| dc.description.abstract | The botanic genera Pistacia are groups around ffeen species of shrubs that
belong to the Anacardiaceae family which is believed to have originated in
Asian or Mediterranean region. P. lentscus is abundant species of the Pistacia genus encountered in the forest region of Ouarsenis mount (Northwest of
Algeria), exactly in the natonal park of Thniet El Had in the Wilaya of
Tissemsilt in Algeria. In the present study, chemical compositon and antbacterial actvites of essental oil (EO) of P. lentscus were evaluated. The EO
was isolated and analyzed by gas chromatography-mass spectrometry (GCMS). The minimum inhibitory concentraton (MIC) was determined using 6
strains of Gram-positve and negatve bacteria. The antbiogram was made
following the gliosis-environment diffusion method and which makes it possible to determinate bacteria’s sensibility to antbiotcs. From a exponental
culture (18 to 24 hours), a bacterial suspension was prepared and wellhomogenized aferwards. The opacity was adjusted equivalent to 0.5 McF
(McFarland). Based on the GC-MS analysis, thirty-fve compounds representng 100 % of the total oil compositon were identfed. The essental oils
could be explored to test their antmicrobial actvity, especially against some
bacteria that cause alimentary intoxicatons. The results revealed that the
essental oil exhibited strong levels of antbacterial actvity against the tested
microorganism regarding the MIC values, Salmonella sp was found to be the
most sensitve strain (inhibiton zone 23cm MIC 1.25%). Based on the fndings of the present study, new antbacterial agents could be developed, and
the use of P. lentscus should be promoted in the traditonal treatment of
ailments. | en_US |