METHOD FOR EXTRACTING AROMATIC SUBSTANCE FROM TRADITIONAL CHINESE HERB MEDICINES

摘要

The present invention relates to a method for extracting aromatic substance from traditional Chinese herb medicines, the method comprising: a first step, in which licorice, platycodon grandiflorum, rheum genus, mint, atractylodis rhizome alba, cnidium officinale and schizonepeta tenuifolia briquette are dried respectively, and then mixed and crushed; a second step, in which the mixture is placed in a supercritical extraction tank and a supercritical fluid is fed thereto; a third step, in which the pressure and temperature inside the extraction tank are increased to a range of 200 to 500 atm and a range of 30 to 50?, respectively, and then the supercritical extraction tank is maintained in a steady state for 5-7 hours; and a fourth step, in which the internal pressure of the supercritical extraction tank is reduced after 5-7 hours and an extract is obtained from the mixture kept in the tank. As compared with conventional methods for extracting essential oil, the present invention method features a simple process and shorter extraction time, and a composition prepared according to the present invention presents a stable aroma to users. Such herbal aromas offer a composition beneficial to human health, and once the herbal aromas are inhaled into the body they suppress appetite, thereby generating a weight-loss effect.