title: Comparative composition of four essential oils of Oregano used in Algerian and Jordanian folk medicine.
abstract: The essential oils obtained from Origanum glandulosum Desf., collected from two different localities of north-eastern Algeria, Constantine and Jijel, and from O. syriacum var. syriacum grown at El-Aghwar (northern Jordan) and El-Shubak (southern Jordan), were analyzed by GC-MS. p-Cymene (6.6% and 7.5%) and gamma-terpinene (13.4% and 14.5%) were found in O. glandulosum grown at Constantine and Jijel, respectively, in addition to the major components thymol (34.2%, 51.1%) and carvacrol (30.5%, 6.8%). The oil of O. syriacum L. var syriacum (Boiss.) Ietswaart from El-Shubak was mainly represented by thymol (51.8%) and carvacrol (34.4%), while the oil from El-Aghwar was a thymol-chemotype (72.4%), along with gamma-terpinene (7.8%) and p-cymene (5.4%).
authors.affiliation: Laboratoire d'Obtention de Substances Thérapeutiques (L.O.S.T), Faculté des Sciences, Université Mentouri - Constantine, Campus Chaabat Ersas, 25000 Constantine, Algeria.
authors.forename: Djemaa
authors.initials: D
authors.lastname: Berrehal
authors.forename: Tarek
authors.initials: T
authors.lastname: Boudiar
authors.forename: Lakhal
authors.initials: L
authors.lastname: Hichem
authors.forename: Assia
authors.initials: A
authors.lastname: Khalfallah
authors.forename: Ahmed
authors.initials: A
authors.lastname: Kabouche
authors.forename: Ahmad
authors.initials: A
authors.lastname: Al-Freihat
authors.forename: Alireza
authors.initials: A
authors.lastname: Ghannadi
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Sajjadi
authors.forename: Mitra
authors.initials: M
authors.lastname: Mehrabani
authors.forename: Jawad
authors.initials: J
authors.lastname: Safaei-Ghomi
authors.forename: Zahia
authors.initials: Z
authors.lastname: Kabouche
mesh_terms: D000462:Algeria; D007597:Jordan; D008519:Medicine, Traditional; D009822:Oils, Volatile / Q000737:chemistry*; D031341:Origanum / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*
chemical_list: D009822:Oils, Volatile; D010938:Plant Oils