title: Volatile constituents of two rare subspecies of Thymus praecox.
abstract: Hydrodistilled essential oil and the corresponding headspace volatiles of Bosnian wild growing Thymus praecox ssp. polytrichus (A. Kern. Ex Borbàs) Jalas and Thymus praecox ssp. skorpilii (Velen.) Jalas were subjected to capillary GC-MS analysis. This work presents a detailed essential oil analysis of these two rare Thymus subspecies from Bosnia, as well as the very first report on their headspace composition. Eighty-seven volatile constituents were identified in four samples. Two alcohols were the major constituents in the essential oil of T. praecox ssp. polytrichus, a monoterpene, linalool (13.9%), and a sesquiterpene, (E)-nerolidol (10.4%), while linalyl acetate (36.7%) and linalool (22.7%) were the most abundant volatiles in the corresponding headspace sample. Oxygenated monoterpenes (57.5%) predominate in the essential oil of T. praecox ssp. skorpilii with linalyl acetate (28.7%) and linalool (14.4%) as the main representatives. Headspace sample of this subspecies also showed richness in linalyl acetate (52.4%), while the second most abundant compound was alpha-pinene (14.5%), a monoterpene hydrocarbon.
authors.affiliation: University of Sarajevo, Faculty of Science, Department of Chemistry, Zmaja od Bosne 33-35, 71000 Sarajevo, Bosnia and Herzegovina.
authors.forename: Danijela
authors.initials: D
authors.lastname: Vidic
authors.forename: Sanja
authors.initials: S
authors.lastname: Cavar
authors.forename: Marija Edita
authors.initials: ME
authors.lastname: Solić
authors.forename: Milka
authors.initials: M
authors.lastname: Maksimović
mesh_terms: D000080462:Acyclic Monoterpenes; D008401:Gas Chromatography-Mass Spectrometry; D039821:Monoterpenes / Q000737:chemistry; D009822:Oils, Volatile / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry; D046930:Thymus Plant / Q000737:chemistry*
chemical_list: D000080462:Acyclic Monoterpenes; D039821:Monoterpenes; D009822:Oils, Volatile; D012717:Sesquiterpenes; C074463:linalyl acetate; C018584:linalool