Search for dissertations about: "esterase"

Showing result 1 - 5 of 58 swedish dissertations containing the word esterase.

2. 1. Hydrolases as Catalysts for Green Chemistry and Industrial Applications - Esterase, Lipase and Phytase

   Author : Yasser Gaber; Bioteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HPLC-EAT; sustainable environment; mutation; metallo-enzyme; phytate; b-propeller; biodegraqdable; metrics; green chemistry; Novozym 435; CalB; solvent-free; kinetic resolution; Biocatalysis; rational design; PLE; esterase; clopidogrel; enantioselectivity;

   Abstract : 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. READ MORE

4. 2. Feruloyl esterases - Evaluation of their potential for biotechnological applications

   Author : Cyrielle Bonzom; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multi-domain enzyme; acetyl esterase; enzyme immobilization; N-glycosylation; carbohydrate active enzyme family 1; acetyl xylan esterase; heterologous production; polysaccharide utilization loci; enzyme stability; feruloyl esterase;

   Abstract : Owing to the current efforts to find sustainable alternatives to petrochemical based industries and technologies, enzymatic degradation and valorization of plant biomass has been attracting interest. Due to the complexity of plant biomass, an array of enzymes is required to hydrolyze it, including esterases. READ MORE

5. 3. On Catalytic Mechanisms for Rational Enzyme Design Strategies

   Author : Charlotte Kürten; Per-Olof Syrén; Rudolf Allemann; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; catalytic mechanisms; terpene cyclase; triterpene cyclase; solvent dynamics; protein hydration; thermodynamics; quantum tunneling; polycyclization; natural compounds; ? ?-hydrolase; esterase; amidase; enzyme engineering; biocatalysis; Bioteknologi; Biotechnology;

   Abstract : Enzymes enable life by promoting chemical reactions that govern the metabolism of all living organisms. As green catalysts, they have been extensively used in industry. However, to reach their full potential, engineering is often required, which can benefit from a detailed understanding of the underlying reaction mechanism. READ MORE

6. 4. Enzyme substrate solvent interactions : a case study on serine hydrolases

   Author : Linda Fransson; Karl Hult; Jürgen Pleiss; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lipase; esterase; specificity; Bioengineering; Bioteknik;

   Abstract : Reaction rates and selectivities were measured for transacylation of fatty acid esters in solvents catalysed by Candida antarctica lipase B and by cutinase from Humicola insolens. With these enzymes classical water-based enzymology can be expanded to many different solvents allowing large variations in interaction energies between the enzymes, the substrates and the surrounding. READ MORE

7. 5. Rational engineering of esterases for improved amidase specificity in amide synthesis and hydrolysis

   Author : Peter Hendil-Forssell; Mats Martinelle; Romas J. Kazlauskas; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Amidase; Biocatalysis; Enzyme; Esterase; Enzyme engineering; Lipase; Substrate specificity; Bioteknologi; Biotechnology;

   Abstract : Biocatalysis is an ever evolving field that uses enzymes or microorganisms for chemical synthesis. By utilizing enzymes that generally have evolved for specific reactions under mild conditions and temperatures, biocatalysis can be a more environmentally friendly option compared to traditional chemistry. READ MORE