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Chemical composition and antibacterial activity of essential oils from the Tunisian Allium nigrum L.

The chemical composition of the essential oils of different Allium nigrum L. organs and the antibacterial activity were evaluated. The study is particularly interesting because hitherto there are no reports on the antibacterial screening of this species with specific chemical composition. Therefore,...

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Autores principales: Rouis-Soussi, Lamia Sakka, Ayeb-Zakhama, Asma El, Mahjoub, Aouni, Flamini, Guido, Jannet, Hichem Ben, Harzallah-Skhiri, Fethia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Leibniz Research Centre for Working Environment and Human Factors 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4463966/
https://www.ncbi.nlm.nih.gov/pubmed/26417280
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author Rouis-Soussi, Lamia Sakka
Ayeb-Zakhama, Asma El
Mahjoub, Aouni
Flamini, Guido
Jannet, Hichem Ben
Harzallah-Skhiri, Fethia
author_facet Rouis-Soussi, Lamia Sakka
Ayeb-Zakhama, Asma El
Mahjoub, Aouni
Flamini, Guido
Jannet, Hichem Ben
Harzallah-Skhiri, Fethia
author_sort Rouis-Soussi, Lamia Sakka
collection PubMed
description The chemical composition of the essential oils of different Allium nigrum L. organs and the antibacterial activity were evaluated. The study is particularly interesting because hitherto there are no reports on the antibacterial screening of this species with specific chemical composition. Therefore, essential oils from different organs (flowers, stems, leaves and bulbs) obtained separately by hydrodistillation were analyzed using gas chromatography–mass spectrometry (GC–MS). The antibacterial activity was evaluated using the disc and microdilution assays. In total, 39 compounds, representing 90.8-96.9 % of the total oil composition, were identified. The major component was hexadecanoic acid (synonym: palmitic acid) in all the A. nigrum organs oils (39.1-77.2 %). We also noted the presence of some sesquiterpenes, mainly germacrene D (12.8 %) in leaves oil) and some aliphatic compounds such as n-octadecane (30.5 %) in bulbs oil. Isopentyl isovalerate, 14-oxy-α-muurolene and germacrene D were identified for the first time in the genus Allium L. All the essential oils exhibited antimicrobial activity, especially against Enterococcus faecalis and Staphylococcus aureus. The oil obtained from the leaves exhibited an interesting antibacterial activity, with a Minimum Inhibitory Concentration (MIC) of 62.50 µg/mL against these two latter strains. The findings showed that the studied oils have antibacterial activity, and thus great potential for their application in food preservation and natural health products.
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spelling pubmed-44639662015-09-28 Chemical composition and antibacterial activity of essential oils from the Tunisian Allium nigrum L. Rouis-Soussi, Lamia Sakka Ayeb-Zakhama, Asma El Mahjoub, Aouni Flamini, Guido Jannet, Hichem Ben Harzallah-Skhiri, Fethia EXCLI J Original Article The chemical composition of the essential oils of different Allium nigrum L. organs and the antibacterial activity were evaluated. The study is particularly interesting because hitherto there are no reports on the antibacterial screening of this species with specific chemical composition. Therefore, essential oils from different organs (flowers, stems, leaves and bulbs) obtained separately by hydrodistillation were analyzed using gas chromatography–mass spectrometry (GC–MS). The antibacterial activity was evaluated using the disc and microdilution assays. In total, 39 compounds, representing 90.8-96.9 % of the total oil composition, were identified. The major component was hexadecanoic acid (synonym: palmitic acid) in all the A. nigrum organs oils (39.1-77.2 %). We also noted the presence of some sesquiterpenes, mainly germacrene D (12.8 %) in leaves oil) and some aliphatic compounds such as n-octadecane (30.5 %) in bulbs oil. Isopentyl isovalerate, 14-oxy-α-muurolene and germacrene D were identified for the first time in the genus Allium L. All the essential oils exhibited antimicrobial activity, especially against Enterococcus faecalis and Staphylococcus aureus. The oil obtained from the leaves exhibited an interesting antibacterial activity, with a Minimum Inhibitory Concentration (MIC) of 62.50 µg/mL against these two latter strains. The findings showed that the studied oils have antibacterial activity, and thus great potential for their application in food preservation and natural health products. Leibniz Research Centre for Working Environment and Human Factors 2014-05-13 /pmc/articles/PMC4463966/ /pubmed/26417280 Text en Copyright © 2014 Rouis-Soussi et al. http://www.excli.de/documents/assignment_of_rights.pdf This is an Open Access article distributed under the following Assignment of Rights http://www.excli.de/documents/assignment_of_rights.pdf. You are free to copy, distribute and transmit the work, provided the original author and source are credited.
spellingShingle Original Article
Rouis-Soussi, Lamia Sakka
Ayeb-Zakhama, Asma El
Mahjoub, Aouni
Flamini, Guido
Jannet, Hichem Ben
Harzallah-Skhiri, Fethia
Chemical composition and antibacterial activity of essential oils from the Tunisian Allium nigrum L.
title Chemical composition and antibacterial activity of essential oils from the Tunisian Allium nigrum L.
title_full Chemical composition and antibacterial activity of essential oils from the Tunisian Allium nigrum L.
title_fullStr Chemical composition and antibacterial activity of essential oils from the Tunisian Allium nigrum L.
title_full_unstemmed Chemical composition and antibacterial activity of essential oils from the Tunisian Allium nigrum L.
title_short Chemical composition and antibacterial activity of essential oils from the Tunisian Allium nigrum L.
title_sort chemical composition and antibacterial activity of essential oils from the tunisian allium nigrum l.
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4463966/
https://www.ncbi.nlm.nih.gov/pubmed/26417280
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