Analysis of Volatile Oil From Apocynum venetum L. by Gas Chromatography Mass Spectrometry

The volatile oil was extracted from Apocynum venetum L.by using extracted device of volatile oil. The content of the volatile oil was 0.02%. The chemical components of the volatile oil were examined by gas chromatography mass spectromentry (GC/MS), 52 constituents were separated and 25 compounds were identified. The identified compounds consitute more than 85.38% of the total ion current. The relative content of the components were determined with peak area normalization method, the major constituents of the volatile oil are caryophyllene oxide(10.57%), 1 α terpineol(10.38%), 3 hexen 1 olbenzoate(6.45%), 3,7,11,15 tetramethyl 2 hexadecen 1 ol(5.99%), β damascenone( 5.85 %), trans farnesol(5.27%), 2 methyl 5 (1 methylethyl)phenol(4.77%), pulegeone( 4.25 %).