Beta Carotene

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.

Piperine, along with its isomer chavicine, is the alkaloid responsible for the pungency of black pepper and long pepper. It has been used in some forms of traditional medicine.