A gum exuded by the African acacia trees Acacia senegal and A. seyal, used as a thickener, emulsifier, and stabilizer in food, pharmaceutical, and industrial products.
A gum obtained from several African acacias (esp. Acacia senegal), used in medicine and candy, for stabilizing emulsions, etc.
A gum exuded by various African trees of the genus Acacia, especially A. senegal. Gum arabic is used in the preparation of pills and emulsions, in the manufacture of adhesives and candies, and as a thickener and stabilizer of colloids. Gum arabic consists mostly of a mixture of oligosaccharides and heavy glycoproteins.
An edible substance taken from one of two species of sub-Saharan acacia trees. It is used in the food industry as a stabilizer (e.g. in soda, gumdrops and marshmallows) and in other industries including pharmaceuticals, paints and polishes.
Other Word Forms
Origin of gum-arabic
American Heritage Dictionary of the English Language, 5th Edition
Gum-arabic Sentence Examples
The majority of plant specimens are most suitably fastened on paper by a mixture of equal parts of gum tragacanth and gum arabic made into a thick paste with water.
Omdurman is the headquarters of the native traders in the Anglo-Egyptian Sudan, the chief articles of commerce being ivory, ostrich feathers and gum arabic from Darfur and Kordofan.
When these fires occur while the trees are full of sap, a curious mucilaginous matter is exuded from the half-burnt stems; when dry it is of pale reddish colour, like some of the coarser kinds of gum-arabic, and is soluble in water, the solution resembling gumwater, in place of which it is sometimes used; considerable quantities are collected and sold as " Orenburg gum "; in Siberia and Russia it is occasionally employed as a semi-medicinal food, being esteemed an antiscorbutic. For burning in close stoves and furnaces, larch makes tolerably good fuel, its value being estimated by Hartig as only one-fifth less than that of beech; the charcoal is compact, and is in demand for iron-smelting and other metallurgic uses in some parts of Europe.
At one time also some species were used in the arts for supplying a gum as a substitute for gum-arabic. These were chiefly Ramalina fraxinea, Evernia prunastri and Parmelia physodes, all of which contain a considerable proportion of gummy matter (of a much inferior quality, however, to gum-arabic), and were employed in the process of calico-printing and in the making of parchment and cardboard.
A kind of thick paste, known as jujube paste, was also made of a composition of gum arabic and sugar dissolved in a decoction of jujube fruit evaporated to the proper consistency.