To compare and analyze essential oil of Amomum tsao-ko extracted by different methods. The essential oil of Amomum tsao-ko were extracted by means of supercritical CO2 extraction and steam distillation respectively, and the obtained samples were analyzed by gas chromatography-mass spectrometry (GC-MS). The yields of volatile oils extracted by steam distillation and CO2 supercritical extraction were 1.65% and 2.18%, respectively. The type and relative content of volatile oil were significantly different. The essential oil extracted by steam distillation method contained 37 chemical components, among which the monoterpenoids account for85.20% of the total essential oil, and the sesquiterpenes components account for 4.77% of the total essential oil. And 43 compounds were identified from essential oil extracted by CO2 supercritical-extraction, with monoterpenoids accounting for 82.54% of total essential oil and sesquiterpenes 6.36%. The types of chemical composition and relative contents of the essential oil of Amomum tsao-ko were varied...

You do not currently have access to this content.