Sökning: "polysackarider"

Visar resultat 1 - 5 av 31 avhandlingar innehållade ordet polysackarider.

  1. 1. Exploring glycoside hydrolase family 5 (GH5) enzymes

    Författare :Yang Wang; Ines Ezcurra; Henrik Aspeborg; Henrik Stålbrand; Torkel Berglund; KTH; []
    Nyckelord :GH5; glycoside hydrolase; subfamily classification; mannans; polysaccharides; mannanases; cell wall; GH5; glykosidhydrolas; subfamiljklassificering; mannaner; polysackarider; mannanaser; cellvägg; SRA - Molecular Bioscience; SRA - Molekylär biovetenskap;

    Sammanfattning : In 1990, the classification of carbohydrate-active enzymes (CAZymes) was introduced by the scientist Bernard Henrissat. According to sequence similarity, these enzymes were separated into families with conserved structures and reaction mechanisms. LÄS MER

  3. 2. Functional and Renewable Galactoglucomannan-based Hydrogels

    Författare :Jens Voepel; Ann-Christine Albertsson; Ulrica Edlund; Gunnar Henriksson; Margaretha Söderqvist; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polysaccharides; hydrogels; swelling; crosslinking; hemicellulose; release; polysackarider; hemicellulosa; hydrogel; läkemedelsfrisättning; förnyelsebar; tvärbindning.; Functional materials; Funktionella material;

    Sammanfattning : Polysaccharides represent an important resource for a variety of products, from food via fuel supply to functional materials of every kind. Here they are, due to their natural diversity found in many special applications, e.g. in the biomedical sector. LÄS MER

  4. 3. Structure and Dynamics of Hydrated Biopolymers

    Författare :Poornima Ramamohan; Jakob Wohlert; Istvan Furo; Fritjof Nilsson; KTH; []
    Nyckelord :Hydrated Polysaccharides; Molecular Dynamics Simulations; Structure-Function Properties; Convergence of Equilibrium Timescales; Chemical Heterogeneity; Hydrerade polysackarider; molekylära dynamiksimuleringar; struktur- funktionsegenskaper; konvergens av jämviktstidskalor; kemisk heterogenitet; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Hydrated polysaccharide systems primarily using xylans along with mutans and alternans were studied using long atomistic simulations over a few microseconds to analyse structure-function relationships and nanoscale interactions with moisture. The influence of various structural and chemical factors such as alignment, nature of glycosidic linkage, effect of moisture / chemical substitutions was explored with a focus on structure-dynamics correlations to aid in the effective functionalisation of biomaterials for the development of a green, circular bioeconomy. LÄS MER

  5. 4. Structure and Function of Beta-Mannanases from Glycoside Hydrolase Clan A. A Study of Hemicellulases from Microbes and a Mollusc

    Författare :Lars Anderson; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Proteiner; enzymologi; enzymology; Proteins; subsite organisation; transglycosylation; enzyme kinetics; beta-mannanase; hemicellulose;

    Sammanfattning : Hemicellulose is the second most abundant group of renewable polysaccharides. Mannans can be found as the major hemicellulose in softwood and as storage polysaccharides in a range of plants. In this work, structural and functional characterisations of family 5 and 26 endo-1,4-b-mannanases (b-mannanases) have been performed. LÄS MER

  7. 5. Polysaccharide-based wood adhesives

    Författare :Tijana Todorovic; Eva Malmström; Linda Fogelström; Johannes Konnerth; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : It is highly desirable to increase the use of renewable resources and reduce fossil-dependence due to sustainability concerns. As a consequence, it is expected that the use of the wood-based materials will increase in the future. Therefore, adhesives will have an important role since they allow for the use of lower-quality and recycled wood. LÄS MER