title: Essential-Oil Constituents and Alkanes of Cephalaria ambrosioides Roem. & Schult. (Family Caprifoliaceae, Subfamily Dipsacaceae) and (Chemo)taxonomic Discernment of the Subfamilies Dipsacaceae and Morinaceae.
abstract: Herein, the results of the first study of the volatile and alkane profiles of Cephalaria ambrosioides Roem. & Schult. (Caprifoliaceae, subfamily Dipsacaceae) were reported. The GC-FID and GC/MS analyses of the essential oils hydrodistilled from leaves and stems (CA1) and flowers (CA2) of C. ambrosioides allowed the identification of 284 different components. The main compounds of the studied oil samples were palmitic acid (24.3 and 32.5% for CA1 and CA2, resp.), hexahydrofarnesyl acetone (1.4 and 10.8% for CA1 and CA2, resp.), (Z)-hex-3-en-1-ol (7.0 and <0.1% for CA1 and CA2, resp.), and linoleic acid (1.9 and 6.5% for CA1 and CA2, resp.). Essential-oil compositional data of selected plant species belonging to the Dipsacaceae (15) and Morinaceae (2) subfamilies were used to resolve taxonomical ambiguities regarding the genus Cephalaria and its infrageneric relations, especially concerning the subfamily Morinaceae (formerly a genus within Dipsacaceae). The results of multivariate statistical analyses (25 different essential-oil samples) supported the exclusion of Morina species from the Dipsacaceae subfamily. The relative abundances of alkanes from n-, iso-, and anteiso-series followed a (distorted) Gaussian-like distribution and suggested that the biosyntheses of n- and branched alkanes in C. ambrosioides are possibly not controlled by the same elongase. Also, the obtained results suggested that there was a difference in the biosynthesis/accumulation of alkanes in the vegetative and reproductive parts of C. ambrosioides.
authors.affiliation: Department of Pharmacology and Toxicology, Faculty of Medical Sciences, University of Kragujevac, S. Markovića 69, RS-34000 Kragujevac.
authors.forename: Dušan R
authors.initials: DR
authors.lastname: Vukićević
authors.affiliation: Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, RS-34000 Kragujevac.
authors.forename: Dragana D
authors.initials: DD
authors.lastname: Stevanović
authors.affiliation: Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, RS-18000 Niš, (phone: +381-62-8049210; fax: +381-18-533014).
authors.forename: Marija S
authors.initials: MS
authors.lastname: Genčić
authors.affiliation: Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, RS-18000 Niš, (phone: +381-62-8049210; fax: +381-18-533014).
authors.forename: Polina D
authors.initials: PD
authors.lastname: Blagojević
authors.affiliation: Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, RS-18000 Niš, (phone: +381-62-8049210; fax: +381-18-533014). nikoradulovic@yahoo.com.
authors.forename: Niko S
authors.initials: NS
authors.lastname: Radulović
mesh_terms: D000473:Alkanes / Q000032:analysis*; D027922:Caprifoliaceae / Q000737:chemistry*; D049917:Dipsacaceae / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D009822:Oils, Volatile / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry
chemical_list: D000473:Alkanes; D009822:Oils, Volatile
keywords: Cephalaria ambrosioides; Chemotaxonomy; Dipsacaceae; Essential-oil composition; Morinaceae; Multivariate statistical analyses