Water Maltose

Hills, B.P. and Pardoe, K. 1995. Proton and deuterium NMR studies of the glass transition in a 10% water-maltose solution. J. Mol. Liquids 62, 229-237. 

Lourdin, D., Colorma, P, and Ring, S.G. Volumetric behaviour of maltose-water, maltose-glycerol and starch-sorbitol-water systems mixtures in relation to structural relaxation, Carbohydr. Res., 338, 2883, 2003. 

The range of interactions of other soluble carbohydrates with water also depends on their structure. The organised structure of water molecules is always relatively impaired. A ribose molecule, for example, is associated with 2.5 molecules of water, maltose and... 

The prediction of the aw of the water + glycerol or water + maltose solutions is good regardless of the tested molality, up to 5.5 moles of glycerol/kg of water or 2.8 moles of maltose/kg of water (Table 3.2). The relative deviation (E) remains on average below 1.5%, that is 0.007 aw unit. However, for high molality values, it can reach, for example 3% at 11 moles of fructose/kg of water and 6% at 5.8 moles of sucrose/kg of water. For water + glucose + fructose ternary solutions, the predictions are quite correct since the mean deviation is 0.53%. 

The two stereoisomeric forms of maltose just mentioned indergo mutarotation when dissolved in water What is the structure of the key intermediate in this process ... 

The pH has a great influence on the en2ymatic processes during mashing. Through water treatment it is possible to bring about shifts in pH whereby the transformations are decisively induenced. ( -Amylase has a pH optimum at 5.4, a-amylase at 5.8, and the normal mash has a pH of about 5.4 during saccharification. The induence of the concentration of the mash is such that thin mash increases the yield of both extract and maltose (Table 9). 

Maltose (H2O) [6363-53-7] M 360.3, m 118 . Purified by chromatography from aqueous soln on to a charcoal/Celite (1 1) column, washed with water to remove glucose and other monosaccharides, then eluted with aqueous 75% EtOH. Crystd from water, aqueous EtOH or EtOH containing 1% nitric acid. Dried as the monohydrate at room temperature under vacuum over H2SO4 or P2O5. 

Write a chemical equation, using molecular formulas, for the reaction of maltose with water to form glucose. 

The separation was carried out on a TSKgel Amide-80 column 4.6 mm i.d. and 25 cm long with a mobile phase consisting of a 80% acetonitrile 20% water mixture. The flow rate was 1 ml/min and the column was operated at an elevated temperature of 80°C. The saccharides shown were 1/ rhamnose, 2/ fucose, 3/ xylose, 4/ fructose, 5/ mannose, 6/ glucose, 7/ sucrose and 8/ maltose. The analysis was completed in less than 20 minutes. These types of separations including other biomonomers, dimers and polymers are frequently carried out employing refractive index detection. 

Addition of an aqueous solution of PEG to a saturated aqueous solution of a-CD at room temperature did not lead to complex formation unless the average molecular weight of PEG exceeded 200 [46]. Moreover, carbohydrate polymers such as dextran and pullulan failed to precipitate complexes with PEG, and the same was true for amylose, glucose, methyl glucose, maltose, maltotriose, cyclodextrin derivatives, such as glucosyl-a-CD and maltosyl-a-CD, and water-soluble polymers of a-CD crosslinked by epichlorohydrin. These facts suggested to Harada et al. the direction for further research. 

Lewis201 postulated maltosone as the first product in the oxidation of maltose by Fehling solution, but no osone was detected when maltose was treated with Fenton s reagent.23 Oxidation of maltosone with bromine water gave 2-oxo-maltobionic acid, isolated as its brucine salt.191... 

CL emission. The system allows a simple determination of phosphate in 3 min with a linear range of 4.8-160 pM. Owing to its sensitivity, this method could be satisfactorily applied to the analysis of maximum permissible phosphate concentrations in natural waters [42-44], Also, the maltose-phosphorylase, mutar-ose, and glucose oxidase (MP-MUT-GOD) reaction system combined with an ARP-luminol reaction system has been used in a highly sensitive CL-FIA sensor [45], In this system, MP-MUT-GOD is immobilized on A-hydroxysuccinimide beads and packed in a column. A linear range of 10 nM-30 pM and a measuring time of 3 min were provided, yielding a limit of detection of 1.0 pM as well as a satisfactory application in the analysis of river water. 

SONG w o, BEECHER G R and eitenmiller R R (2000), Modern Analytical Methodologies In Fat- and Water-soluble Vitamins. Chichester, Wiley. sprenger c, galensa r and jensen d (1999), Simultaneous determination of cellobiose, maltose and maltotriose in fruit juices by high-performance liquid chromatography with biosensor detection , Dtsch Lebensm Rundsch, 95, 499-504. 

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