Turmeric is A diarylheptanoid. About Two Centuries Ago, Isolation of a “yellow Coloring-matter” from the Rhizomes of Curcuma Longa (turmeric) & Was Named Curcumin. Turmeric's other Two Curcuminoids are Desmethoxycurcumin and bis-desmethoxy- Curcumin. the Curmore...