Sökning: "Alcoholysis"
Hittade 5 avhandlingar innehållade ordet Alcoholysis.
1. Transglycosylation catalyzed by β-mannanases : Molecular aspects relevant for enzymatic synthesis
Sammanfattning : β-Mannanases are a major type of enzyme involved in the hydrolysis and modification of β-mannans, a hemicellulose present in high amounts in e.g. softwoods such as spruce. The β-mannanases studied in this thesis belong to glycoside hydrolase (GH) families GH5 and GH26. LÄS MER
2. Determination of Fat-Soluble Vitamins in Foods Based on Supercritical Fluid Extraction
Sammanfattning : Sample clean-up methodologies based on supercritical fluid extraction (SFE) have been developed for determination of fat-soluble vitamins in foods. This thesis focuses on method development, stressing important issues concerning sample pre-treatment, extraction conditions and collection parameters. LÄS MER
3. Enzymatic Synthesis of Alkyl Glycosides. New Applications for Glycoside Hydrolases
Sammanfattning : The environmental problems caused by human interventions, such as the consumption of non-renewable resources and the emission of greenhouse gases are well-recognised. Calls have been made for immediate measures to develop more sustainable society worldwide. LÄS MER
4. Lipase-Catalysed Lipid Modifications in Supercritical Carbon Dioxide
Sammanfattning : The production of ethyl esters (EE) from ethanol and cod-liver oil by an immobilised lipase in supercritical carbon dioxide (SCCO2) is described. This reaction results in a complex mixture of lipid components consisting of triglycerides, diglycerides, monoglycerides and ethyl esters. LÄS MER
5. Exploring thermostable glycoside hydrolases: Amylases and beta-glucosidases
Sammanfattning : Two putative cyclodextrinases (CDases) were amplified from two moderate thermophiles isolated in Iceland: Anoxybacillus flavithermus and Laceyella sacchari. They were cloned, expressed and characterized. The expression of the former was optimized in E. LÄS MER