Résumé
La composition chimique des huiles essentielles d’aiguilles et de cônes de Biota orientalis L. extraites par hydrodistillation a été analysée par chromatographie gazeuse associée à une détection à ionisation de flamme (CG-DIF) et par chromatographie gazeuse couplée à la spectrométrie de masse (CG-SM). Vingt et un composés ont été identifiés chez l’huile essentielle de Biota orientalis, qui s’est avérée particulièrement riche en monoterpènes hydrocarbonés. Des différences quantitatives principalement ont été observées entre les aiguilles et les cônes, quoiqu’ils affichent le même chémotype. Pour les deux huiles, α-pinène (67 et 47 % respectivement chez les cônes et les aiguilles), β-phellandrène (5,1 et 10,9 %) et α-cédrol (4,6 et 7,5 %) constituent les composés majeurs identifiés. L’étude de leur activité antifongique vis-à-vis d’une dizaine de champignons phytopathogènes a révélé des propriétés intéressantes qui pourraient être valorisées en tant que biofongicide.
Abstract
The chemical composition of essential oils isolated by hydrodistillation from needles and cones of Biota orientalis L. was analyzed by gas chromatography-flame ionization detection (GC-FID) and gas chromatography-mass spectrometry (GC-MS). Twenty one compounds were identified in Biota orientalis essential oil which appeared to be rich in monoterpene hydrocarbons. Quantitative differences mainly, between cone and needle oils, were observed, although they displayed the same chemotype. For both oils, α-pinene (67 and 47% respectively in cones and needles), β-phellandrene (5.1 and 10.9%) and α-cedrol (4.6 and 7.5%) were the major constituents. The study of their antifungal activity towards ten plants pathogenic fungi revealed interesting properties that could be applied as biofungicide.
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Amri, I., Hamrouni, L., Hanana, M. et al. Propriétés antifongiques des huiles essentielles de Biota orientalis L.. Phytothérapie 12, 170–174 (2014). https://doi.org/10.1007/s10298-013-0816-4
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DOI: https://doi.org/10.1007/s10298-013-0816-4