Curcumin, which comprises most of turmeric's overall content, is the principal constituent of the curcuminoid class of compounds. demethoxycurcumin, bisdemethoxycurcumin, and cyclocurcumin are the other three, and while they do make a small contribution, it is not nearly as great as curcumins. Since curcumin dominates the action, these auxiliary curcuminoids merely support characters in the giant game.