GENETICALLY MODIFIED YEAST STRAIN
A polyploid transformed yeast cell comprising a deleted or disrupted GDH1 gene encoding an NADPH-dependent glutamate dehydrogenase. The polyploid yeast cell shows increased production of ethanol and reduced production of glycerol when compared with a control polyploid yeast cell.
1 . A polyploid transformed yeast cell comprising a deleted or disrupted GDH1 gene encoding an NADPH-dependent glutamate dehydrogenase, said polyploid yeast cell showing increased production of ethanol and reduced production of glycerol when compared with a control polyploid yeast cell.
2 . A method for preparing a polyploid transformed yeast cell showing increased production of ethanol and reduced production of glycerol when compared with a control polyploid yeast cell which method comprises disrupting or deleting alleles of a GDH1 gene present in a polyploid yeast cell.
3 . A method for producing ethanol with reduced production of glycerol by-product which method comprises culturing the polyploid transformed yeast cell of claim 1 .