title: Flower and root oils of the tunisian Daucus carota L. ssp. maritimus (Apiaceae): integrated analyses by GC, GC/MS, and 13C-NMR spectroscopy, and in vitro antibacterial activity.
abstract: The essential oils from flowers and roots of Daucus carota L. ssp. maritimus were obtained by hydrodistillation and analyzed by combination of GC, GC/MS, and (13)C-NMR. The chemical composition of the flower and root oils of this subspecies is reported here for the first time. Thirty-two and six compounds were identified in flower and root oils, respectively. A remarkable difference was found between the constituent percentages of the two organs. The chemical composition of the essential oil from flowers was characterized by a high proportion of monoterpene hydrocarbons (68.4%) and belonged to the sabinene (4; 51.6%) chemotype. The oxygenated monoterpenes represented the second major fraction of the same oil among which terpinen-4-ol (11.0%) was the predominant compound. Root oil exhibited a surprisingly different composition. Phenolic derivatives (76.3%), myristicin (31; 29.7%), and dillapiole (32; 46.6%) constituted the main fraction. The antibacterial effect resulted in the inhibition of a series of common human pathogenic bacteria, and of some clinically and environmentally isolated strains with significant MIC and MBC values.
authors: Laboratoire de Chimie des Substances Naturelles et de Synthèse Organique (99/UR/12-26), Faculté des Sciences de Monastir, Université de Monastir, Avenue de l'Environnement, Monastir, 5000, Tunisie.
authors: Aymen
authors: A
authors: Jabrane
authors: Hichem Ben
authors: HB
authors: Jannet
authors: Féthia
authors: F
authors: Harzallah-Skhiri
authors: Maha
authors: M
authors: Mastouri
authors: Joseph
authors: J
authors: Casanova
authors: Zine
authors: Z
authors: Mighri
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D002247:Carbon Isotopes / Q000737:chemistry; D002849:Chromatography, Gas; D018552:Daucus carota / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D009822:Oils, Volatile / Q000737:chemistry* / Q000494:pharmacology; D018517:Plant Roots / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D002247:Carbon Isotopes; D009822:Oils, Volatile