Search for dissertations about: "lignin-carbohydrate bonds"

Showing result 1 - 5 of 9 swedish dissertations containing the words lignin-carbohydrate bonds.

2. 1. Lignin-carbohydrate complexes: Model compounds synthesis

   Author : Filip Nylander; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lignin-carbohydrate complex; lignin model compounds; lignocellulose;

   Abstract : In lignocellulose there is a recalcitrant interaction by covalent and non-covalent bonds called the lignin-carbohydrate complex. This interaction has been the subject of studies trying to unveil its chemical structure, to understand the mechanims involved in its formation and to determine its influence on practical applications such as the process of turning biomass into ethanol. READ MORE

4. 2. Fundamental Aspects of Lignin Carbohydrate Complexes (LCC) : Mechanisms, Recalcitrance and Material concepts

   Author : Nicola Giummarella; Martin Lawoko; Gunnar Henriksson; Arthur J. Ragauskas; KTH; []
   Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Lignin Carbohydrates Complexes; Phenyl Glycosides; Benzyl Ethers; Benzyl and γ-esters; Universal Mild Quantitative fractionation; LCC mechanism formation; Extracellular lignin; Dehydogenation polymer; Autohydrolysis; Recalcitrance; Acetylation role; HSQC; HMBC; HSQC-TOCSY; 13C; 31P NMR; Thioacidolysis-GC; SEC; Green; Biomimetic; One-pot-lignin functionalization; Lignin platform material.; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Covalent bonds between lignin and carbohydrates, forming a matrix referred to as lignin carbohydrate complexes (LCC), remain one of the most controversial topics in wood chemistry. A key issue is whether they are formed during chemical and mechanical pretreatments of the compact wood structure or actually present in wood prior to isolation. READ MORE

5. 3. Enzyme assays for lignin–carbohydrate bond hydrolysis

   Author : Hampus Sunner; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Enzyme kinetic param- eter estimation; Glucuronoyl esterase; Enzyme assays; Lignin-carbohydrate bonds; Synergistic enzyme assay;

   Abstract : To identify, produce, and use enzymes, analytical methods known as enzyme assays are employed. Enzyme assays are based on analysing the changes brought about on a substrate by an enzyme under defined conditions. Assays are often based on simplified reactions acting as substitutes for the reaction of interest. READ MORE

6. 4. Enzymes for selective decoupling of woody biomass: From fundamentals to industrial potential

   Author : Jenny Arnling Bååth; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lignocellulose; glucuronoyl esterase; polysaccharide acetylation; carbohydrate esterase family 15; woody biomass; materials biorefinery; enzyme accessibility; lignin-carbohydrate bonds; mannanase; galactoglucomannan;

   Abstract : The need for an economy based on renewable materials has resulted in growing interest in the use of woody biomass in a wider field of application. However, the chemical complexity of lignocellulose and the dense structure of wood pose challenges in its processing. READ MORE

7. 5. A biomimicking approach for hemicellulose processing

   Author : Petri Oinonen; Gunnar Henriksson; Edouard Pesquet; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mechanical pulping; Hemicellulose; Cross-linking; Lignin-carbohydrate-complex; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Lignocellulose can become the best opportunity for the society to reduce its dependency on the harmful petroleum based products as well as to produce clean energy. In each part of the production cycle, biomass based products have a better environmental profiles than their petroleum based counterparts. READ MORE