title: Chemical variability of Xylopia quintasii Engl. & Diels leaf oil from Côte d'Ivoire.
abstract: The chemical composition of 42 essential-oil samples isolated from the leaves of Xylopia quintasii harvested in three Ivoirian forests was investigated by GC-FID, including the determination of retention indices (RIs), and by (13) C-NMR analyses. In total, 36 components accounting for 91.9-92.6% of the oil composition were identified. The content of the main components varied drastically from sample to sample: (E)-β-caryophyllene (0.9-56.9%), (Z)-β-ocimene (0.3-54.6%), β-pinene (0.8-27.9%), α-pinene (0.1-22.8%), and furanoguaia-1,4-diene (0.0-17.6%). The 42 oil compositions were submitted to hierarchical cluster and principal components analysis, which allowed the distinction of three groups within the oil samples. The composition of the oils of the major group (22 samples) was dominated by (E)-β-caryophyllene. The oils of the second group (12 samples) contained β-pinene and α-pinene as the principal compounds, while the oils of the third group (8 samples) were dominated by (Z)-β-ocimene, germacrene D, (E)-β-ocimene, and furanoguaia-1,4-diene. The oil samples of Group I and II came from clay-soil forests, while the oil samples belonging to Group III were isolated from leaves harvested in a sandy-soil forest.
authors.affiliation: Université de Corse-CNRS, UMR 6134 SPE, Equipe Chimie et Biomasse, Route des Sanguinaires, F-20000 Ajaccio (phone: +33-4-95524122; fax: +33-4-95524142); Laboratoire de Chimie Organique Biologique, UFR-SSMT, Université Félix Houphouët-Boigny, BPV 34 Abidjan, Côte d'Ivoire.
authors.forename: Thierry Acafou
authors.initials: TA
authors.lastname: Yapi
authors.forename: Jean Brice
authors.initials: JB
authors.lastname: Boti
authors.forename: Zanahi Félix
authors.initials: ZF
authors.lastname: Tonzibo
authors.forename: Coffy Antoine
authors.initials: CA
authors.lastname: Ahibo
authors.forename: Ange
authors.initials: A
authors.lastname: Bighelli
authors.forename: Joseph
authors.initials: J
authors.lastname: Casanova
authors.forename: Félix
authors.initials: F
authors.lastname: Tomi
mesh_terms: D007560:Cote d'Ivoire; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry*; D054336:Xylopia / Q000737:chemistry*
chemical_list: D009822:Oils, Volatile
keywords: Essential oils; Hierarchical cluster analysis (HCA); Principal component analysis (PCA); Xylopia quintasii