Curcumin

Curcumin is a bright yellow chemical produced by plants of the curcuma longa species. It is the principal curcuminoid of turmeric (curcuma longa), a member of the ginger family, zingiberaceae. It is sold as an herbal supplement, cosmetics ingredient, food flavoring, and food coloring.
Chemically, curcumin is a diarylheptanoid, belonging to the group of curcuminoids, which are phenolic pigments responsible for the yellow color of turmeric.