Publications by authors named "Zanahi Felix Tonzibo"
Moldenke is a plant widely used to treat diseases, such as rheumatism, diabetes, and malaria in traditional medicine. To better understand the traditional uses of this plant, a phytochemical study was undertaken, revealing a higher proportion of polyphenols, including flavonoids in leaf extract and moderate proportion in stem and root extracts. The antioxidant activity of the extracts was also determined using three different assays: the radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity, the FRAP method (Ferric-reducing antioxidant power) and the β-carotene bleaching test.
View Article and Find Full Text PDFThis work aims to study the variations in the composition of leaf, flower, and stem essential oils over two years. organs were harvested in Bregbo (East Côte d'Ivoire) each month from June 2015 to June 2017. The essential oils were obtained by hydrodistillation and characterized by GC-MS and C NMR.
View Article and Find Full Text PDFThis 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 (), a traditional medicinal wild plant growing in Côte d'Ivoire. The essential oils were obtained by hydrodistillation from fresh organs of 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.
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- The study is the first to analyze the leaf essential oil of Enantia polycarpa using various chromatographic and spectroscopic techniques, focusing on 52 oil samples.
- Four main groups of essential oil compositions were identified, with β-elemene and germacrene B being the most common in one group, while germacrene D and β-cubebene were prominent in others.
- The research particularly emphasized the quantification of thermolabile components and included C-NMR data for β-cubebene, enhancing understanding of the essential oil's chemical makeup.
The compositions of essential oil obtained from leaves, flowers and fruits of Lantana camara L. growing in wild at Cte d'Ivoire, were investigated by GC and ¹³C NMR. Thirty-seven compounds accounting for 88.
View Article and Find Full Text PDFForty-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 (RIs) 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 C-NMR and 24 components (78.
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- The study analyzed 42 essential-oil samples from Xylopia quintasii leaves collected in three Ivoirian forests using GC-FID and (13)C-NMR techniques.
- A total of 36 chemical components were identified, making up 91.9-92.6% of the oil, with significant variation in key compounds like (E)-β-caryophyllene and (Z)-β-ocimene across samples.
- Hierarchical clustering and principal component analysis revealed three distinct groups of oil samples based on their chemical composition and soil type, with Group I and II linked to clay-soil forests, while Group III was associated with sandy-soil forests.