Objective: To investigate effect of demethoxycurcumin on stability of curcumin.
Methods: To add the demethoxycurcumin to pure curcumin, the change of curcumin was determined by HPLC and the dynamics of curcumin degradation was investigated.
Result: The stability both obtained from alcohol and demethoxycurcumin improved the stabilization of curcumin, the demi-period of curcumin prolonged with the addition of demethoxycurcumin.
Conclusion: The commixture of curcumin and demethoxycurcumin are more stable than pure curcumin at the same conditions. Stability of curcumin is improved by demethoxycurcumin,it is crude stabilizing agent.