Optimization Of Extraction Conditions Of Essential Oil From Latifolia Miq Roots And Stems With Supercritical CO2 Fluid

Studying on the extraction process of essential oil from Latifolia Miq roots and stems by Supercritical CO2 extraction. The effects on extracting ratio were investigated by using single. factor test, adding content of grinding fineness of raw materials, extracting temperature, extracting pressure and extracting time. The optimum extraction condition was determined by orthogonal test. The results showed that the optimum condition of the extraction was as follows: grinding fineness 90 mesh, extracting temperature 45 degrees C, extracting pressure 20 MPa and extracting time 2.5 h.