Author(s): Fatma Guesmi, Issam Saidi and Ahmed Landoulsi

Abstract: To delineate the variability of bioactive compounds extracted from the aerial parts of Thymus algeriensis essential oil collected from four mounts in Tunisia, we investigated its amounts. Chemical Variations in the terpenes of the aerial parts essential oils of wild Thymus algeriensis, which were grown in four sampling sites, were examined by GC-MS. Our finding suggested that the essential oil of four populations contain high amount of terpenic compounds. Results show that this specie contain a high percentage of eucalyptol (9.36 o 13.37%) and camphor (6.50 o 17.64%). Soil edaphic and bioclimatic condition induce the diversity of bioactive compounds of 4 populations of Thymus.