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tragacanth |
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tragacanth (trăg`əkănth) or gum tragacanth, gummy exudation from the leguminous shrub Astragalus gummifer and related pulse pulse, in botany, common name for members of the Fabaceae (Leguminosae), a large plant family, called also the pea, or legume, family. Numbering about 650 genera and 17,000 species, the family is third largest, after the asters and the orchids. ..... Click the link for more information. family plants of SE Europe and W Asia. It is obtained through incisions in the stem of the plant. The gum is produced chiefly in Iran. Tragacanth is almost insoluble in water but swells in it to form a stiff gel. It is used as an emulsifying agent, as a component of pills, hand lotions, and medicinal lubricating jellies, as a demulcent, and as a sizing material. A gum (sometimes called Indian tragacanth) from a plant of the sterculia sterculia (stərky ..... Click the link for more information. family is sold as a cheaper substitute. See gum gum, term commonly applied to any of a wide variety of colloidal substances somewhat similar in appearance and general characteristics, exuded by or extracted from plants. ..... Click the link for more information. . tragacanth [′traj·ə‚kanth] (materials) The gummy exudate produced by certain Asiatic species ofAstragalus; consists of a soluble portion containing uronic acid and arabinose, and an insoluble portion that absorbs water and swells to make a stiff opalescent mucilage. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In rare instances, tragacanth has caused severe allergic reactions. Biopsies were mounted in gum tragacanth, quickly frozen in isopentane cooled to the temperature of liquid nitrogen, and then stored at-700C until they were sectioned and stained. 2] PFU) were incubated overnight at 4[degrees]C, injected onto monolayers of Vero cells, and overlaid with 1% Tragacanth gum (Sigma-Aldrich S. |
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