Etude comparative des activités antioxydantes d’extraits éthanoliques de feuilles, d’écorces et de racines de &lt;i&gt;Cassia sieberiana&lt;/i&gt;

Evenamede, Kodjo Selom; Kpegba, Kafui; Simalou, Oudjaniyobi; Boyode, Pakoupati; Agbonon, Amégnona; Gbéassor, Messanvi

doi:10.4314/ijbcs.v11i6.29

Cited by 10 publications

(11 citation statements)

References 21 publications

(23 reference statements)

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“…In fact, flavonoids protect plant tissues against the harmful effects of solar radiation [ 53 ]. The presence of flavonoids in the four organs of the plant could suggest that the plant has anti-inflammatory properties, and could thus play a positive role in the treatment of cardiovascular and neurodegenerative diseases, also perhaps having antitumor properties [ 54 ]. On the other hand, following our results, ethanolic solvents would be able to extract the highest amounts of total flavonoids from Passiflora , Physalis and Solanum .…”

Section: Discussionmentioning

confidence: 99%

“…The high levels of TAA in some plant parts and the low levels in other parts are related to their chemical compositions, functional groups of major compounds, and polyphenol content [ 54 , 64 , 65 ]. In fact, in Physalis the total polyphenol content in the leaves is twice as much as that in the flowers when applying most of the solvents studied in this research, especially with the decoction method.…”

Section: Discussionmentioning

confidence: 99%

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Extraction Processes with Several Solvents on Total Bioactive Compounds in Different Organs of Three Medicinal Plants

et al. 2020

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The extraction of secondary metabolites by water, MeOH:water (8:2) containing NaF, methanol, ethanol and acetone (all of them diluted (7:3) in water)from the different parts (leaves, flowers, stems and roots) of Passiflora caerulea L., Physalis peruviana L. and Solanum muricatum Aiton via decoction and maceration methods was studied. The highest extraction yields were recorded by methanol for decoction and acetone for maceration. The total polyphenol content (TPC) obtained by decoction had the highest TPC contents, and MeOH containing NaF was the best solvent for the extraction of TPC. Maceration was suitable for flavonoid extractions, with ethanol and acetone being the best solvents. In general, the highest levels of TPC and flavonoids were obtained from Passiflora leaves regardless of the solvent or extraction method applied. Furthermore, the roots of Physalis and Solanum showed important levels of these compounds in consonance with the total antioxidant activity (TAA) evaluated in the different organs of the plant in the three species. In this study, the solvents and extraction methods applied were tools that determined significantly the level of extraction of bioactive compounds, showing a different impact on plant organs for each medicinal species studied.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Extraction Processes with Several Solvents on Total Bioactive Compounds in Different Organs of Three Medicinal Plants

et al. 2020

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“…This activity could be due to the presence of polyphenols compounds found in D. benthamianus extracts. Moreover, the work of Evenamede et al (2017) highlighted a correlation between total phenol content and antiradical activity.…”

Section: Discussionmentioning

confidence: 96%

Assessment of Radical Scavenging and Sickling Inhibitory Activities of the Bark of Disthemonanthus Benthamianus (Caesalpiniaceae)

Joël

Marcel

Mireille

et al. 2021

ESJ

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Among the medicinal plants used in the treatment of sickle cell disease in south-east of Côte d'Ivoire is Disthemonanthus benthamianus. This paper focuses on assessing its antioxidant properties and its antisickling activity. The test of inhibition of sodium metabisulfite-induced sickling of the erythrocytes was carried out based on this evaluation. The total phenolic compounds contents were 45 ± 0.64 and 39.84 ± 0.69 mg/g of dry weight for ethanolic extract and the decocted respectively. The DPPH reduction test showed that the decocted (9 μg/mL) had a lower IC50 than the ethanolic extract (16 μg/mL). There was no significant difference between the sickling inhibitory activities of the ethanolic extract (87.00%) and the decocted (81.66%). This study showed that both extracts had sickling inhibitory and antioxidant activities.

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“…34 On the other hand, the extract is 6 times less rich in phenols than the hydroethanol extract from Cassia sieberiana barks, Caesalpiniaceae with 345.04±3.16 versus 51.19 ± 0.79 AGE/g extract respectively. 35 Total phenol content of a sample is often correlated with its total antioxidant capacity. 36 However, the Folin-Ciacolteu reagent is not specific to phenolic compounds.…”

Section: Discussionmentioning

confidence: 99%

Condensed Tannins Content and their Influence on the Antioxidant Activity of Bark Hydroethanol Extract of Piliostigma reticulatum (Dc) Hochst and its Fractions

Dieng¹,

Mathieu²,

Sarr³

et al. 2020

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Piliostigma reticulatum (DC) Hochst (Caesalpiniaceae ; Synonym: Bauhinia reticulata) is a plant that grows in the Sahel-Sudan area, from Senegal to Sudan. It is a plant well known to traditional practitioners in Senegal. In Africa, among its organs, leaves and bark are the most used. These are often used against many diseases, such as ulcers 15 , boils, sores, syphilitic cancer, toothache, gingivitis and diarrhea. 16,17 The leaves are used for their ABSTRACT Background: Consumption of natural products from plants is implicated in the reduction of the occurrence of diseases related to oxidative stress. Piliostigma reticulatum is a plant well known to traditional practitioners in Senegal where leaves and bark are often used against many diseases, such as ulcers, boils, syphilitic cancer, toothache, gingivitis and diarrhea. Aim: This study compared hydroethanol extract from the plant bark and its fractions by assessing their total phenol contents, antioxidant activity and the influence of condensed tannins on their activity. Method: barks were extracted by a moderate decoction with ethanol-water followed by a silica column fractionation with successively ethyl acetate, methanol and water. For this study, assays were carried out before and after precipitation of tannins by BSA and PVPP tests. Total phenol and condensed tannins of hydroethanolic extract and its fractions were performed by Folin Ciocalteu and hydrolysis methods. Antioxidant activity was evaluated by DPPH and CUPRAC tests. Results: Tannins precipitation leads a light decrease of total phenol and condensed tannins contents of samples. Total phenol content of hydroethanolic extract was 51.2 mg GAE/g vs 3.2 after BSA test and 1.7 after PVPP test whereas condensed tannins content obtained 72.2% vs 4.2% and 2.3% after precipitation. Antiradical activity was lost following the elimination of tannins with IC 50 : 5.33 ± 0.04 mg/l vs 78.86 ± 0.92 after BSA and > 500 after PVPP. Conclusion: This results showed the condensed tannins would be in charge of antiradical and reducing activities of plant barks and PVPP precipitated much better the tannins from those extracts than BSA.

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Etude comparative des activités antioxydantes d’extraits éthanoliques de feuilles, d’écorces et de racines de <i>Cassia sieberiana</i>

Cited by 10 publications

References 21 publications

Extraction Processes with Several Solvents on Total Bioactive Compounds in Different Organs of Three Medicinal Plants

Extraction Processes with Several Solvents on Total Bioactive Compounds in Different Organs of Three Medicinal Plants

Assessment of Radical Scavenging and Sickling Inhibitory Activities of the Bark of Disthemonanthus Benthamianus (Caesalpiniaceae)

Condensed Tannins Content and their Influence on the Antioxidant Activity of Bark Hydroethanol Extract of Piliostigma reticulatum (Dc) Hochst and its Fractions

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