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Acacia gum, pieces and powder Acacia senegal, pictured in the medicinal handbook Köhler's Medizinal-Pflanzen (1887) by Franz Eugen Köhler. Gum arabic (gum acacia, gum sudani, Senegal gum and by other names [a]) (Arabic: صمغ عربي) is a tree gum exuded by two species of Acacia sensu lato, Senegalia senegal [2] and Vachellia seyal.
The exudate gum of this tree is known as gum arabic and has been collected from the pharaonic times for the manufacture of medicines, dyes and paints. In the present commercial market, gum arabic is defined as the dried exudate from the trunks and branches of Senegalia (Acacia) senegal or Vachellia (Acacia) seyal in the family Leguminosae ...
The gum is drained from cuts in the bark, and an individual tree will yield 200 to 300 grams (7 to 10 oz). Eighty percent of the world's gum arabic is produced in Sudan. [6] The Chauhatan area of Barmer district in Rajasthan is also famous for gum production, this is called कुम्मट [7] (Kummat) in local language there.
The thickness (concentration) of shellac is measured by the unit "pound cut", referring to the amount (in pounds) of shellac flakes dissolved in a gallon of denatured alcohol. For example: a 1-lb. cut of shellac is the strength obtained by dissolving one pound of shellac flakes in a gallon of alcohol (equivalent to 120 grams per litre). [13]
Arabinogalactan, also known as galactoarabinan, larch arabinogalactan, and larch gum, is a biopolymer consisting of arabinose and galactose monosaccharides. Two classes of arabinogalactans are found in nature: plant arabinogalactan and microbial arabinogalactan. In plants, it is a major component of many gums, including gum arabic and gum ghatti.
In old recipes, gum arabic is added, [8] in the belief that it prevents the sugar from crystallizing and adds a smooth texture. [7] Some recipes omit the gum arabic, [9] thus are just simple syrup, considering the gum undesired, [7] or to reduce cost. [10] Gomme syrup is an ingredient commonly used in mixed drinks. [7]
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4 to 6 ounces (110 to 170 g) of gum arabic A few cloves The addition of the sulfate of indigo renders the ink less stable on the page and prone to premature browning over time, [ 2 ] but less liable to mould in the inkwell.