Search for dissertations about: "xylanase"

Showing result 1 - 5 of 24 swedish dissertations containing the word xylanase.

  1. 1. An Alkaline Active Endo-Xylanase from Bacillus halodurans S7:Molecular and Structural Aspects

    University dissertation from Biotechnology, Lund University

    Author : Gashaw Mamo; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioteknik; Biotechnology; Biokemisk teknik; mutagensis; Biochemical technology; xylanase structure; glycoside hydrolase family 10 cloning; Bacillus halodurans; Xylanase; alkaliphiles;

    Abstract : A strain of an alkaliphilic bacterium Bacillus halodurans was isolated from a water sample in Lake Shalla, a soda lake in the Ethiopian Rift Valley. From the culture of this isolate, B. halodurans S7, a xylanase which is active in a wide range of pH, with an optimum at about 9-9.5 was purified. READ MORE

  2. 2. Thermostable Xylanases from Rhodothermus marinus

    University dissertation from Biotechnology, Lund University

    Author : Leif Dahlberg; [1996]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; characterization; application; xylanolytic bacteria; thermophile; thermostability; purification; thermostable xylanase; xylosidase; Rhodothermus marinus; xylanase; gene sequence; Biotechnology; Bioteknik;

    Abstract : Abstract Hot springs in Iceland can serve as sources of thermophilic, xylanolytic bacteria secreting very thermostable xylanolytic enzymes. The aerobic, thermophilic bacteria Rhodothermus marinus secretes multiple xylanases and xylosidases. One of the xylanases was purified to electrophoretic homogeneity and was characterized. READ MORE

  3. 3. Glycoside hydrolases from Rhodothermus marinus Modular organisation and structure-function relationships

    University dissertation from Maher Abou Hachem, Kämnärsvägen 13, E105, 226 46 Lund, Sweden

    Author : Maher Abou-Hachem; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; calcium-binding; modular; endoglucanase; thermostable; CBM; xylanase; Biotechnology; Bioteknik;

    Abstract : The thermophilic bacterium Rhodothermus marinus produces several thermostable glycoside hydrolases. The studies presented in this thesis were performed on two enzymes, belonging to glycoside hydrolase families 10 and 12, produced by this microorganism. The family 10 xylanase, Xyn10A, is modular in architecture consisting of five domains or modules. READ MORE

  4. 4. Trametes versicolor as biodegrader and biocatalyst when using lignocellulose for ethanol production

    University dissertation from Umeå : Umeå Universitet

    Author : Marie Holmgren; Umeå universitet.; Umeå universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Lignocellulose; 5-carbon; 6-carbon; Trametes versicolor; xylose reductase; xylitol dehydrogenase; xylulokinase; phenolics; levulinic acid; HMF; furfural; biodegrader; biocatalyst; pretreatment; xylanase; beta-glucosidase;

    Abstract : Energy consumption has increased rapidly during the last century due to population growth and greater industrialization. Lignocellulosic-based biofuels are being developed as alternatives to fossil fuels. For many years the question of how 5-carbon sugars in biomass are utilized in nature has been a vexed one. READ MORE

  5. 5. Xylan degradation by the thermophilic bacterium Rhodothermus marinus. Characterization and function of a thermostable xylanase

    University dissertation from Biotechnology, Lund University

    Author : Eva Nordberg Karlsson; [1999]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fed-batch cultivation; kraft pulp; bleaching; glycosyl hydrolase family 10; recombinant xylanase; polysaccharide binding domain; Biotechnology; Bioteknik;

    Abstract : A gene encoding a multidomain xylanase from the thermophilic bacterium Rhodothermus marinus has been cloned, sequenced and produced in Escherichia coli . The gene product was found to be a 109 kDa protein consisting of five domains. READ MORE