DEFINITION

Powdered Echinacea purpurea consists of the dried rhizome and roots of Echinacea purpurea (L.) Moench (Fam. Asteraceae), harvested in the fall after three or more years of growth, and reduced to powder. It contains NLT 0.5% of total phenols, calculated on the dried basis as the sum of caftaric acid (C₁₃H₁₂O₉), chicoric acid (C₂₂H₁₈O₁₂), and chlorogenic acid (C₁₆H₁₈O₉). It contains NLT 0.025% of alkamides calculated as dodecatetraenoic acid isobutylamides (C₁₆H₂₅NO).