Maltose monosaccharide linkage

Figure 9.17 Alpha and beta anomers of maltose. When only the hydroxyl group on the anomeric carbon of one of the monosaccharide residues is involved in the glyco-sidic linkage, the anomeric hydroxyl group on the other residue is still free. This permits two possible orientations, which are described as either alpha or beta forms of the monosaccharide residue.

Disaccharides consist of two monosaccharide subunits hooked together by an acetal linkage. Maltose has an... 

CD provides a powerful mean to determine the intersaccharide linkages in di- and trisaccharides. Voelter et al. (46,47) demonstrated that 6-0-pyranosyl sugars can be differentiated from 4-O-pyranosyl sugars by CD. The essential requirement for di- and trisaccharides to show Cotton effects is the same as for monosaccharides, namely that complex formation requires free hydroxyl groups at C-1, C-2 and C-3. However, although lactose(26), cello-biose(27), maltose(28) and maltotriose(29) possess free hydroxyl... 

Disaccharides are sugars composed of two monosaccharide nnits linked together by the acetal or ketal linkages described earlier. They can be hydrolyzed to yield their monosaccharide building blocks by boiling with dilute acid or reacting them with appropriate enzymes. Nutritionally, the most important members of this gronp are maltose, lactose, and sucrose. 

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