Maltose solutions

Fadel, H.H. and Farouk A., Caramelization of maltose solution in presence of alanine, Amino Acids, 22, 199, 2002. 

Table 1.14 Loss of I-butanol during the freeze drying of a maltose solution (Table IV from [1.74]).

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. 

The specific rotation of maltose in water is +138°. What would be the concentration of a maltose solution that had an optical rotation of +23° if a polarimeter tube 10 cm long was used ... 

Figure 7.3 is another example of a typical state diagram, developed for maltose. Maltose solutions are in glassy state below Tg curve. T g (onset of glass transition) and (onset of ice melting) show constant values for the maximally freeze concentrated solutions, where maximum ice formation occurs between T and Tg, and T is at the end point region of Tg (Figure 7.3) (Roos and Karel 1991b). State diagram for sucrose (Figure 7.4) also shows similar characteristics (Roos and Karel 1991a).

Remove a single colony from the Y1090 stock plate using aplastic disposable loop and inoculate a sterile 150 mL conical flask containing 50 mL of LB. To this add 0.5 mL of a 20% maltose solution. Incubate overnight at 37°C with shaking (180 rpm). 

When maltose and cellobiose are irradiated with fast electrons in air-equilibrated, 50% solutions, the predominating reaction is hydrolysis, and the results suggest that the a-D linkage is the more labile, a conclusion in accord with the relative ease of hydrolysis of these disaccharides by acids. A number of samples of aqueous maltose solutions (20%) were irradiated with electrons to doses of 20 to 100 M rep. The apparent hydrolysis, as determined by the reducing power, increased linearly with dose, and this result has been interpreted in terms of the hydrolysis of only one bond. ... 

Rate of Fermentation.—The ratio of carbon dioxide to alcohol produced and the ratio of yeast formed to alcohol produced both vary at different stages of the fermentation. They depend both on the age of the yeast and on the age of the fermentation. Slator, J.C.S. (1906), 89 128, and ibid. (1908), 93 217 has shown that the rate of conversion of dextrose into alcohol and carbon dioxide by yeast is exactly proportional to the amount of yeast present and, with the exception of very dilute solutions, is almost independent of the concentration of sugar. Slator and Sand, Trans. Ch. Soc. (1910) 97 922-927 have further developed and explained this fact by showing that the diffusion of sugar into the yeast cell is so rapid even in dilute solutions that more sugar is present in the cell than can be fermented at any instant. Various yeasts will ferment levulose (fructose) at the same rate as that at which dextrose is fermented. Similarly, maltase-containing-yeasts will ferment maltose solutions at the same rate as if dextrose were being fermented. 

From left to right, four test tubes containing Benedict s reagent, 2% maltose solution, 2% sucrose solution, and 2% lactose solution. 

Needless to say, this sequenced freeze-drying operation could be repeated, say with a 2 p. 100 maltose solution in diethylamine, resulting in a triple intermingled network of three compounds polystyrene, dextran, and maltose and so on. 

Fig. 4 Antitumor activity in a mouse model of liver metastasis. Mice were inoculated with HT-1080 cells by direct intrasplenic injection on day 0. Spleens were removed 10 min after inoculation. Each compound was administered by tail vein injection from day 4 to day 8 and from day 11 to day 15 (two 5-day cycles of daily injections). The inhibitory effect of the treatments on the increase in liver weight was evaluated on day 20. Left B717 siRNA or antisense DNA complexed with LlC-101. Right Naked B717 or LIC-101 alone. In sham mice, the spleen was exposed but no cells were injected. Control mice were treated with 10% (w/v) maltose solution. significantly different from control alP < 0.02...

Fig. 16 Induction of lEN-a by dshRNA and siRNA. Human peripheral blood mononuclear cells were treated for 24 h with dshRNA complexed with LIC-101, and IFN-a levels measured by enzyme-linked immunosorbent assay (ELISA). Maltose solution (10% w/v) was used as the negative control and B717 slRNA as the positive eontrol [127]...

The ->AGU are joined together by a-l,4-glucosi-dic linkages. Maltotriose syrup is derived from high - maltose syrup by cation-exchange resin chromatography. A by-product of this separation process is maltose solution of 98% purity. It is also available from hydrolysis of the polysaccharide ->pullulan by the debranching enzyme pullula-nase. 

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%. 

KUmartin PA, Reid DS, Samson I. The measurement ofthe glass transition temperature of sucrose and maltose solutions with added NaCl. /Sci Food Agric 2000 80(15) 2196-2202. 

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