Seasonal effect on the chemical composition, insecticidal properties and other biological activities of Zanthoxylum leprieurii Guill. & Perr. essential oils
[en] This study focused, for the first time, on the evaluation of the seasonal effect on the
chemical composition and biological activities of essential oils hydrodistillated from leaves, trunk
bark and fruits of Zanthoxylum leprieurii (Z. leprieurii), a traditional medicinal wild plant growing in
Côte d’Ivoire. The essential oils were obtained by hydrodistillation from fresh organs of Z. leprieurii
growing on the same site over several months using a Clevenger‐type apparatus and analyzed by
gas chromatography‐mass spectrometry (GC/MS). Leaf essential oils were dominated by tridecan‐
2‐one (9.00 ± 0.02–36.80 ± 0.06%), (E)‐β‐ocimene (1.30 ± 0.50–23.57 ± 0.47%), β‐caryophyllene (7.00 ±
1.02–19.85 ± 0.48%), dendrolasin (1.79 ± 0.08–16.40 ± 0.85%) and undecan‐2‐one (1.20 ± 0.03–8.51 ±
0.35%). Fruit essential oils were rich in β‐myrcene (16.40 ± 0.91–48.27 ± 0.26%), citronellol (1.90 ±
0.02–28.24 ± 0.10%) and geranial (5.30 ± 0.53–12.50 ± 0.47%). Tridecan‐2‐one (45.26 ± 0.96–78.80 ±
0.55%), β‐caryophyllene (1.80 ± 0.23–13.20 ± 0.33%), 𝛼‐humulene (4.30 ±1.09–12.73 ± 1.41%) and
tridecan‐2‐ol (2.23 ± 0.17–10.10 ± 0.61%) were identified as major components of trunk bark oils.
Statistical analyses of essential oil compositions showed that the variability mainly comes from the
organs. Indeed, principal component analysis (PCA) and hierarchical cluster analysis (HCA)
allowed us to cluster the samples into three groups, each one consisting of one different Z. leprieurii
organ, showing that essential oils hydrodistillated from the different organs do not display the same
chemical composition. However, significant differences in essential oil compositions for the same
organ were highlighted during the studied period, showing the impact of the seasonal effect on
essential oil compositions. Biological activities of the produced essential oils were also investigated.
Essential oils exhibited high insecticidal activities against Sitophilus granarius, as well as antioxidant,
anti‐inflammatory and moderate anti‐plasmodial properties.
Disciplines :
Chemistry Entomology & pest control Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Tanoh, Amenan Evelyne ; Université de Liège - ULiège > Département GxABT > Chimie des agro-biosystèmes
Blanchard Boué, Guy
Nea, Fatimata ; Université de Liège - ULiège > Département GxABT > Chimie des agro-biosystèmes
Genva, Manon ; Université de Liège - ULiège > Département GxABT > Chimie des agro-biosystèmes
Wognin, Esse Léon
Ledoux, Allison ; Université de Liège - ULiège > Département de pharmacie > Pharmacognosie
Martin, Henri ; Université de Liège - ULiège > Département GxABT > Chimie des agro-biosystèmes
Tonzibo, Zahani Félix
Frederich, Michel ; Université de Liège - ULiège > Département de pharmacie > Pharmacognosie
Fauconnier, Marie-Laure ; Université de Liège - ULiège > Département GxABT > Chimie des agro-biosystèmes
Language :
English
Title :
Seasonal effect on the chemical composition, insecticidal properties and other biological activities of Zanthoxylum leprieurii Guill. & Perr. essential oils
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