Sökning: "cyclodextrins"
Visar resultat 1 - 5 av 19 avhandlingar innehållade ordet cyclodextrins.
1. Investigations of New Biomimetic Transamination Systems and Inclusion Complexation with Cyclodextrins
Sammanfattning : Two new transamination systems are described. The first example is a dibenzo[a,d]- cycloheptene containing system, designed to accomplish a [1,3]-hydride transfer. Several catalysts have been examined for this purpose. tris-Pentafluorophenyl borane was found to be the most efficient catalyst. LÄS MER
2. Conformational Dynamics of Carbohydrates Studied by NMR Spectroscopy and Molecular Simulations
Sammanfattning : Carbohydrates play important roles in biological processes. Their function is closely related to their conformation. In this thesis, conformational studies of carbohydrates by NMR spectroscopy and molecular dynamics computer simulations are described. LÄS MER
3. Sensitivity and selectivity studies in capillary electrophoresis
Sammanfattning : Capillary electrophoresis is characterised by high separation efficiency, applicability to a wide range of compounds, small sample and solvent consumption and simple instrumentation. To improve sensitivity using on-line absorbance detectors, which are hampered by the short optical path length, sample volumes in the microlitre range were concentrated to nanolitre volumes either off-line or on-line. LÄS MER
4. An Alkaline Active Cyclodextrin Glycosyltransferase from an Alkaliphilic Bacillus agaradhaerens
Sammanfattning : Soda lakes represent the most stable naturally-occurring alkaline environments on Earth and harbour a diverse population of alkaliphiles. Alkaliphilic microorganisms have attracted a great interest due to their ability to produce extracellular enzymes that are active and stable at high pH values. LÄS MER
5. Evaluation of modified cyclodextrins for chiral separations in gas chromatography and capillary electrophoresis
Sammanfattning : ABSTRACTAn evaluation of different derivatized cyclodextrins as chiral selectors for enantiomer separations has been performed with capillary electrophoresis and gas chromatography. Using gas chromatography, resolution of the enantiomers of atropisomeric PCB congeners, o,p-DDT and o,p-DDD was attempted on columns containing a mix of chiral selectors. LÄS MER