Antimicrobial activity of essential oils extracted from leaves of native Moroccan plants against clinical bacterial isolates

  • Fatima El Malki
  • Kamal Eddaraji
  • Rajae Alloudane
  • Hassane Greche
  • Haiat Essalmani
  • Said Barrijal Faculty of Science and Techniques, Tangier

Abstract

Introduction: Medicinal plants are plentiful of bioactive molecules effective against multi-resistance bacteria. The aims of this study were to assess the in vitro antimicrobial activities of essential oils extracted from three Moroccan aromatic plants.


Methodology: Analysis of essential oils of Origanum compactum, Rosmarinus officinalis and Pelargonium asperum, collected from different localities in Morocco, were performed using a GC-MS spectrophotometry. Antibacterial activity was evaluated in vitro for five clinical multi-resistant isolates.


Results: Origanum showed strong antibacterial activity against tested strains except Pseudomonas aeruginosa while Rosmarinum showed a bactericidal effect against Acinetobacter baumanii, Escherichia coli and Staphylococcus aureus. Pelargonium presented only slight growth inhibition of Staphylococcus aureus on solid medium, but provided bactericidal effect against Acinetobacter baumanii and Staphylococcus aureus. Interestingly, fractions F7 and F8 of Pelargonium which represented only 0.3% and 0.1% of the total mass were found bactericidal respectively against Klebsiella pneumoniae and Pseudomonas aeruginosa.


Conclusions: Ours results showed that the antimicrobial activities were variables depending on the chemical composition of essential oils, the fraction used and the microorganism tested.Essential oils fractionation allows detection of bioactive substances, especially those owning antimicrobial activity, present in small quantities.

Published
Apr 9, 2018
How to Cite
EL MALKI, Fatima et al. Antimicrobial activity of essential oils extracted from leaves of native Moroccan plants against clinical bacterial isolates. The International Arabic Journal of Antimicrobial Agents, [S.l.], v. 8, n. 1, apr. 2018. ISSN 2174-9094. Available at: <http://imed.pub/ojs/index.php/IAJAA/article/view/2319>. Date accessed: 27 sep. 2021. doi: http://dx.doi.org/10.3823/819.
Section
Articles