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Showing 1 to 20 of 75 for “"maltose"”.
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Discovering the Biological Activities of Maltose Derivatives for Controlling Bacterial Multicellular Behaviors
… two different kinds of nonmicrobicidal agents, maltose derivatives and brominated furanones, as modulators of different bacterial multicellular behaviors has been demonstrated. Rhamnolipids secreted by Pseudomonas aeruginosa are biosurfactants that are known to be essential for at least three …
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Effect of different disaccharides as energy supplements in tris-egg yolk semen extender on the quality of cryopreserved boer goat spermatozoa
… effect of (a) addition of three disaccharides (maltose, sucrose and trehalose) and (b) disaccharides combination (maltose and trehalose) at different concentrations using tris-egg yolk extender. For experiment 1: the study was replicated six times and was conducted in a 3 x 2 x 2 factorial …
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Dietary carbohydrates influence the structure and function of the intestinal alpha-glucosidases
… α-amylase, maltooligosaccharides (including maltose) are the main substrates for the α-glucosidases at the intestinal brush border. Here, maltose was shown to induce the formation of a higher molecular weight (HMW) sucrase-isomaltase (SI) species in Caco-2 cells that sorts more quickly to the …
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ΔΙΗΛΕΚΤΡΙΚΗ ΜΕΛΕΤΗ ΤΗΣ ΚΑΤΑΣΤΑΣΗΣ ΤΟΥ ΝΕΡΟΥ ΣΕ ΥΔΑΤΙΚΑ ΔΙΑΛΥΜΑΤΑ ΚΑΙ ΥΔΑΤΩΜΕΝΑ ΣΤΕΡΕΑ ΔΕΙΓΜΑΤΑ ΜΟΝΟ-ΚΑΙ ΔΙ-ΣΑΚΧΑΡΙΤΩΝ
… AND THE DISACCHARIDES CELLOBIOSE, LACTOSE, AND MALTOSE, IN THE TEMPERATURE REGION OF 80-300K AND CONCENTRATIONS BETWEEN 0 .0003-15 MOL/LT, AND OF THE HYDRATED SOLID SAMPLES OF GALACTOSE AND MALTOSE IN THE RANGE OF HYDRATION H=0.8-20.2% AND THE SAME TEMPERATURE REGION THE DIM WAS TO GAIN …
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Protease Use In Ethanol Production From Dry Fractionated Corn
… yield was attributed to poorer utilization of maltose, evident from the increase in maltose concentrations after fermentations with increasing initial FAN. Using glucose and maltose solutions, we observed high residual maltose during fermentations with high FAN supplementation. However, in …
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Role of labellar and ovipositor taste sensilla of Drosophila suzukii in host recognition: a morpho-functional and behavioural approach.
… with metabolizable mono- and disaccharides (maltose, sucrose, trehalose, glucose, fructose) and non-metabolizable sugars (arabinose, sucralose); the response to maltose and sucrose was stronger than to trehalose and to all monosaccharides, and that to sucralose was lower than to all other …
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Molecular Cloning and Structure-Function Analysis of the Plant Proton-Sucrose Symporter
… transformed yeast were screened on sucrose- or maltose-limited media for growth. Three point mutations were identified---H65Q, G334S, and L461P. Significantly, they all displayed enhanced sucrose transport rate. H65Q and G334S also increased maltose transport activity. In the predicted …
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A potential nutraceutical from Leuconostoc mesenteroides B-742 (ATCC 13146); production and properties
… restricting the polymer size by the addition of maltose. Maltose limits the dextransucrase reaction, yielding high concentrations of a-glucooligosaccharides. Branched oligomers produced by this process were found to be readily catabolized by bifidobacteria and lactobacillus but were not readily …
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Physical Aging, Solubility, and Water Activity of Selected Disaccharides
… increased with aging time. In experiment two, maltose glasses aged at the $\rm Tg - 20\sp\circ C$ took longer to approach equilibrium. The excess enthalpy increased with aging time in both experiments. In experiment two, two mathematical models, Cowie and Ferguson (CF) and …
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The regulation and two genes in Bacteroides thetaiotaomicron starch utilization system
… level, and their expression is induced by maltose. We report here the identification and characterization of a gene, susR, which appears to be responsible for maltose regulation of the sus structural genes. The deduced amino acid sequence of SusR protein had a helix-turn-helix motif at its …
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Mechanistic modeling of bacterial nutrient uptake strategies
… trade-off governs E. coli's regulation of maltose uptake and chemotaxis to maltose; (ii) a rate-affinity trade-off in nutrient transport systems governs the speciation of marine oligotrophic and copiotrophic heterotrophs; and (iii) an exploration-conservation trade-off governs the …
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The stability of enzymes during breadmaking and their influence on staling characteristics
… was used to analyse the aqueous extracts for maltose, glucose, fructose, lactose and sucrose. Commercial flours were found to contain low levels of sugars with maltose being the predominant sugar present. For comparative purposes, a number of commercial breads were also analysed and the …
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Simultaneous biochemical reaction and separation in a continuous rotating annular chromatograph
… and the saccharification of liquefied starch to maltose and dextrin using the enzyme maltogenase. Simultaneous biochemical reaction and separation has been successfully carried out for the first time in a CRAC by inverting sucrose to fructose and glucose using the enzyme invertase and collecting …
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Physico-chemical properties of polypropylene glycols
… and PPG. The effect of five sugars (mannitol, maltose, raffinose, sucrose and trehalose) on the Tm (transition temperature) of aqueous PPG 1000 solutions was studied by HSDSC and turbidity measurements. All the sugars decreased the phase separation temperature of the PPG solutions, with …
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Molekulare, biochemische und strukturelle Untersuchungen an amylolytischen Enzymen von Thermotoga maritima MSB8
… die Kristallstrukturaufklärung der MTase (MTase-Maltose-Komplex) mit einer Auflösung von 2,4 Å (2,1 Å). Die katalytische Kerndomäne enthält die typische ''TIM-barrel''-Struktur der Glycosylhydrolase Familie 13 mit dem aktiven Zentrum (katalytische Reste: Asp385, Glu414 und Asp468) am C-terminalen …
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Developing analytical tools for saccharides in condensed phases
… are applied to molecular dynamics simulations of maltose, hexa-amylose and a series of cyclodextrins in solution, in order to investigate the effects of water on these polysaccharides. Maltose is investigated because of its potential as a model for larger polysaccharides comprising α(1 → 4)-linked …
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Regulation of Fructose 1,6-bisphosphatase II (GlpX) Gene Expression in Escherichia coli
… grown on glycerol compared with levels in maltose- or glucose-grown cultures (glycerol>maltose>glucose). Various strains and growth conditions were used to show that GlpX levels are regulated by GlpR, suggesting that PglpF can give rise to expression of glpX. GlpX protein was present in a …
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Combined bioreaction and separation in a simulated counter-current chromatographic bioreactor-separator system
… the saccharification of modified starch to maltose and dextrin using the enzyme maltogenase, the hydrolysis of lactose to galactose and glucose in the presence of the enzyme lactase and the biosynthesis of dextran from sucrose using the enzyme dextransucrase. Combined bioreaction and …
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Genetic and environmental regulation of virulence genes in Salmonella enterica serovar Typhimurium.
… and expression of maltoporin, which transports maltose and maltodextrins across the bacterial cell membrane. Propanediol, ethanolamine, and maltodextrins are byproducts of digestion likely present in the intestinal tract. Vitamin B12 is required for utilization of propanediol and ethanolamine. …
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