Sökning: "lipase-catalysis"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet lipase-catalysis.

  1. 1. Regioselective acylation of carbohydrates and polyester synthesis by lipase catalysis

    Författare :Armando Córdova; KTH; []
    Nyckelord :;

    Sammanfattning : The lipases' high regio- and enantioselectivity, activity inorganic solvent and environmentally compatible reactionconditions have made lipase-catalysis based synthesis anattractive alternative to conventional synthetic methods inorganic chernistry and a new synthetic tool in polymerchemistry.The regioselective acylation of methy1 glycopyranosides wereinvestigated using several serine hydrolases. LÄS MER

  3. 2. Lipase-Catalyzed Syntheses of Telechelic Polyesters

    Författare :Magnus Eriksson; Karl Hult; Mats Martinelle; Sergio Riva; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Candida antarctica lipase B; lipase-catalysis; polymerization; telechelic; functional polyesters; ring-opening polymerization; polycondensation.; Biochemistry; Biokemi;

    Sammanfattning : Telechelic polyesters have successfully been synthesized with lipase-catalyzed polymerization. The produced telechelics had a high degree of di­functionalization, high purity (requiring little or no workup) and controlled degree of polymerization. The syntheses were performed in one-pot one-step reaction systems. LÄS MER

  4. 3. Influence of immobilisation and reaction conditions on lipase enantioselectivity : resolution of alkyl substituted carboxylic acids and primary alcohols

    Författare :Sunil Sabbani; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lipase; 3-Alkyl-3-arylpropanols; enantioselectivity; optimization of lipase catalysis; water activity; Accurel; immobilization; particle size and amount of lipase; Chemistry; Kemi;

    Sammanfattning : .... LÄS MER

  5. 4. Lipases at interfaces

    Författare :Pedro Reis; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hydrolysis.; fat; microenvironment; depletion; surfactant; interface; Lipase; modulation; digestion; synthesis;

    Sammanfattning : Lipases are acyl hydrolases that play a key role in fat digestion by cleaving long-chain triglycerides into polar lipids. Due to an opposite polarity between the enzyme (is hydrophilic) and their substrates (are lipophilic), the lipase reaction occurs at the interface between the aqueous and the oil phases. LÄS MER

  7. 5. Molecular modeling on reactions with lipases and related catalysts

    Författare :Fredrik Haeffner; KTH; []
    Nyckelord :;

    Sammanfattning : The first part of this thesis discusses theories and methodsin the field of molecular modeling. A brief introduction to thequantum chemistry methods and the forte field methods is given. LÄS MER