DOI: 10.36347/sajb.2018.v06i11.004

Pages: 704-712

The essential oil, isolated by hydrodistillation, from the aerial parts of Elaeoselinum thapsioides collected during the flowering phase from Setif region, is analezed by GS/GC-MS. Oil gas chromatography revealed the presence of 32 chemical components representing an average of 99.55% of the total oil. The populations of E. thapsioides studied are very heterogeneous in the chemical composition of essential oils, it shows significant differences. The population of Tachouda is characterized by a high rate of myrcene (26.56%), cymene-ortho (12.43%), α-pinene (11.68%), sabinene (10.44%), β-pinene (6.40%), limonene (5.04%), γ-terpinene (4.45%) and germacrene-D (3.72%), while the population of Megres shows the presence of limonene (36.30%), α-pinene (31.50%), trimethyl benzalhyde-(2, 3, 4) (5.83%), Δ3-carene (3.50%) and myrcene (3.50%). The Antibacterial activity of essential oils of E. thapsioides is evaluated by the disc method. The oil has no effect against P. aeruginosa ATCC 2785 and K. pneumonia ATCC 700603, while the essential oils have a high activity against Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922.