Isothymol in Ajowan Essential Oil

Ajowan is a popular spice that is used in folk medicine in Algeria. Most studies reported that thymol is the main component of the seed oil. Isothymol was reported to be a constituent of essential oil isolated from aerial parts. Using plants harvested in five different locations in north western Algeria, every two weeks during the flowering stage, we demonstrated that isothymol was the major component when the plant was collected near the sea at low altitude and at the beginning of the flowering stage. In other cases, thymol is the predominant constituent.

[1]  F. Chemat,et al.  An original solvent free microwave extraction of essential oils from spices , 2004 .

[2]  N. Kambouche,et al.  Composition of the Volatile Oil from the Aerial Parts of Trachyspermum ammi (L.) Sprague from Oran (Algeria) , 2003 .

[3]  M. Srivastava,et al.  GC-MS investigation and antimicrobial activity of the essential oil of Carum copticum Benth & Hook , 1999 .

[4]  P. Faridi,et al.  Carum copticum Benth. & Hook., essential oil chemotypes , 2007 .

[5]  A. Allameh,et al.  Antimycotoxigenic characteristics of Rosmarinus officinalis and Trachyspermum copticum L. essential oils. , 2008, International journal of food microbiology.

[6]  F. Tomi,et al.  Computer-aided identification of individual components of essential oils using Carbon-13 NMR spectroscopy , 1995 .

[7]  P. Leclercq,et al.  Composition of the seed oil of Trachyspermum ammi (L.) Sprague from Northeast India , 1998 .

[8]  J. Casanova,et al.  13C NMR AS A TOOL FOR IDENTIFICATION OF INDIVIDUAL COMPONENTS OF ESSENTIAL OILS FROM LABIATAE - A REVIEW. , 2006 .

[9]  N. Reddy,et al.  Non-invasive localization of thymol accumulation in Carum copticum (Apiaceae) fruits by chemical shift selective magnetic resonance imaging. , 2002, Annals of botany.

[10]  S. Rezzi,et al.  Direct Identification and Quantitative Determination of Acidic and Neutral Diterpenes Using 13C-NMR Spectroscopy. Application to the Analysis of Oleoresin of Pinus nigra , 2002 .

[11]  Gurdip Singh,et al.  Chemical constituents, antifungal and antioxidative effects of ajwain essential oil and its acetone extract. , 2004, Journal of agricultural and food chemistry.

[12]  Y. Yamini,et al.  Comparison of essential oil composition of Carum copticum obtained by supercritical carbon dioxide extraction and hydrodistillation methods , 2004 .

[13]  B. M. Lawrence.  Progress in Essential Oils , 2009 .

[14]  H. Laouer,et al.  Composition and Antimicrobial Activity of Ammoides pusilla (Brot.) Breistr. Essential Oil , 2003 .

[15]  M. Vanhaelen,et al.  Isolation and antimicrobial activity of two phenolic compounds from Pulicaria odora L. , 2005, Journal of ethnopharmacology.

[16]  J. Scheffer,et al.  Comparison of isolation procedures for essential oils , 1979 .