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Showing 1 to 20 of 80 for “"Monosaccharides"”.
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Water dynamics about selected monosaccharides in solution
… with water. In this thesis, the hydration of monosaccharides has been studied using computational methods. The hydration structure is elucidated by pair distribution functions and spatial distribution functions. Hydrogen bond exchange dynamics were investigated on the basis of the molecular …
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Synthesis of chiral intermediates by deritivization of monosaccharides
<p> <p>Conformationally constrained bicyclic amino acids are invaluable in the synthesis of natural products and peptidomimetics. Aeruginosins contain novel bicyclic amino acid, 2--‐carboxy--‐6--‐hydroxyl octahydrindole (Choi) as the core structure. Aeruginosins are tetra peptide serine protease …
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Some approaches to the innovative chemical use of sucrose and related monosaccharides
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Development of Free Energy Calculation Methods for the Study of Monosaccharides Conformation in Computer Simulations
… molecular dynamics simulations. In the field of monosaccharides, modeling the system within the molecular dynamics framework presents troublesome aspects. The most important issue is that some force fields (e.g., the chosen gromos 45a4 parameter set) fail in reproducing the conformational …
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Metabolic Pathways of Amino Acids, Monosaccharides and Organic Acids in Soils assessed by Position-Specific Labeling
… two amino acids (alanine and glutamate), two monosaccharides (glucose and ribose) and two organic acids (acetate and palmitate). C-13 remaining in soil and that incorporated into microbial biomass and specific microbial cellular compounds (phospholipid fatty acids (PLFA) and amino sugars) was …
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Towards the Synthesis of the Unusual Monosaccharides Found in the Shigella sonnei O-Antigen and Analysis of Shigella flexneri 2a Glycoconjugate Vaccine Samples
… acid (AltNAcA), the two unusual monosaccharides found in the repeating unit of the Shigella sonnei O-antigen. Since these sugars are not commercially available, synthetic derivatives are required as authentic standards for the analysis of the bioconjugate. Various routes to the …
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Methods for the structural modification and characterization of bacterial glycans
… context of a cell. The finding that non-natural monosaccharides could be internalized, processed, and displayed in cellular glycans in the early 1990s led to the development of metabolic incorporation probes for mammalian and microbial organisms. Taking advantage of the development of rapid, …
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Chemical composition and fiber structure as factors affecting fiber fermentation
… (HPLC) technique for the analysis of monosaccharides was developed. Procedures using sulfuric acid as the hydrolytic agent were superior compared to a procedure using trifluoroacetic acid. The HPLC technique, involving anion exchange chromatography and pulsed amperometric detection, …
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Diènophiles carbonylés dans la synthèse de Diels-Alder
… ou les produits de sa dégradation et de quelques monosaccharides. L'analyse des produits obtenus est étudiée par la spectrométrie i.r., la spectrométrie g.c.-m.s. et la spectrométrie r.m.n. Finalement, une analyse théorique de certains spectres de la résonance magnétique nucléaire est présentée.
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The Development of Novel Tools for the Metabolic Labelling of Glycans in Cancer
… is described for variable acetylation of tagged monosaccharides. Enhanced in vitro glycanlabelling was observed using Ac3ManCyoc or Ac2ManCyoc relative to Ac4ManCyoc. This enhancement was consistent across multiple cell lines. Other tagged sugars showed reduced labelling with decreased …
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Transport and Metabolism in the Gastrointestinal Tract of Diabetic Animals:a study involving lean and (ob/ob) mice
… small intestine, the transport and metabolism of monosaccharides, the activity of disaccharidases in the small intestine and transport of amino acids, in response to the (ob/ob) syndrome. The main adaptive response of the small intestine to the (ob/ob) syndrome was an increase in size due to …
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Versuche zur asymmetrischen organokatalytischen de novo Synthese von Amino-, Desoxy- und Thiozuckern
… the field of asymmetric synthesis of monosaccharides is gaining more and more attention. Rare and unnatural carbohydrates, as well as those with an uncommon pattern of substitution are of particular interest. Within the framework of this dissertation, new concepts for the direct …
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Bioprospecting for novel marine polysaccharides for the life sciences
… during extraction. The extensive range of monosaccharides found in the Paraglaciecola strains incorporates the monosaccharides found in glycosaminoglycan (GAG)-like or sphingan EPS, however they do not conform to the strict and limited definition of GAG-like or sphingan-like EPS due to the …
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Role of labellar and ovipositor taste sensilla of Drosophila suzukii in host recognition: a morpho-functional and behavioural approach.
… was stronger than to trehalose and to all monosaccharides, and that to sucralose was lower than to all other sugars. The palatability of the same sugars was evaluated by recording the proboscis extension reflex (PER). The palatability to sugars tested was: maltose = sucrose >trehalose = …
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Some physiological responses of two grasses as influenced by temperature, light, and nitrogen fertilization
… For all experiments the oligosaccharides and monosaccharides made up a rather large portion of the AEC in bentgrass, polysaccharides being the largest fraction. Polysaccharides in bermudagrass made up the largest fraction of the AEC, the monosaccharides and oligosaccharides being less than 10% …
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Electronic and solvent effects on monosaccharide conformations
… group rotational preferences of the monosaccharides glucose and galactose are different from each other and non-intuitive (from a steric point of view) in their preferences for gauche conformers. These molecules exhibit very different biological and thermodynamic properties in, for …
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Improved analytical methods for carbohydrate analysis in biofuel research.
… Monitoring of carbohydrates, specifically monosaccharides and sucrose, is required to evaluate the effectiveness of the applied bioprocessing conditions. However, due to the increasing number of possible treatment technologies and potential combinations, the number of samples to be analyzed …
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Electronic and solvent effects on monosaccharide conformations
… group rotational preferences of the monosaccharides glucose and galactose are different from each other and non-intuitive (from a steric point of view) in their preferences for gauche conformers. These molecules exhibit very different biological and thermodynamic properties in, for …
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