Sökning: "Polysaccharides"

Visar resultat 1 - 5 av 199 avhandlingar innehållade ordet Polysaccharides.

  1. 1. Spruce Bark Polysaccharides : Extraction, Characterization and Valorization

    Författare :Myriam Le Normand; Monica Ek; Carlos Pascoal Neto; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  3. 2. Studies on Polysaccharides from some Gram-Negative Bacteria

    Författare :Kurt Samuelsson; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; bacteria; chemical methods; food infections; polysaccharides; salmonella; Information Systems; Informatik;

    Sammanfattning : In this survey structural studies on some polysaccharides isolated from the families of Enterobachteriaceae (Klebsiella and Salmonella) and Parvobacteriaceae (Yersinia) will be discussed. The occurence of some rare or not earlier reported deoxysugars is demonstrated, namely, 6-deoxy-D-manno-heptose, 3-deoxy-L-glycero-pentulosonic acid and five of the isomers of 3,6-dideoxy-hexoses. LÄS MER

  4. 3. Structural and Conformational Studies of Oligo- and Polysaccharides

    Författare :Mona Zaccheus; Göran Widmalm; Christina De Castro; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; NMR spectroscopy; structural analysis; conformational analysis; carbohydrates; polysaccharides; organisk kemi; Organic Chemistry;

    Sammanfattning : The focus of this thesis is to examine the structural properties of polysaccharides produced by bacteria, as well as the dynamic and conformational behavior of a synthetically derived oligosaccharide.The primary structures of the O-polysaccharide repeating units of four different Escherichia coli (E. LÄS MER

  5. 4. Marine biogenic polysaccharides as a potential source of aerosol in the high Arctic : Towards a link between marine biology and cloud formation

    Författare :Qiuju Gao; Caroline Leck; Ulrika Nilsson; Eric Saltzman; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Polysaccharides; Biogenic polymer microgels; Arctic Ocean; LC MS MS; Surface microlayer; Marine aerosol particles; Remote marine cloud condensation nuclei; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

    Sammanfattning : Primary marine aerosol particles containing biogenic polymer microgels play a potential role for cloud formation in the pristine high Arctic summer. One of the major sources of the polymer gels in Arctic aerosol was suggested to be the surface water and more specifically, the surface microlayer (SML) of the open leads within the perennial sea ice as a result of bubble bursting at the air-sea interface. LÄS MER

  7. 5. Degradation of wood polysaccharides by fungal glycoside hydrolases

    Författare :Torny Eriksson; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Penicillium brasilianum; ethanol; cellulose; wood polysaccharides; Man5A hemicellulase; cellulase; endoglucanase; cellobiohydrolase; Cel7B; Cel7A; Trichoderma reesei; glycoside hydrolase; Plant biochemistry; Växtbiokemi;

    Sammanfattning : The enzymatic degradation of wood polysaccharides such as cellulose and hemicellulose is an important process in nature. In addition, cellulases and hemicellulases can be used in industrial applications. Fuel ethanol can potentially be produced from wood by enzymatic hydrolysis of cellulose followed by yeast fermentation of the formed sugars. LÄS MER