[Study on ingredients of essential oils of Curcuma wenyujin extracted by supercritical-CO2 fluid extraction and steam distillation].

Objective To compare the ingredients of essential oils of Curcuma wenyujin extracted by supercritical-CO2 fluid extraction and by steam distillation. Method GC-MS was applied in this experiment. Result The ingredients and physical and chemical properties of essential oils of C. wenyujin extracted by supercritical-CO2 fluid extraction and by steam distillation are similar. Conclusion Supercritical-CO2 fluid extraction is better than steam distillation in extraction time, power consumption, recovery and purity.