Effet du séchage de la matière végétale sur la composition chimique de l’huile essentielle et l’activité antioxydante d’extraits de &lt;i&gt;Ocimum basilicum&lt;/i&gt; L.

Dabiré, Christophe; Nebie, Rhc; Bélanger, André; Nacro, Mouhoussine; Sib, FS

doi:10.4314/ijbcs.v5i3.72218

Cited by 13 publications

(13 citation statements)

References 20 publications

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“…L'huile essentielle est constituée majoritairement de pipéritone, (+)-2-carène, limonène, élémol, etc (Yagi et al, 2016;Kpoviessi et al, 2014 ;Alitonou et al, 2012 ;Nonviho et al, 2010 ;Khadri et al, 2008). Selon la littérature, la composition chimique et les activités biologiques de cette huile varient selon le profil phénologique (Kpadonou- Kpoviessi et al, 2012 ;Dabire et al, 2011).…”

Section: Cymbopogon Citratus (Dc) Stapf Etunclassified

“…Ces auteurs ont travaillé sur le matériel séché. La différence observée au niveau des rendements pourrait s'expliquer, d'une part, par l'influence de l'état (frais ou sec) du matériel utilisé (Kpadonou- Kpoviessi et al, 2012 ;Dabire et al, 2011 ;Barbosa et al, 2008) et, d'autre part, par la différence du lieu de récolte (Onadja et al, 2007). Les résultats de l'analyse chimique par CPG/DIF et CPG/SM sont conformes à ceux publiés précédemment par Kpoviessi et al (2014) et Nonviho et al (2010).…”

Section: Rendement Et Composition Chimiqueunclassified

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Relations entre composition chimique, activité antioxydante et toxicité des huiles essentielles de deux espèces de <i>Cymbopogon</i> acclimatées au Bénin

Kpadonou¹,

Allanto²,

Kpadonou-Kpoviessi³

et al. 2019

Int. J. Bio. Chem. Sci

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Les plantes aromatiques jouent un rôle considérable dans plusieurs secteurs notamment dans la médicine traditionnelle. Dans le but de la valorisation de ces plantes, ce travail a pour objectif d'évaluer la relation composition chimique-activité antioxydante, et la toxicité des huiles essentielles de Cymbopogon citratus et Cymbopogon schoenantus acclimatées au Bénin. Les huiles essentielles (HE) ont été obtenues et analysées par CPG/DIF et CPG/SM. Le test antioxydant a été réalisé par la méthode de DPPH et celui de la toxicité sur les larves de crevette de Artémia salina Leach. L'analyse chimique a révélé plusieurs composés dont le citral à 75% dans l'HE de Cymbopogon citratus et la pipéritone à 60,3% dans celle de Cymbopogon schoenantus. L'activité antioxydante varie d'une plante à une autre avec l'huile de Cymbopogon schoenantus (CE50 = 5040 µg/mL) plus antioxydante que celle de Cymbopogon citratus (CE50 = 47860 µg/mL). Cette activité de l'huile de Cymbopogon schoenantus pourrait s'expliquer par la présence de constituants comme la pipéritone et le limonène, reconnus pour leurs propriétés antioxydantes. Toutes les huiles étudiées sont moins antioxydantes que le composé de référence (acide ascorbique; CE50 = 20 µg/mL), et moins toxiques (CL50 ˃30 µg/mL) que la camptothécine (CL50 = 13,27 µg/mL). Ces huiles essentielles, moins toxiques et déjà utilisées dans la médicine traditionnelle, pourraient également contribuer à la prise en charge des maladies dues aux radicaux libres.

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Section: Cymbopogon Citratus (Dc) Stapf Etunclassified

Section: Rendement Et Composition Chimiqueunclassified

Relations entre composition chimique, activité antioxydante et toxicité des huiles essentielles de deux espèces de <i>Cymbopogon</i> acclimatées au Bénin

Kpadonou¹,

Allanto²,

Kpadonou-Kpoviessi³

et al. 2019

Int. J. Bio. Chem. Sci

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“…The measurement of the anti-radical activity of the plant extracts was carried out by the 2,2'-diphenyl-1-picrylhydrazyl test (DPPH) according to the method described by Dabire et al (2011) 13 with some modifications. A calibration curve was first established using quercetin as a reference substance.…”

Section: Dpph Test (22'-diphenyl-1-picrylhydrasyl)mentioning

confidence: 99%

Phytochemical Study and Biological Activities of Hydro-Alcoholic Extract of the Leaves of Bridelia ferruginea Benth and its Fractions

Bakoma¹,

Sanvee²,

Metowogo³

et al. 2019

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Context and purpose: The roots of B. ferruginea are used in traditional Togo medicine in the treatment of diabetes. Studies have shown that leaves have a low antihyperglycemic effect.This study aims to improve the effect of leaves. Methods: The hydroalcoholic extract of the leaves underwent a fractionation (separation in cold alcohol) and an OGTT (Oral Glucose tolerance test) on healthy mice, a phytochemical screening and antioxidant tests (in vitro: DPPH and ex vivo: AAPH) were performed on the extract and its fractions. Results: Phytochemical screening of the extract showed the presence of phenols, flavonoids and condensed tannins as well as the absence of condensed tannins, alkaloids, saponosides and anthracene derivatives. The extract also showed antioxidant activity. The supernatant fraction showed antihyperglycemic activity at 100 mg / kg in the 30 th and 60 th after glucose administration. Phytochemical screening of the supernatant revealed the presence of phenols, flavonoids and condensed tannins. The supernatant also showed more pronounced antioxidant activity than the total extract. Conclusion: In view of these results, the most active fraction obtained by the separation technique in cold alcohol is the supernatant. ABSTRACT SUMMARY• These results confirm those of previous authors who showed that the total leaf extract did not have antihyperglycemic activity. By contrast, one of the fractions of the total extract obtained by separation technique in cold alcohol, the supernatant, administered at a dose of 100 mg/kg of body weight showed a significant antihyperglycemic effect on OGTT. Phytochemical screening of the supernatant revealed the presence of phenols, flavonoids and condensed tannins. The supernatant also showed more pronounced antioxidant activity than the total extract.

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“…The method, inspired by the works of Molyneux (13) and Constantin et al (14), is based on the reduction of the violet DPPH • radical by an H atom donor (AH) leading to the formation of the colorless 2,2-diphenyl-1-picrylhydrazine (DPPH-H) and the radical (A • ) according to the following equation: DPPH • + AH ⟶ DPPH-H + A • One hundred microliters (100 µL) of each extract or standard methanolic solutions was mixed and vortexed with a 2 mL methanolic solution of DPPH (10 -4 M). Only methanol was used as extract solution in the control sample.…”

Section: Determination Of Dpph Radical-scavenging Activitymentioning

confidence: 99%

Chemical composition and antioxidant activities of different parts of Ficus sur

Boyode¹,

Simalou²,

Eloh³

et al. 2018

J Herbmed Pharmacol

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Well established as source of bioactive compounds, medicinal plants have long been used in treatment of human ailments. The validation of traditional use of medicinal plants can be achieved by screening a collection of extracts for bioactivity using in vitro, in cellulo and even in vivo assays. The results of this work are consistent with the traditional use of the various parts of Ficus sur to cure hepatic pain, cardiovascular and neurodegenerative diseases, cancer, and diabetes. Although the bark extract is more active than the extracts of the other organs, it would be better to use the leaves to preserve the plant, as these contain all the metabolites present in the bark and much more. Please cite this paper as:Saloufou KI, Boyode P, Simalou O, Eloh K, Idoh K, Melila M, et al. Chemical composition and antioxidant activities of different parts of Ficus sur.Introduction: Ficus sur is a plant widely used in traditional pharmacopoeia in Togo. So, this study aimed the assessment of antioxidant properties and identification of some compounds from the ethanolic extracts of different parts of the plant (leaves, fruits, roots, and barks). Methods: The phenolic and flavonoid contents of the ethanolic extracts of different organs of Ficus sur were assessed using conventional known methods. The DPPH radical scavenging and the ferric-reducing antioxidant power (FRAP) assays were used to highlight the antioxidant activities. The different extract samples were also analysed by liquid chromatography coupled to a quadrupole-time of flight mass detector (ESI-QTOF). Results: Total phenolic contents (TPCs) for 1 mg of dry extract ranged from 489.40 ± 7.48 μg GAE (gallic acid equivalents) for the bark to 62.34 ± 2.66 μg GAE for unripe fruits. The bark exhibited the highest flavonoid content, which was closed to 90.20 ± 3.72 μg QE (quercetin equivalents)/mg of dry extract. The radical scavenging activities of the bark and unripe fruits were 56.50 ± 0.29 and 7.3 ± 0.30 μg QE/mg of dry extract, respectively. In the same order, the FRAP values of the two organs were 104.57 ± 4.75 and 19.61 ± 0.22 μmol FeSO 4 Eq/mg of dry extract. Many compounds including notoginsenoside R10; 4' ,5,7-trihydroxyflavan-3-ol; catechin; and boviquinone 4 were identified. Conclusion: The various organs of Ficus sur are a source of bioactive compounds especially phenolic compounds and flavonoids with antioxidant activity.

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Effet du séchage de la matière végétale sur la composition chimique de l’huile essentielle et l’activité antioxydante d’extraits de <i>Ocimum basilicum</i> L.

Cited by 13 publications

References 20 publications

Relations entre composition chimique, activité antioxydante et toxicité des huiles essentielles de deux espèces de <i>Cymbopogon</i> acclimatées au Bénin

Relations entre composition chimique, activité antioxydante et toxicité des huiles essentielles de deux espèces de <i>Cymbopogon</i> acclimatées au Bénin

Phytochemical Study and Biological Activities of Hydro-Alcoholic Extract of the Leaves of Bridelia ferruginea Benth and its Fractions

Chemical composition and antioxidant activities of different parts of Ficus sur

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