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Gum karaya
Names
Other names
Sterculia gum; Gum Sterculia; Indian gum tragacanth
Identifiers
CAS Number
9000-36-6
ECHA InfoCard
100.029.570
EC Number
232-539-4
E number
E416 (thickeners, ...)
UNII
73W9IQY50Q
CompTox Dashboard (EPA)
DTXSID7044182
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Gum karaya or gum sterculia, also known as Indian gum tragacanth, is a vegetable gum produced as an exudate by trees of the genus Sterculia. Chemically, gum karaya is an acid polysaccharide composed of the sugars galactose, rhamnose and galacturonic acid. It is used as a thickener and emulsifier in foods, as a laxative, and as a denture adhesive. It is also used to adulterate Gum tragacanth due to their similar physical characteristics. As a food additive it has E number E416.
Gum karaya can be obtained from the tree Sterculia urens. It is a valuable substance and is traditionally tapped by cutting or peeling back the bark, or by making deep gashes at the base of the trunk with an axe. These crude methods of extraction often resulted in the death of the tree, but it has been found that application of the plant growth regulator ethephon stimulates the production of gum, and when used in carefully controlled amounts, increases gum yield and enhances healing of the wounds and survival of the tree.[1]
^Nair, N.M.B. (2003). "Gum tapping in Sterculia urens Roxb. (Sterculiaceae) using ethephon". FAO. Retrieved 2015-01-25.
Gumkaraya or gum sterculia, also known as Indian gum tragacanth, is a vegetable gum produced as an exudate by trees of the genus Sterculia. Chemically...
Marathi (meaning "ghost tree"), kulu, Indian tragacanth, gumkaraya, katira, sterculia gum or kateera gum. The specific name urens refers to the stinging hairs...
annual legume Gumkaraya, made from the sap of Sterculia urens, an Asian tree species Spruce gum from the resin of spruce trees Kauri gum, from the fossilized...
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people it is known as Kukkuki. It is an important tree crop in Senegal as Gumkaraya obtained from the woody species is exported from the country. A deciduous...
colors, and sizes were traditionally made from gum tragacanth (Astragalus spp.), gumkaraya, guar gum, fenugreek (Trigonella foenum-graecum), fleabane...
mica), phosphate shale, and small amounts of adhesive binder (such as Gumkaraya), and a detergent agent (such as sodium dodecylbenzene sulfonate). Early...
cyclopropene fatty acids which could be carcinogenic or co-carcinogenic. Gumkaraya is extracted from Sterculia species, and is used as a thickener and emulsifier...
Natural gums are polysaccharides of natural origin, capable of causing a large increase in a solution's viscosity, even at small concentrations. They are...
Resins and Gums. The main objects of research are rosins (Pinus roxburghii), guar gum (Cyamopsis tetragonoloba), karayagum (Sterculia urens), gum Arabic...
of teak, palas, ain, bija, hald, salai, semal, tendu, beheda, hirda, karayagum, mahua and Bamboo trees. The Chandrapur area faces issues with human–wildlife...
vegetable gum, stabilizer, emulsifier 415 A E U xanthan gum thickener, vegetable gum, stabilizer 416 A E U karayagum thickener, vegetable gum, stabilizer...
to help it retain its shape. The lotion was traditionally made using karayagum, but more modern styles often use liquid styling gels or hairspray. Over...
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