title: [GC-MS analysis of constituents of essential oils from stems of Ephedra sinica Stapf, E. intermedia Schrenk et C.A. Mey. and E. equisetina Bge].
abstract: The essential oils from the dried stems of Ephedra sinica, E. intermedia and E. equisetina were analyzed by GC-MS qualitatively and GC quantitatively. One hundred and twenty-seven constituents were identified, l-alpha-terpineol (31.64%) in E. sinica, 1,4-cineole (12.80%) in E. intermedia and hexadecanoic acid (26.22%) in E. equisetina being the main constituents.
authors.affiliation: Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medicine, Beijing.
authors.forename: L
authors.initials: L
authors.lastname: Ji
authors.forename: Z
authors.initials: Z
authors.lastname: Xu
authors.forename: G
authors.initials: G
authors.lastname: Pan
authors.forename: G
authors.initials: G
authors.lastname: Yang
mesh_terms: D032462:Cycadopsida / Q000737:chemistry; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D039821:Monoterpenes; D009822:Oils, Volatile / Q000737:chemistry / Q000302:isolation & purification*; D019308:Palmitic Acid / Q000737:chemistry / Q000302:isolation & purification; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D004365:Drugs, Chinese Herbal; D039821:Monoterpenes; D009822:Oils, Volatile; D013729:Terpenes; C016775:alpha-terpineol; D019308:Palmitic Acid; C058951:1,4-cineole