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Gum Arabic
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Product Description |
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Place of Origin: Nigeria
Quantity: 3000MTs
Packaging: Packed in Jute Bags
Price: Grade I US$4100PMT & Grade 2 US$ 1250
Classification: Vegetables - Lac, Gums, Resins, ETC
Product Descpription:
Gum Arabic, a natural gum also called gum acacia, is a substance that is taken from two sub-Saharan species of the acacia tree, Acacia Senegal and Acacia seyal. It is used primarily in the food industry as a stabilizer, but has had more varied uses in the past, including viscosity control in inks. Gum Arabic is used extensively in pharmaceutical preparations, inks, pottery
pigments, water colours, wax polishes and liquid gum. It is used for dressing fabrics, giving luster to silk and crepe. It is used for thickening colours and mordents in calico-printing.
Solubility One gram of gum Arabic dissolved in 2ml of water forms an acidic solution and is insoluble in ethanol.
Optical rotation Water solutions of gum from Acacia
Senegal are laevorotatory while that from Acacia
Seyal are dextrorotatory.
Hydrolysis products Hydro-lysate of Gum Arabic can be used to identify arabinose, galactose, rhamnose and glucuronic acid. A chemical test on the hydrolysate will produce greenish yellow colour with hexoses, red colour with pentoses and brown
colour with uronic acids.
Purity (Loss on drying) For granular gum Arabic, it is not more than 15% (105o,5hr) and not more than 10% (104o,hr) for spray-dried material. Unground samples should be powdered to pass through a No.40 sieve and mixed well before weighing.
Total ash = 4%
Acid insoluble ash = 0.5%
Acid insoluble matter = 1%
Arsenic not more than 3mg/kg (or 3 ppm)
Lead not more than 5mg/kg (or 3 ppm)
Starch or dextrin No reddish or bluish colour should be produced when a boiled solution (1 in 50 solutions) is tested with iodine.
Tannin – bearing gums No blackish coloration or precipitate should be formed when tested with ferric chloride solution.
The first grade Gum Arabic finds uses in confectionery and pharmaceutical industries while second grade find uses in other industrial applications. |
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