DEFINITION

Coptis Species Rhizome consists of the dried rhizome of Coptis chinensis Franch., Coptis deltoidea C.Y.Cheng & P.K.Hsiao, or Coptis teeta Wall. (Fam. Ranunculaceae), with roots removed, collected in autumn. It contains NLT 9.0% and NMT 18% of total quaternary protoberberine alkaloids calculated on the dried basis as the sum of columbamine (C₂₀H₂₀NO₄⁺), jatrorrhizine...