Curcumin 98% Natural100% and pure, verified by State GMP , ISO9001: 2000 Product name:Curcumin Specification:95% Appearance:Brown yellow powder Introduction: Curcumin is the principal curcuminoid of the popular Indian spice turmeric, which is a member of the ginger family (Zingiberaceae). The other two curcuminoids are desmethoxycurcumin and bis-desmethoxycurcumin. The curcuminoids are polyphenols and are responsible for the yellow color of turmeric. Curcumin can exist in at least two tautomeric forms, keto and enol. The enol form is more energetically stable in the solid phase and in solution. Function: ***** be used for boron quantification in the curcumin method. It reacts with boric acid forming a red colored compound, known as rosocyanine. ***** be used as a food coloring. As a food additive Show More