Analysis of essential oil in cultivated Ephedra Sinica Stapf in Gansu Province / 中成药

ABSTRACT

AIM: To analyze the chemical constituents of essential oil in Ephedra Sinica Stapf from Gansu Province. METHODS: The essential oil in Ephedra Sinica Stapf was extracted by steam distillation and analyzed by gas chromatography-mass spectrometry(GC-MS). RESULTS: 71 Compounds were identified from Ephedra Sinica Stapf of 3 different sources(Minqin,Zhenyuan and Gulang County),and contained 28 same components such as tetramethylpyrazine、linalool、?-terpineol、4-terpineol、d-?-terpineol、hexadecanoic acid and so on.The contents of d-?terpineol and hexadecanoic acid in Ephedra Sinica Stapf were the highest. CONCLUSION: Essential oils in Ephedra Sinica Stapf from Gansu Province do not contain 1-?-terpineol.