title: Essential-oil composition of the Tunisian endemic cypress (Cupressus sempervirens L. var. numidica TRAB.).
abstract: The essential oils isolated from leaves, wood, and cones of the Tunisian endemic cypress Cupressus sempervirens L. var. numidica Trab. collected from three natural populations were characterized by GC-FID and GC/MS analyses. In the wood, leaf, and cone oils, 38, 35, and 26 constituents, representing 94.4, 97.8, and 98.5% of the total oil composition, respectively, were identified. Monoterpenes constituted the major fraction of the oils from all organs and for all populations. The oils were found to be of an α-pinene (64.2%)/δ-car-3-ene (11.1%) chemotype with considerable contents of α-humulene (3.4%) in the leaf oil, cedrol (2.8%) in the wood oil, and sabinene (3.2%) in the cone oil, respectively. α-Pinene, δ-car-3-ene, limonene, carvacrol methyl ether, α-humulene, and α-amorphene were the main components that differentiated the oils of the three organs in the cypress of Makthar.
authors.affiliation: National Institute of Agronomy of Tunis, 43 avenue Charles Nicolle, 1082 Tunis, Tunisia. kaouther.elhamrouni@laposte.net
authors.forename: Kaouther
authors.initials: K
authors.lastname: El Hamrouni-Aschi
authors.forename: Mohamed Larbi
authors.initials: ML
authors.lastname: Khouja
authors.forename: Mohamed
authors.initials: M
authors.lastname: Boussaid
authors.forename: Noureddine
authors.initials: N
authors.lastname: Akrimi
authors.forename: Lamjed
authors.initials: L
authors.lastname: Toumi
mesh_terms: D016000:Cluster Analysis; D029781:Cupressus / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D014416:Tunisia
chemical_list: D009822:Oils, Volatile