Black wattle gum

Wattle Gum. This material is gathered in Australia from several species of acacia, specifically Acacia pycnantha, or the tree known locally as the black wattle gum tree. Acacia decurrens, the silver wattle gum tree. Acacia dealbata. Acacia sentis, and Acacia homalophylla. The gum is usually hard, glassy, and in most cases fairly transparent. It is much darker in color than the true gum arabics. 

Preparation 35). Mesquite gum, from a plant Prosopis juliflora and related species) common in the southwestern United States, and cherry gum are utilized. Mesquite gum consists of L-arabinose, D-galactose, and 4-0-methyl-D-glucuronic acid in combination, and cherry gum in addition has some D-xylose and D-mannose. By controlled hydrolysis most of the pentose is removed without hydrolyzing the other constituents to any great extent. The L-arabinose is then partially purified by dialysis 36) or ion-exchange procedures 37) and crystallized from ethyl alcohol. Wheat and rye bran, peach gum, Australian black wattle gum, and spent beet pulp have been utilized for the preparation of L-arabinose. 

Gum arabic (gum acacia) (55-55), black wattle gum (55), egg plum gum, almond tree gum, and peach tree gum Aspen wood 90) y corn-cobs 91)y Western hemlock 91a)... 

Another i4cacta gum, black wattle gum, has been shown to contain the same four components as gum arabic, in the proportions 6 1 5 . 

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