Chemodiversity and antimicrobial activities of Eucalyptus spp. essential oils

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dc.creatorAmmar, Hajer
dc.creatorM’Rabe, Yassine
dc.creatorHassan, Sawsan
dc.creatorChahine, Mireille
dc.creatorde Haro Marti, Mario
dc.creatorSoufan, Walid
dc.creatorAndres, Sonia
dc.creatorLópez Puente, Secundino
dc.creatorHosni, Karim
dc.date2024-08-06
dc.date2025-02-12T21:21:26Z
dc.date2025-02-12T21:21:26Z
dc.date.accessioned2026-06-27T14:23:30Z
dc.descriptionThe essential oils extracted from the leaves of five Eucalyptus species: E. astringens, E. camaldulensis, E. lehmannii, E. leucoxylon, and E. sideroxylon, were investigated for their antimicrobial properties. These species were growing in the same plantation area, exposed to identical conditions, and subjected to uniform agronomic practices. Processed and analyzed under consistent parameters, the essential oil yields ranged from 0.14 to 0.96% (w/w). Chromatographic analysis were resolved into 48 compounds, with 11 common to all oils. Terpenoids (oxygenated mono- and sesquiterpenes) dominated the oil profiles, constituting 55.66–76.67% of the composition. Major components identified included 1,8-cineole (21.97–50.93%), α-pinene (2.18–15.95%), p-cymene (0.83–15.94%), spathulenol (0–20.49%), globulol (4.09–14.26%), and aromadendrene (2.37–15.03%). Genetically driven interspecific variation in composition was observed through Principal Component Analysis (PCA), Hierarchical Cluster Analysis (HCA), and heatmap clustering. Moreover, distinctive components were identified for each essential oil, offering a valuable tool for discriminating between Eucalyptus species and ensuring authentication and quality control in commercial samples. Results from antimicrobial disc-diffusion assays indicated robust antimicrobial activity in all essential oils, with those derived from E. camaldulensis, E. lehmannii, and E. leucoxylon exhibiting the highest effectiveness.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/172999
dc.identifier.urihttp://hdl.handle.net/123456789/78316
dc.languageen
dc.publisherCogent OA
dc.rightsOpen Access
dc.sourceAmmar, H. M’Rabet, Y. Hassan, S. Chahine, M. de Haro-Marti, M. Soufan, W. Andres, S. López, S. and Hosni, K. 2024. Chemodiversity and antimicrobial activities of Eucalyptus spp. essential oils. Cogent Food & Agriculture, 10(1), p. 2383318.
dc.subjectantimicrobials
dc.subjectterpenes
dc.subjecteucalyptus spp.
dc.subjectchemical polymorphism
dc.subjectdistinctive chemical markers
dc.titleChemodiversity and antimicrobial activities of Eucalyptus spp. essential oils
dc.typeJournal Article

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Centro Internacional para la Investigación Agrícola en las Áreas Secas (ICARDA)