U.S. PHARMACOPEIA

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Powdered Ginger
» 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.
Labeling— The label states the Latin binomial and, following the official name, the part of the plant source from which the article was derived.
Botanic characteristics— Under a microscope, Powdered Ginger reveals mainly starch grains and parenchyma cells containing them; also parenchyma cells containing yellow-brown to dark brown resinous substances or single crystals of calcium oxalate; fragments of fibers with distinct pits; fragments of spiral, ring, and reticulate vessels often accompanied by pigment cells; oleoresin in fragments or droplets, staining with iodine TS and potassium iodide TS, and, rarely, fragments of cork tissue; starch grains composed of simple, compound or half-compound grains, spherical ovoid or globular with abaxial hilum, usually 20 to 30 µm in long axis. 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.
Auxiliary Information— Staff Liaison : Maged H. Sharaf, Ph.D., Senior Scientist
Expert Committee : (DSB05) Dietary Supplements - Botanicals
USP29–NF24 Page 2332
Phone Number : 1-301-816-8318