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Chemical Variability of Ivoirian Xylopia rubescens Leaf Oil
Author(s) -
Yapi Thierry Acafou,
Boti Jean Brice,
Tonzibo Zanahi Félix,
Ahibo Coffy Antoine,
Bighelli Ange,
Casanova Joseph,
Tomi Félix
Publication year - 2017
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.201600200
Subject(s) - chemistry , chemical composition , composition (language) , chromatography , botany , analytical chemistry (journal) , horticulture , organic chemistry , biology , philosophy , linguistics
Forty‐two essential oil samples were isolated from leaves of Xylopia rubescens harvested in three forests of Southern Ivory Coast. All the samples have been submitted to GC‐FID and the retention indices ( RI s) of individual components have been measured on two capillary columns of different polarity. In addition, 20 oil samples, selected on the basis of their chromatographic profile, were also analyzed by 13 C‐NMR and 24 components (78.0 – 92.4% of the whole compositions) have been identified. The content of the main components varied drastically from sample to sample: furanoguaia‐1,4‐diene (5.7 – 54.1%), furanoguaia‐1,3‐diene (1.1 – 10.5%), (8 Z ,11 Z ,14 Z )‐heptadeca‐8,11,14‐trien‐2‐one (4.3 – 16.0%), and ( E )‐ β ‐caryophyllene (1.7 – 17.3%). Hierarchical cluster and principal components analysis of the 42 oil compositions allowed the distinction of two well‐differentiated groups of unequal importance within the oil samples. Oil samples of the main group ( Group II ) contained mainly furanoguaia‐1,4‐diene (mean [M] = 43.1%; standard deviation [SD] = 3.2%) while furanoguaia‐1,3‐diene (M = 8.4%; SD = 0.9%) and (8 Z ,11 Z ,14 Z )‐heptadeca‐8,11,14‐trien‐2‐one (M = 7.1%; SD = 1.5%) were present at appreciable contents. The composition of Group I was dominated by furanoguaia‐1,4‐diene (M = 17.0%; SD = 8.5%), (8 Z ,11 Z ,14 Z )‐heptadeca‐8,11,14‐trien‐2‐one (M = 10.2%; SD = 2.4%) and ( E )‐ β ‐caryophyllene (M = 9.5%; SD = 5.3%).