Analysis of Components in Volatile Oil by Different Extraction Methods of Angelica polymorpha Maxim.

The volatile oil of Angelica polymorpha Maxim was obtained by different extraction methods such as vapor,ehter,ultrasonic and microwave extraction.The main components of volatile oil and their relative contents were identified and determined by GC-MS.Compared with the productivity,the rate of volatile oil extracted by these four methods was 2.29%,3.27%,4.13% and 3.78%.21,24,38 and 23 volatile components as listed in table 1 were identified,where nine components were ligustilide,α-bisabolol,octanal,2-nonanone,nonane,2-methyloctane,hexadecanoyl methylate,(-)-glubulol,3-methyloctane.The most abundant component was ligustilide obtained by the above-mentioned four methods.The components of volatile oil in Angelica polymorpha Maxim.with different distillation methods were all different.The extraction rates by ultrasonic and microwave extraction were higher and the components were much more comparing with other methods.