Application of New Supercritical Extraction Technology in Extraction and Separation of Effective Components of Traditional Chinese Medicine

Supercritical CO2 extraction technology uses supercritical fluid as extractant to extract and separate effective components from plants liquid or solid. At present, is widely used in fluid, with a critical temperature of 31.265 °C pressure 7.18 MPa. The conditions are easy reach. In state, the density very sensitive changes pressure, separation technologies can be divided into two types: membrane traditional separation. methods steam distillation, sublimation, cold soaking, precipitation, percolation, decocting method Soxhlet extraction, etc. These have certain limitations. this paper, SFE combined modern analytical techniques, such gas chromatography, high performance thin layer chromatography-mass spectrometry, etc., so that component analysis carried out more efficiently quickly. Because above advantages, especially beneficial Chinese medicine its preparations.