Search for dissertations about: "pentoses"

Showing result 1 - 5 of 14 swedish dissertations containing the word pentoses.

2. 1. Industrial challenges in the use of Saccharomyces cerevisiae for ethanolic fermentation of lignocellulosic biomass

   Author : Violeta Sanchez Nogue; Teknisk mikrobiologi; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Saccharomyces cerevisiae; Pentose fermentation; Evolutionary engineering; Acetic acid; pH; Short-term adaptation; Resident yeast; Spent sulphite liquor fermentation; Dekkera bruxellensis; Lactobacillus pentosus.;

   Abstract : The sustainable production of ethanol from lignocellulosic biomass requires the combination of efficient hydrolysis and complete fermentation of all the monomeric sugars present in the raw material. The present work was aimed at tackling some of the major challenges that will be encountered in commercial-scale ethanol production using Baker’s yeast, Saccharomyces cerevisiae, the preferred microorganism for the fermentation step. READ MORE

4. 2. Design of kinetic models for assessment of critical aspects in bioprocess development : A case study of biohydrogen

   Author : Johanna Björkmalm; Teknisk mikrobiologi; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; kinetic models; biohydrogen; Caldicellulosiruptor; substrate; diauxic; inhibition; osmotolerance;

   Abstract : The world faces major climate challenges and extensive efforts need to be taken to combat this issue. Replacing fossil-derived fuels and chemicals with renewables are one important step on the way. Hydrogen has a great potential as a renewable energy carrier for the transport sector and as a green chemical for the industry. READ MORE

5. 3. Caloramator Boliviensis, a New Thermoanaerobe with Interesting Metabolic Properties

   Author : Carla Crespo; Bioteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Caloramator boliviensis; catabolic flexibility; ethanol production; butyrate-based lactate; wide substrate utilization range; metabolic shift; carbon and electron balance; functional genome annotation;

   Abstract : A novel ethanol-producing thermoanaerobe Caloramator boliviensis 45BT (=DSM 22065T, =CCUG 57396T) was isolated from a hot spring of the Bolivian highlands. C. READ MORE

6. 4. Fermentation of undetoxified dilute acid lignocellulose hydrolysate for fuel ethanol production

   Author : Tomas Brandberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydrolysate; lignocellulose; Saccharomyces cerevisiae; nitrogen limitation; microaerobic conditions; cell recirculation; continuous fermentation; Mucor indicus; ethanol; cell retention;

   Abstract : Important aspects of ethanol production from undetoxified dilute acid lignocellulose hydrolysate are covered in this thesis, which primarily focuses on the use of Saccharomyces cerevisiae (Baker's yeast) as the biocatalyst. Nine different strains of S. READ MORE

7. 5. Structure-Function Studies of Enzymes from Ribose Metabolism

   Author : C. Evalena Andersson; Sherry Mowbray; Phil Evans; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; activation; isomerase; kinase; potassium; product inhibition; ribose; ribose 5-phosphate; x-ray crystallography; enzyme kinetics; fluorescence spectroscopy; protein structure; Molekylärbiologi; Molecular biology; Molekylärbiologi;

   Abstract : In the pentose phosphate pathway, carbohydrates such as glucose and ribose are degraded with production of reductive power and energy. Another important function is to produce essential pentoses, such as ribose 5-phosphate, which later can be used in biosynthesis of nucleic acids and cofactors. READ MORE