Trehaloses relationship

It was shown that, in the maturing seeds, while the synthesis of reserve hemicellulose progresses in the endosperm, a large amount of a trehalose is formed, in addition to sucrose and umbelliferose.92 This trehalose disappears rapidly during the progress of the ripening process, and umbelliferose accumulates continuously. It was predicted that the trehalose may be present in most umbellifers however, the relationship of this disaccharide to the biosynthesis of umbelliferose, and the mechanism involved therein, are not known. 

Figure 13 Relationship between kinetics of chemical processes, measured as t versus (T - To) of freeze-dried hGH, formulated with stachyose and trehalose, with protein sugar weight ratios of 1 1, 3 1 and 6 1, at 40 and 50°C. Symbols = chemical deterioration and A = hGH aggregation. Redrawn with changes from M.J. Pikal, private communication of unpublished results...

The enthalpies of dilution at 25°C of binary and tertiary aqueous solutions containing the isomeric disaccharides cellobiose, maltose, and trehalose, were investigated, and an empirical relationship between saccharide solvation and solute solute interactions was deduced. The thermochemical properties of aqueous solutions of small carbohydrates as glasses and rubbers at sub-zero temperatures have been measured by differential scanning calorimetry (DSC), and the thermodynamic properties of alcohols and monosaccharides in aqueous biuret solution at 25 C have been determined by flow microcalorimetry. By use of DTG... 

The Isorotation Rules of Hudson are applicable to disaccharides. As shown in Table I, all a-D-glucopyranosyl-D-glucoses show high dextro optical rotations, whereas ) -D-glucopyranosyl-D-glucoses have far smaller rotations. Likewise, consideration of the optical rotatory relationships of three isomers indicates that both anomeric carbons of naturally-occurring trehalose... 

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