Curcuminoid

A curcuminoid is a linear diarylheptanoid, a relatively small class of plant secondary metabolites that includes curcumin, demethoxycurcumin, and bisdemethoxycurcumin, all isolated from turmeric (curcuma longa).

No covalent bonds are present between the cyclodextrins and the curcuminoids so they are easily released from the complex by simple solvent effects.

[1] The curcumin derivatives demethoxycurcumin and bisdemethoxycurcumin may have antioxidant activities useful in maintaining shelf-life of food products.

[2] Curcumin is mainly produced in industry as a pigment by using turmeric oleoresin as the starting material which curcuminoids can be isolated from.

Curcumin, which shows positive results in most drug discovery assays, is regarded as a false lead that medicinal chemists include among "pan-assay interference compounds".