» Powdered Ginger is Ginger reduced to a fine or a very fine powder.
Packaging and storage Preserve in well-closed containers, protected from light and moisture, and store in a cool area.
Labeling The label states the Latin binomial and, following the official name, the part of the plant source from which the article was derived.
USP Reference standards 11
USP Capsaicin RS.
USP Ginger Constituent Mixture RS.
USP Powdered Ginger RS.
Botanic characteristics Under a microscope, Powdered Ginger reveals mainly starch granules and parenchyma cells containing them; simple, large, flattened, ovoid or sack-shaped starch granules, 5 to 15 µm wide and 30 to 60 µm long having an eccentric hilum, some showing faint transverse striations; parenchyma cells containing yellow-brown to dark brown resinous substances; groups of large, thin-walled nonlignified septate fibers with wide lumen; portions of septate fibers with attached vessels; large vessels with annular, spiral, or reticulate thickening and often accompanied by parenchyma cells containing brown content; oleoresin in fragments or droplets, staining with iodine TS and potassium iodide TS; and, rarely, fragments of brown cork tissue, usually seen in surface view. Sclerenchymatous cells, trichomes, and calcium oxalate absent.
Heavy metals 231: 0.002%.
Other requirements It responds to the Identification tests and meets the requirements for Total ash, Acid-insoluble ash, Water-soluble ash, Water, Alcohol-soluble extractives, Water-soluble extractives, Volatile oil content, Pesticide residues, Microbial enumeration, Starch content, Limit of shogaols, and Content of gingerols and gingerdiones under Ginger.
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USP32NF27 Page 1016Pharmacopeial Forum: Volume No. 33(3) Page 479