The antimicrobial activity of essential oil of Pinus halepensis tree from Ghazaouet (Tlemcen) against bacteria (Staphylococcus aureus ATCC25 923, Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC25 922 et ATCC25 921, Bacillus cereus ATCC 11778) was determined.It was evaluated by two methods, disc diffusion and broth dilution. Essential oil of Pinus halepensis showed moderate for the whole strains tested expect P.aeruginosa et E.coli who were revelated very resistants.
