Supercritical Carbon Dioxide Extraction of Volatile Flavor Compounds from Artemisia annua

摘要

The aromatic compounds of Artemisia annua were extracted by supercritical carbon dioxide. Supercritical carbon dioxide extraction of volatile flavor compounds from Artemisia annua was performed at pressure 150bar and temperature 40°C. The flow rate of CO_2 was 20 g/min and the flow rate of ethanol as an entrainer was 5% of CO_2 used. The extraction time was 1 h. The trapped sample by cold trap 1 and 2 was analyzed by GC-MS. Identified major volatile compounds were artemisia ketone, artemisia alcohol, arteannuic acid, 1,8-cineole and so on. Artemisia ketone content was found in highest amount in both cold traps 1 and 2. Artemisia ketone was present in moderate amount. Arteannuic acid was present in small amount.