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Activité antibactérienne des extraits d’une algue brune Padina pavonica de la côte méditerranéenne au Liban

Antibacterial activity of brown seaweed extracts of Padina pavonica from the Mediterranean coast of Lebanon

  • Article Original
  • Pharmacognosie
  • Published:
Phytothérapie

Résumé

Le criblage de l’activité antibactérienne in vitro des extraits de Padina pavonica, récoltée sur les côtes méditerranéennes d’El Mina, Tripoli, Liban, a été effectué sur cinq souches cliniques des bactéries: Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Proteus vulgaricus et Enterococcus faecalis. L’activité antimicrobienne a été évaluée par la méthode de diffusion sur des disques de cellulose. Les résultats ont révélé que l’extrait total de Padina pavonica présente une activité importante contre Pseudomonas aeruginosa et Esherichia coli alors qu’aucune activité n’a été enregistrée contre Klebsiella pneumoniae, Proteus vulgaricus et Enterococcus faecalis. Sur les trois extraits de l’algue préparés par extraction successive dans l’éther de pétrole, le chloroforme et le méthanol, l’extrait le plus actif contre Klebsiella pneumoniae et Pseudomonas aeruginosa a été celui obtenu avec l’éther de pétrole. Les extraits obtenus dans le chloroforme et le méthanol n’ont montré aucune activité contre les souches étudiées. Des substances de types terpéniques ont été mises en évidence par CCM uniquement dans l’extrait obtenu par l’éther de pétrole.

Abstract

In vitro antibacterial activity study was conducted on the extracts of Padina pavonica, collected from the shores of El Mina, Tripoli, Lebanon, against clinical origins strains of bacteria (Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Proteus vulgaricus and Enterococcus faecalis). The antibacterial activity was evaluated through the disk diffusion method. The results showed that the total extract of Padina pavonica presented an important activity against Pseudomonas aeruginosa, while no activity was registered against Esherichia coli, Klebsiella pneumonia, Proteus vulgaricus and Enterococcus faecalis. Three extracts of Padina pavonica were obtained with successive extraction in petroleum ether, chloroform and methanol. The most active extract against Klebsiella pneumoniae and Pseudomonas aeruginosa was obtained with the petroleum ether. Extracts obtained with chloroform and methanol showed no activity against the strains selected in this study. Terpenics compounds were revealing by TLC only in the petroleum ether extract.

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Authors and Affiliations

  1. Laboratoire de microbiologie, faculté de santé publique III, université libanaise, hôpital de Tripoli, Tripoli, Liban

    A. Chbani

  2. Laboratoire de biochimie, faculté de santé publique III, université libanaise, hôpital de Tripoli, Tripoli, Liban

    H. Mawlawi

  3. Laboratoire de biochimie marine, faculté de sciences, université Chouaib-Doukkali, BP 20, El-Jadida, Maroc

    S. Etahiri

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  1. A. Chbani
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  2. H. Mawlawi
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  3. S. Etahiri
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Correspondence to A. Chbani.

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Chbani, A., Mawlawi, H. & Etahiri, S. Activité antibactérienne des extraits d’une algue brune Padina pavonica de la côte méditerranéenne au Liban. Phytothérapie 9, 283–286 (2011). https://doi.org/10.1007/s10298-011-0634-5

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  • DOI: https://doi.org/10.1007/s10298-011-0634-5

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