Effects of furfural on the respiratory metabolism of Saccharomyces cerevisiae in glucose-limited chemostats

Article Abstract:

Results show that furfural tolerance appears to be directly coupled to the ability to convert furfural to less inhibitory compounds in Saccharomyces cerevisiae under both aerobic and anaerobic growth conditions. Data indicate that furfural is solely converted to furoic acid during respiratory growth. Furthermore, furfural affects fluxes mediating energy metabolism as indicated by a 50% increase in the respiratory activity durign furfural conversion.

Sweden, Energy metabolism, Bioenergetics, Cell culture, Tissue culture, Furfural

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Influence of the nitrogen source on Saccharomyces cerevisiae anaerobic growth and product formation

Article Abstract:

The type of nitrogen source affects the products formed by Saccharomyces cerevisiae under anaerobic conditions. The formation of glycerol decreases while that of ethanol increases when amino acids are added to the medium. In the presence of different nitrogen sources, the biomass composition is unchanged, despite changes in the product. Glutamic acid is important in the biosynthesis of amino acids and therefore appropriate as a nitrogen source.

Saccharomyces

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Efficient production of L-lactic acid from xylose by Pichia stipitis

Article Abstract:

A genetically engineered yeast strain called Pichia stipitis was used for the expression of L-lactate dehydrogenase (LDH) from lactobacillus with xylose as the carbon base in the production of lactic acid. This process proved to be efficient and cheaper over the lactate production from ethanol.

Genetically modified organisms

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