Powdered Echinacea purpurea
» Powdered Echinacea purpurea is Echinacea purpurea Root reduced to a powder or very fine powder.
Packaging and storage— Preserve in well-closed, light-resistant containers.
Labeling— The label states the Latin binomial and, following the official name, the part of the plant from which the article was derived.
Botanic characteristics— Under a microscope, the following characteristics are observed: vessels (80 × 30 µm) with slanted end walls and spiral or pitted secondary walls; rectangular cork cells (150 × 60 µm) with brown inclusions; rectangular parenchymatous cells (120 × 30 µm), some pitted; elongated fiber cells having a narrow lumen with funnel-shaped end (20 to 40 µm wide); polygonal sclereids; a melanogenic layer of variable thickness, interspersed between the cell walls of the parenchyma; and lignified sclereids, vessels, and fibers. Starch is present; calcium oxalate and inulin crystals are absent.
Other requirements— It meets the requirements of the tests for Identification, Loss on drying, Total ash, Acid-insoluble ash, Pesticide residues, Heavy metals, Content of total phenols, and Content of alkamides under Echinacea purpurea Root.
Auxiliary Information— Please check for your question in the FAQs before contacting USP.
Topic/Question Contact Expert Committee
Monograph Maged H. Sharaf, Ph.D.
Senior Scientist
(DSB05) Dietary Supplements - Botanicals
Reference Standards Lili Wang, Technical Services Scientist
USP32–NF27 Page 1001
Pharmacopeial Forum: Volume No. 26(6) Page 1593
Chromatographic Column—
Chromatographic columns text is not derived from, and not part of, USP 32 or NF 27.