Ethanol production from d-galactose and glycerol by Pachysolen tannophilus |
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Authors: | R. Maleszka P.Y. Wang Henry Schneider |
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Affiliation: | Molecular Genetics Group, Division of Biological Sciences, National Research Council of Canada, Ottawa, Canada K1A 0R6 |
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Abstract: | Pachysolen tannophilus has recently been shown to be able to convert d-xylose, a pentose, to ethanol. Previously, d-xylose had been considered to be nonfermentable by yeasts. The present study shows that the organism can be used to obtain ethanol from other carbohydrates previously considered as nonfermentable, either by P. tannophilus in particular, d-galactose, or by yeasts in general, glycerol. Such identification for d-galactose allows P. tannophilus to be considered for fermentation of four of the five major plant monosaccharides: d-glucose, d-mannose, d-galactose and d-xylose. The ability to ferment glycerol is of potential use, in part, for the conversion of glycerol derived from algae into ethanol. |
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Keywords: | Glycerol ethanol production Pachysolen tannophilus |
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