Determination of chemical components of volatile oil from Marchantia convoluta by GC-MS

Volatile oil was extracted from Marchantia convoluta by steam distillation. 25 peaks were separated and 10 compounds including 5 hydrocarbons and 5 oxygenated compounds were identified by Gas Chromatogra-phy-Mass spectrometry. The main components were norpinane and hedycaryol. The other 8 compounds with contents all over 1 %. It is good to separate non-polar and apolar component in volatile oil from M. convolute on the GC column of moderate polarity.