Search for dissertations about: "Xylose"

Showing result 6 - 10 of 99 swedish dissertations containing the word Xylose.

  2. 6. Ethanol production by recombinant and natural xylose-utilising yeasts

    Author : Anna Eliasson; Teknisk mikrobiologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lignocellulose; electron transport; redox balance; Pichia stipitis; Saccharomyces cerevisiae; ethanol; xylose; physiology; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Abstract : The xylose-fermenting capacity of recombinant Saccharomyces cerevisiae carrying XYL1 and XYL2 from Pichia stipitis, which encode xylose reductase (XR) and xylitol dehydrogenase (XDH), respectively, is poor due to high xylitol formation. Whereas, P. READ MORE

  4. 7. Engineering xylose and arabinose metabolism in recombinant Saccharomyces cerevisiae

    Author : Kaisa Karhumaa; Teknisk mikrobiologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; virologi; bakteriologi; mycology; Mikrobiologi; bacteriology; Saccharomyces cerevisiae ; arabinose; xylose; fermentation; lignocellulose; yeast; mykologi; Biochemical technology; Biokemisk teknik; virology; Microbiology; ethanol;

    Abstract : Utilization of all sugars in lignocellulose hydrolysates is a prerequisite for economically feasible bioethanol production. The yeast commonly used for industrial ethanol production, Saccharomyces cerevisiae, is naturally unable to utilize pentose sugars xylose and arabinose, which constitute a large fraction of many lignocellulosic materials. READ MORE

  5. 8. Dicarboxylic acids from xylose, using natural and engineered hosts

    Author : Henrik Almqvist; Avdelningen för kemiteknik; []
    Keywords : Xylose; Dicarboxylic Acids; Biorefineries; Actinobacillus succinogenes; Basfia succiniciproducens; Saccharomyces cerevisiae; Caulobacter crescentus;

    Abstract : Chemical building blocks for plastics can be produced from renewable biomass feedstocks using microbial production organisms, such as yeast or bacteria, in a biorefinery. One class of chemical building blocks that are suitable for production of biobased and biodegradable plastics are dicarboxylic acids, e.g. succinic acid. READ MORE

  6. 9. Physiological Engineering of Xylose Utilisation by Recombinant Saccharomyces cerevisiae

    Author : Nina Quednau Meinander; Teknisk mikrobiologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; protein burden; physiology; fed-batch fermentation; chemostat; recombinant Saccharomyces cerevisiae; ethanol; xylose; xylitol; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Abstract : Xylitol production by recombinant, XYL1-expressing Saccharomyces cerevisiae was investigated in fed-batch fermentation using different cosubstrates for growth, and generation of reduced cofactors and maintenance energy. Xylose was converted into xylitol with 1:1 yield. READ MORE

  7. 10. Metabolic Engineering of Xylose-Utilising Saccharomyces cerevisiae Strains. A Closer Look at Recombinant Strains Based on the Xylose Reductase-Xylitol Dehydrogenase Pathway

    Author : Marie Jeppsson; Teknisk mikrobiologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi; microarrays; cofactors; XK; XDH; XR; lignocellulose; xylose; ethanol; Saccharomyces cerevisiae; yeast;

    Abstract : Saccharomyces cerevisiae produces ethanol efficiently from the hexose sugars in lignocellulose hydrolysates, but it can not utilise pentose sugars such as xylose and arabinose. Stable xylose-utilising S. READ MORE