Acacia mangium

Acacia mangium
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Fabales
Family:	Fabaceae
Genus:	Acacia
Species:	A. mangium
Binomial name
	Acacia mangium; Willd.
	Range of Acacia mangium
Synonyms
	Acacia glaucescens sensu Kaneh. & Hatus.; Acacia holosericea A. Cunn.; Acacia holosericea G. Don var. glabrata auct. non Maiden; Acacia holosericea G. Don var. multispirea auct. non Domin; Acacia holosericea G. Don var. neurocarpa auct. non (Hook.)Domin; Mangium montanum Rumph.; Racosperma mangium (Willd.) Pedley;

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Acacia mangium is a species of flowering tree in the pea family, Fabaceae, that is native to northeastern Queensland in Australia, the Western Province of Papua New Guinea, Papua, and the eastern Maluku Islands.^[2] Common names include Black Wattle, Hickory Wattle, Mangium, and Forest Mangrove. Its uses include environmental management and wood.^[1]Acacia mangium grows up to 30 metres (98 ft) tall, often with a straight trunk. This tree is widely used in Goa in the mining industry for rehabilitation of the waste dumps as it is a drought resistant species and binds the sterile mine waste consisting of lateritic strata. Like many other legumes, it is able to fix nitrogen in the soil.^[3] Acacia mangium has about 142,000 seeds/kg.^[4]

[edit] Chemistry

The gum contains 5.4% ash, 0.98% N, 1.49% methoxyl, and by calculation, 32.2% uronic acid.^[5] The sugar composition after hydrolysis: 9.0% 4-0-methylglucuronic acid, 23.2% glucuronic acid, 56% galactose, 10% arabinose, and 2% rhamnose.