title: Oil constituents of Artemisia nilagirica var. septentrionalis growing at different altitudes.
abstract: Oils of Artemisia nilagirica var. septentrionalis plants growing at different altitudes in Himachal Pradesh, India were hydro-distilled and analyzed by GC-GC/MS. The major constituents of the oil show variation with changes in altitude. At lower, middle and higher altitudes, the major constituents of the oil were caryophyllene oxide (28.6%), borneol (35.8%) and camphor (46.9%), respectively. The percentages of alpha-humulene and trans-beta-guaiene also increased, but the percentage of sabinene, trans-sabinene hydrate, 4-terpineol, caryophyllene oxide and humulene epoxide-II decreased with an increase in altitude. The characteristic compounds observed in the plants from lower altitudes were 2-hexene-1-ol, beta-thujone, thujanol, myrtenol and linalyl acetate, while the higher altitude plants were characterized by the presence of alpha-pinene, beta-pinene, limonene, linalool, gamma-gurijunene, germacrene-D and farnesol.
authors.affiliation: Central Institute of Medicinal and Aromatic Plants, P.O. CIMAP, Lucknow-226015, India.
authors.forename: Flora
authors.initials: F
authors.lastname: Haider
authors.forename: Narendra
authors.initials: N
authors.lastname: Kumar
authors.forename: Ali Arif
authors.initials: AA
authors.lastname: Naqvi
authors.forename: Guru Das
authors.initials: GD
authors.lastname: Bagchi
mesh_terms: D019306:Artemisia / Q000737:chemistry* / Q000254:growth & development; D009822:Oils, Volatile / Q000032:analysis*
chemical_list: D009822:Oils, Volatile