Journal of
Medicinal Plants Research

  • Abbreviation: J. Med. Plants Res.
  • Language: English
  • ISSN: 1996-0875
  • DOI: 10.5897/JMPR
  • Start Year: 2007
  • Published Articles: 3778

Full Length Research Paper

Variation of thymol, carvacrol and thymoquinone production from wild and cultivated Origanum syriacum of South Lebanon

Salam Zein, Sanaa Awada*, Amal Al-Hajje, Samar Rachidi, Pascale Salameh and Hussein Kanaan
Laboratory of Biotechnology of Natural Substances and Health products, Faculty of Pharmacy, Lebanese University, Beirut, Lebanon.
Email: [email protected]

  •  Accepted: 30 November 2011
  •  Published: 09 March 2012


Essential oils from wild and cultivated Origanum syriacum were prepared monthly by hydrodistillation. Their composition in thymol, carvacrol and thymoquinone were studied byGas chromatography–mass spectrometry (GC-MS). Essential oils extraction ranged from 3.82 and 3.44% in February to 8.4 and 6.8% in may, from cultivated and wild samples respectively. The essential oil composition for all samples was dominated by carvacrol. The cultivated populations harvested in April just before flowering had a higher peak content in thymol (31.5%) and carvacrol (49.8%). Thymoquinone was detected in traces only in February, and was not found in any other population studied from O. syriacum of South Lebanon.


Key words: Origanum syriacum, essential oil, carvacrol, thymol, thymoquinone.