Curcumin (Curcuminoid) is a kind of yellow and slightly acidic diphenyl heptane substances, is the nature of the very rare diketone colored substances, It mainly includes Curcumin, demethoxycurcumin, bisdemethoxycurcumin and tetrahydrocurcumin, demethoxycurcumin and bisdemethoxycurcumin. Curcumin Read More