| Taking oil-tea camellia seed oil as raw material, the pseudoternary phase diagram method was used to optimize the formula of the microemulsion and its stability was analyzed. The pseudoternary phase diagrams of microemulsion in the presence of different co-surfactants, mass ratio of surfactant to co-surfactant (Km value) and temperatures were constructed by calculating and comparing the microemulsion area. The microemulsion type of oil-tea camellia seed oil was divided by conductivity method, finally its stability was analyzed. The results showed that the optimal preparation conditions of oil-tea camellia seed oil microemulsion with maximum water dosage were obtained as follows: oil phase oil-tea camellia seed oil and isopropyl myrisate(mass ratio 1∶?2) used as oil phase accouting for 34% of the system, water dosage 15%. Tween80 and Span80(mass ratio 4∶?1) used as surfactant, n-butanol as co-surfactant, Km value 4∶?1, mass ratio of mixed surfactant to oil phase 6∶?4, preparation temperature 25?℃. Under these conditions, The microemulsion obtained was a thermodynamically stable system with centrifugal stability, storage stability and salt and alkali resistance. |
