COMPARISON OF CHEMICAL CONSTITUENTS OF ESSENTIAL OILS FROM ELSHOLTZIA SPLENDENS AND CULTIVATED MOSLA CHINENSIS BY GC-MS ANALYSIS

Xiangru(Labiatae)is a well-known drug used in Chinese traditionalmedicine. Chemical constituents of essential oils from Elsholtzia splendens and cultivated Mosla chinensis were compared by GC-MS/DS combination on SE-54 capillary column(30 m ×0.32 mm ). Forty-three components were identified in Elsholtzia splendens Nakaiex F. Maekawa. The total content of the components in the essential oil was found to be90.61%. Among them the major constituents are elsholtzia ketone (80.81% ). Fifty com-ponents were identified in cultivated Mosla chinensis, with a total content of 93.91% in theessential oil. The major constituents are carvacrol (51.11%), thymol(22.00%), and etc.