Essential oil from gum of Pistacia atlantica Desf.: Screening of antimicrobial activity

The essential oil from the gum of Pistacia atlantica Desf. grown in Algeria was obtained by the hydrodistillation method; and its antimicrobial activities against the growth of clinical isolates of Staphylococcus aureus; Escherichia coli and Streptococcus pyogenes were evaluated using three different methods; agar disc diffusion and dilution broth methods and minimum inhibitory concentration (MIC) which was subsequently; determined. The results of the study revealed that essential oil resin of P. atlantica has antimicrobial activity against gram-positive and -negative bacteria which are resistant to commonly used antimicrobial agents; and they were considerably dependent on concentration

Antimicrobial activity evaluation of the oleoresin oil of Pistacia vera L

The hydrodistilled essential oils from Pistacia vera.L stem exudates have been tested against three bacteria (Escherichia coli; Staphylococcus aureus and Proteus spp) using three methods: agar disc diffusion; determination of MIC (minimum inhibitory concentration) and in the liquid phase by Maruzella method. The results obtained showed that essential oil resin of P. vera L. has antimicrobial activity against gram negative bacteria (E. coli and Proteus spp.) as well as gram positive bacteria (S. aureus); when Proteus spp. was the greatest inhibited of all the strains tested