batch or continuous fermentation, said microbial strain being tolerant to such inhibiting compounds, which strain is upregulated and/or over expressed with regard to one or more of the following genes: LAT1, ALD6, ADH5, ADH6, GDH3, OYE3, SER3, GND2, MDH2, IDP3, ADH7, AAD15, ERG27, HMG1, LYS5, SPS19, SGE1.

Abstract: The present invention relates to an ethanol producing microbial strain, such as Saccharomyces cerevisiae strain, being able to grow and produce ethanol from lignocellulosic hydrolysates comprising growth inhibiting compounds of the group furfural and 5-hydroxy-methyl furfural, in a batch, fed-batch or continuous fermentation, said microbial strain being tolerant to such inhibiting compounds, which strain is upregulated and/or over expressed with regard to one or more of the following genes: LAT1, ALD6, ADH5, ADH6, GDH3, OYE3, SER3, GND2, MDH2, IDP3, ADH7, AAD15, ERG27, HMG1, LYS5, SPS19, SGE1.