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

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dc.contributor.authorRouis-Soussi, Lamia Sakka
dc.contributor.authorAyeb-Zakhama, El Asma
dc.contributor.authorMahjoub, Aouni
dc.contributor.authorFlamini, Guido
dc.contributor.authorJannet, Hichem Ben
dc.contributor.authorHarzallah-Skhiri, Fethia
dc.date.accessioned2014-07-24T10:31:08Z
dc.date.available2014-07-24T10:31:08Z
dc.date.issued2014-05-13
dc.description.abstractThe 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.en
dc.identifier.issn1611-2156
dc.identifier.urihttp://hdl.handle.net/2003/33535
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-170
dc.language.isoen
dc.relation.ispartofseriesEXCLI Journal ; Vol. 13, 2014en
dc.subjectAllium nigrum L.en
dc.subjectessential oilsen
dc.subjectorgansen
dc.subjectGC–MS analysisen
dc.subjectantibacterial activityen
dc.subject.ddc610
dc.titleChemical composition and antibacterial activity of essential oils from the Tunisian Allium nigrum L.en
dc.typeText
dc.type.publicationtypearticle
dcterms.accessRightsopen access
eldorado.dnb.zdberstkatid2132560-1

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