Tragacanthin polysaccharide

This uronan (Stauffer, 1980 Whistler, 1993) contains a major neutral, insoluble albeit swellable component called bassorin and a minor water-dispersible, acidic component called tragacanthin. It is one of the more acid-and heat-stable, surfactant polysaccharides, and it has wide application in a miscellany of industries. The primary structures appear to be arabinogalac-tans and arabinogalacturonan methyl esters incorporating lesser quantities of xylose, rhamnose, and fucose. 

Tragacanthin A complex mixture of polysaccharides containing some galacturonic acid residues The soluble component of the natural (plant origin) tragacanth gum Binder (in tablets) and demulcent... 

The gum consists of a mixture of water-insoluble and water-soluble polysaccharides. Bassorin, which constitutes 60-70% of the gum, is the main water-insoluble portion, while the remainder of the gum consists of the water-soluble material tragacanthin. On hydrolysis, tragacanthin yields L-arabinose, L-fucose, D-xylose, D-galactose, and D-galacturonic acid. Tragacanth gum also contains small amounts of cellulose, starch, protein, and ash. 

Complex mixt. of polysaccharides contains two primary constituents, water-sol. Tragacanthin and water-insol. Bassorin. Dried exudate from Astrala-gus gummifer and other Astralagus speciea Stabiliser, thickener and emulsifier in food manuf. 

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