Sökning: "Pichia stipitis"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Pichia stipitis.

  1. 1. Ethanol production by recombinant and natural xylose-utilising yeasts

    Författare :Anna Eliasson; Teknisk mikrobiologi; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 2. On-line Monitoring Techniques for the Study of Yeast Physiology. Some Studies on the Yeasts Pichia stipitis and Saccharomyces cerevisiae

    Författare :Gunnar Lidén; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : On-line monitoring techniques have been used with the goal of optimizing fermentation processes involving the yeasts Saccharomyces cerevisiae (Baker's yeast) and Pichia stipitis (a xylose fermenting yeast), and a highly equipped fermentor system has been developed for these studies. The fed-batch growth of S. LÄS MER

  4. 3. Metabolic Engineering of Central Carbon Metabolism in Saccharomyces cerevisiae The contribution of systems biology to physiological studies

    Författare :Marta Papini; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fermentation technology; Metabolic engineering; RNA-sequencing; Saccharomyces cerevisiae; DNA microarrays; 13Cbased flux analysis; system biology; Scheffersomyces stipitis;

    Sammanfattning : Saccharomyces cerevisiae is one of the most well characterized yeast of large industrial interest due to several attractivefeatures such as its capability to efficiently convert glucose into ethanol and carbon dioxide at high flux, its amenabilityto genetic modification and the presence of extensive knowledge databases. For these reasons, it is often considered asuitable cell factory for the production of different classes of compounds. LÄS MER

  5. 4. Redox balancing in recombinant strains of Saccharomyces cerevisiae

    Författare :Mikael Anderlund; Teknisk mikrobiologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; xylose isomerase; xylitol dehydrogenase; xylose reductase; glycerol; xylitol; xylose; E. coli; A. vinelandii; T. thermophilus; S. cerevisiae; P. stipitis; transhydrogenase.; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Sammanfattning : In metabolically engineered Saccharomyces cerevisiae expressing Pichia stipitis XYL1 and XYL2 genes, encoding xylose reductase (XR) and xylitol dehydrogenase (XDH), respectively, xylitol is excreted as the major product during anaerobic xylose fermentation and only low yields of ethanol are produced. This has been interpreted as a result of the dual cofactor dependence of XR and the exclusive use of NAD+ by XDH. LÄS MER

  7. 5. Bioethanol Production from Lignocellulosic Materials: Some studies on Sugarcane Bagasse and Paja Brava

    Författare :Cristhian Carrasco; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Paja Brava Sugarcane Bagasse Saccharomyces cerevisiae Pichia stipitis;

    Sammanfattning : The commercial feasibility of ethanol production from biomass is dependent on the availability of lignocellulose in large amounts at low cost. Various kinds of agricultural residues are of interest, due to the fact that these feedstocks have well-established cultivation procedures already in place, as well as technology for harvest and transportation. LÄS MER