Sökning: "Esterification"

Visar resultat 21 - 25 av 67 avhandlingar innehållade ordet Esterification.

1. 21. Improving Productivity and Enzyme Stability Through Process Design: Lipase-catalysed Synthesis of Epoxides and Esters

   Författare :Anna Hagström; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Interest in sustainable development has increased throughout society during the past decades, and the chemical industry is no exception. The appeal for renewable raw materials has consequently increased and has paved the way for the implementation of industrial biotechnology. LÄS MER

3. 22. LIPASES AND PHOSPHOLIPASES IN PHOSPHOLIPID SYNTHESIS

   Författare :Carmen Virto; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transphosphatidylation; acylation; vinyl ester; Phospholipid synthesis; lysophospholipid; kinetics; Biotechnology; Bioteknik;

   Sammanfattning : The synthesis of phospholipids with defined fatty acid and polar head composition catalysed by lipases and phospholipases was investigated. Lipases from Rhizopus arrhizus and Candida antarctica were used for the direct acylation of DL-a-glycerophosphate and L-a-glycerophosphatidylcholine, with different fatty acids. LÄS MER

4. 23. Palladium(0)-Catalyzed Synthesis of Spirocycles and Supercritical Chemistry using a Resistively Heated Flow Reactor

   Författare :Ahmed Adeyemi; Mats Larhed; Luke R. Odell; Kenneth Wärnmark; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Continuous Flow; Resistive heating; Supercritical fluids; high-temperature synthesis; Mizoroki-Heck reaction; Spirooxindoles; Spiroethers; Spirobenzofuranes; Unnatural Amino Acids;

   Sammanfattning : This doctoral thesis focusses on an effective and selective approach to the synthesis of spirocycles using palladium(0)-catalyzed Mizoroki-Heck reactions. In addition, selective and efficient chemistry was highlighted by the design and evaluation of a novel resistively heated system for continuous flow (CF) synthesis for high-temperature and high-pressure applications. LÄS MER

5. 24. Surface Modification of Nanocellulose towards Composite Applications

   Författare :Assya Boujemaoui; Anna Carlmark Malkoch; Eva Malmström Jonsson; Julien Bras; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanocellulose; surface modification; functionalization; composites; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : Nanocelluloses have attracted great interest during recent decades owing to their renewability, abundancy and remarkable physical and mechanical properties. The aim of this work was to investigate new strategies for surface modification and functionalization of nanocelluloses and their subsequent incorporation in polymer-host matrices. LÄS MER

7. 25. Regulation of the hepatic ACAT2 expression and roles of HNF1alhpa and HNF4alpha in cholesterol metabolism

   Författare :Camilla Pramfalk; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :ACAT2; HNF; MODY; NPC1L1; SREBP; cholesterol metabolism;

   Sammanfattning : Acyl-Coenzyme A:cholesterol acyltransferases (ACATs) 1 and 2 are integral membrane proteins located in rough endoplasmatic reticulum that catalyzes the formation of cholesteryl esters (CEs) from cholesterol and long-chain fatty acids. ACAT1 is present in most tissues, whereas ACAT2 is confined to enterocytes and hepatocytes. LÄS MER