Sökning: "solvent-free"
Visar resultat 1 - 5 av 34 avhandlingar innehållade ordet solvent-free.
1. Synthesis of Non-Natural Aromatic Amino Acids Derivatives Solvent-free reactions-Versatile building blocks-Galectin inhibitors
Sammanfattning : This thesis deals with three topics concerning the synthesis of non-natural also known as unnatural amino acid derivatives. In the first, solvent-free reaction conditions for the Heck reaction were developed that were superior to previous conditions because the reaction time could be reduced and the work-up procedure simplified. LÄS MER
2. Non-porous membrane extractions in contemporary analysis
Sammanfattning : To meet the desirable characteristic for sample preparation in contemporary, i. e. automation, high enrichment, clean-up, selectivity and essential solvent free techniques, the use of non-porous membrane extraction techniques is addressed. LÄS MER
3. Hydrolases as Catalysts for Green Chemistry and Industrial Applications - Esterase, Lipase and Phytase
Sammanfattning : The use of enzymes in industrial applications has been recognised for providing clean processes with minimal impact on the environment. This thesis presents studies on engineering of enzymes and enzyme-based processes in the light of green chemistry and environmental sustainability, and focuses on three hydrolases: esterase, lipase and phytase. LÄS MER
4. Covalent Surface Modification of Degradable Polymers for Increased Biocompatibility
Sammanfattning : Degradable polymers have gained an increased attention in the field of biomedical applications over the past decades, for example in tissue engineering. One way of improving the biocompatibility of these polymers is by chemical surface modification, however the risk of degradation during the modification procedure is a limiting factor. LÄS MER
5. New directions in non-porous membrane extraction
Sammanfattning : Complex biological and environmental samples require a high degree of selectivity in order to determine components therein. Sensitivity measures, such as analyte pre-concentration are often required for assessing composition quantitatively. LÄS MER