Comparative composition of four essential oils of Oregano used in Algerian and Jordanian folk medicine

Nat Prod Commun. 2010 Jun;5(6):957-60.


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%).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algeria
  • Jordan
  • Medicine, Traditional*
  • Oils, Volatile / chemistry*
  • Origanum / chemistry*
  • Plant Oils / chemistry*


  • Oils, Volatile
  • Plant Oils