Study on stability of curcumin displayed that the degradation of curcumin was strong in Solutol 3 g / L + PBS pH = 6.8 solution at 37 °C, but weak in solutions of Solutol 3 g / L + PBS pH = 6.8 at 25 °C and EtOH + PVP K30 + PBS pH = 6.8 at 25 °C and 37 °C.