| Acacia senecal dried brittle glassy gummy exudation. AKA Gum Arabic.Shows no structure under the microscope. Reduce some of the gum to fine powder and dissolve about five grams in 10 parts water; centrifuge for a short time and examine the sediment for impurities which are usually present, consisting of trace of starch, some dirt and bits of vegetable tissue.
Source: Schneider, A. (1921) The Microanalysis of Powdered Vegetable Drugs, 2nd ed. [1]
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