Polysaccharides Cellulose, Dextran, Dextrins

Polysaccharides. See also, Carbohydrates, Cellulose, Dextran, Dextrins, Fructans, Glycogen, Glycosiduronic acids (poly-), Pectin materials. Starch, and Xylan. 

When coupled, with cooling, with phenylhydrazine, the periodate-oxidized polysaccharides containing two or more adjacent hydroxyl groups (for example, cellulose, starch, dextrin, and dextran) yield bright-yellow phenyl-hydrazones within a few minutes. ... 

Like the simple formazans, the formazans of oxidized polysaccharides form complexes with heavy metal salts with ease. On warming the formazans of oxidized cellulose, starch, dextrin, dextran, or inulin with copper, cobalt, nickel, or uranium salt solutions, their characteristically-colored metal complexes are obtained. The presence of carboxyl groups in the polysaccharide formazans frequently facilitates complex formation. ... 

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