[GC-MS analysis of essential oils from rhizomes of Atractylodes lancea (Thunb.) DC. and A. chinensis (DC.) Koidz].

Objective:To analyze the constituents from the rhizomes of Atractylodes lancea and A. chinensis in essential oils.Method:GC-MS method was used.Result:32 and 29 compouds were identified respectively.Conclusion:The main constituents in the essential oils from the rhizome of A. chinensis are β-eudesmol or a mixture of β-eudesmol and atractylone, whereas from that of A. lancea are hinesol, a mixture of β-eudesmol and atractylone,and atractylone.