Composition and Chemical Variability of Ivoirian Polyalthia oliveri Leaf Oil |
| |
Authors: | Zana A. Ouattara Jean Brice Boti Coffy Antoine Ahibo Yves‐Alain Bekro Joseph Casanova Félix Tomi Ange Bighelli |
| |
Affiliation: | 1. Université de Corse‐CNRS, UMR 6134 SPE, Equipe Chimie et Biomasse, Route des Sanguinaires, Ajaccio, France;2. Laboratoire de Chimie Organique Biologique, UFR‐SSMT, Université Félix Houphou?t‐Boigny, Abidjan, C?te d'Ivoire;3. Laboratoire de Chimie Bio‐Organique et des Substances Naturelles, UFR SFA, Université Nangui Abrogoua, C?te d'Ivoire |
| |
Abstract: | The chemical composition of 45 essential oil samples isolated from the leaves of Polyalthia oliveri harvested in three Ivoirian forests was investigated by GC‐FID (retention indices measured on two columns of different polarities), and by 13C‐NMR, following a method developed in our laboratory. In total, 41 components were identified. The content of the main components varied drastically from sample to sample: (E)‐β‐caryophyllene (1.2 – 50.8%), α‐humulene (0.6 – 47.7%), isoguaiene (0 – 27.9%), alloaromadendrene (0 – 24.7%), germacrene B (0 – 18.3%), δ‐cadinene (0.4 – 19.3%), and β‐selinene (0.2 – 18.5%). The analysis of six oil samples selected in function of their chromatographic profiles is reported in detail. The 45 oil compositions were submitted to hierarchical cluster and principal components analysis, which allowed the distinction of three groups within the oil samples. The compositions of the oils from group I (15 samples) and II (12 samples) were dominated by (E)‐β‐caryophyllene and α‐humulene, respectively. Oil samples of group III (18 samples) needed to be partitioned into four subgroups III.1–III.4 whose compositions were dominated by alloaromadenrene, isoguaiene, germacrene B, and δ‐cadinene, respectively. |
| |
Keywords: |
Polyalthia oliveri
Statistical analysis Essential oils (E)‐β ‐Caryophyllene α ‐Humulene Alloaromadenrene Isoguaiene |
|
|