Sökning: "oxygen-limited"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet oxygen-limited.

  1. 1. Vitreoscilla hemoglobin. In vitro mutagenesis and transcript profiling to improve its biotechnological usefulness

    Författare :Charlotte Andersson; Tillämpad biokemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biochemical technology; Biokemisk teknik; gene expression analysis; transcript profiling; microarray; DNA chips; microaerobic; hypoxia; oxygen-limited; bacterial hemoglobin; Escherichia coli; Vitreoscilla hemoglobin VHb ;

    Sammanfattning : Vitreoscilla is an obligate aerobic bacterium found in oxygen-poor environments such as stagnant ponds and decaying vegetable matter. Vitreoscilla induces the production of a homodimeric hemoglobin (VHb) when subjected to oxygen-limiting conditions. LÄS MER

  3. 2. Production and engineering of a xyloglucan endo-transglycosylase from Populus tremula x tremuloides

    Författare :Maria Henriksson; Tuula Teeri; KTH; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; xyloglucan endo-transglycosylase; retaining glycoside hydrolase; glycosynthase; Pichia pastoris; fed-batch fermentation; expanded-bed adsorption; Plant biotechnology; Växtbioteknik;

    Sammanfattning : The aim of this work was to develop a production process for the enzyme xyloglucan endo-transglycosylase from Populus tremula x tremuloides (PttXET16-34). The natural transglycosylating activity of this enzyme has previously been employed in a XET-Technology. LÄS MER

  4. 3. Ribosomes and subunits from Escherichia coli studied by asymmetrical flow field-flow fractionation

    Författare :Mikael Nilsson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; metabolic engineering; VHb; Vitreoscilla hemoglobin; E. coli; Escherichia coli; separation; subunits; ribosomes; Asymmetrical flow field-flow fractionation; flow FFF; optimization; biotechnological production; Analytical chemistry; Analytisk kemi;

    Sammanfattning : In this thesis asymmetrical flow field-flow fractionation (FFF) separations of ribosomes and subunits have been studied. Ribosomal material was prepared from Escherichia coli (E. coli) cells and analyzed by the size separation technique. LÄS MER

  5. 4. Dekkera bruxellensis, a non-conventional ethanol production yeast : studies on physiology, transcriptomics and interactions with industrial microbial isolates

    Författare :Ievgeniia Tiukova; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Dekkera bruxellensis has been shown to outcompete an initial inoculum of Saccharomyces cerevisiae in several ethanol production plants, which nevertheless had a high efficiency in one of the monitored processes. Co-occurrence of D. bruxellensis with lactic acid bacteria (LAB) Lactobacillus vini has been observed. LÄS MER

  7. 5. Vitreoscilla Haemoglobin. Genetic Fusions and Metabolic Characterisation

    Författare :Viktoria Roos; Tillämpad biokemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; Metabolism; Biokemi; metabolism; osmotic stress; transcript profiling; DNA microarrays; random elongation mutagenesis; directed evolution; mRNA structure; Vitreoscilla haemoglobin VHb ; Escherichia coli; salt stress.;

    Sammanfattning : Vitreoscilla is an obligate aerobic bacterium living in oxygen-poor environments such as stagnant ponds and decaying vegetable matter. Vitreoscilla expresses a homodimeric haemoglobin (VHb) when subjected to oxygen-limited conditions. LÄS MER