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Composition and Chemical Variability of Ivoirian Polyalthia oliveri Leaf Oil
Author(s) -
Ouattara Zana A.,
Boti Jean Brice,
Ahibo Coffy Antoine,
Bekro YvesAlain,
Casanova Joseph,
Tomi Félix,
Bighelli Ange
Publication year - 2016
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.201500066
Subject(s) - germacrene d , chemistry , chemical composition , humulene , germacrene , chromatography , composition (language) , essential oil , analytical chemistry (journal) , organic chemistry , linguistics , philosophy
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 13 C‐ 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.