Search for dissertations about: "lipase catalysis"

Showing result 1 - 5 of 45 swedish dissertations containing the words lipase catalysis.

  2. 1. Enthalpy and Entropy in Enzyme Catalysis : A Study of Lipase Enantioselectivity

    Author : Jenny Ottosson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biocatalysis; enzyme catalysis; Candida antarctica lipase B; enantioselectivity; enthalpy; entropy; CALB; enantiomeric ratio; Bioengineering; Bioteknik;

    Abstract : Biocatalysis has become a popular technique in organic synthesis due to high activity and selectivity of enzyme catalyzed reactions. Enantioselectivity is a particularly attractive enzyme property, which is utilized for the production of enantiopure substances. READ MORE

  4. 2. Ruthenium-catalyzed redox reactions and lipase-catalyzed asymmetric transformations of alcohols

    Author : Michaela Edin; Jan-E. Bäckvall; Manfred T. Reetz; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ruthenium; lipase; catalysis; alcohols; diols; Chemistry; Kemi;

    Abstract : The major part of this thesis describes the synthesis of enantiopure alcohols and diols by combining ruthenium-catalyzed redox reactions that lead to racemization or epimerization and lipase-catalyzed asymmetric trans-formations in one-pot.A mechanistic study of the unexpected facile formation of meso-diacetate products found in enzyme-catalyzed acetylations of alkanediols with Candida antarctica lipase B (CALB) was first performed. READ MORE

  5. 3. Lipase Specificity and Selectivity : Engineering, Kinetics and Applied Catalysis

    Author : Mohamad Takwa; Karl Hult; Bernhard Hauer; KTH; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Biokemi;

    Abstract : The specificity and selectivity of the enzyme Candida antarctica lipase B (CALB) were studiedfor several substrates and applications.With help of molecular modeling, the active site of CALB was redesigned for the ring openingpolymerization of D,D‐lactide. READ MORE

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

    Author : Sunil Sabbani; Mittuniversitetet; []
    Keywords : 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;

    Abstract : .... READ MORE

  7. 5. Lipase-Catalyzed Syntheses of Telechelic Polyesters

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

    Abstract : 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. READ MORE