Evaluation of Potential Extracts Antioxydant (Aqueous, Hydro-Ethanolic and Ethanolic) of an Aquatic Plant from the River Djoue (<i>Ledermanniella schlechteri</i>)

Abstract

The aim for this present study was to evaluate the antioxidant potential of aqueous extracts (AE), hydro-ethanolic extracts (HE) and ethanolic extracts (EE) obtained from an aquatic plant (L. schlechteri) using a simple and fast method that is the CCM. This method revealed the presence of phenolics and flavonoids at different levels but with higher antioxidant activity in EE compared to AE. Among the two families of antioxidants evaluated, the phenolic compounds were found to be higher on the EE (5.85 mgEAG/MS) followed by the HE (5.06 mgEAG/MS) and less and less important on the AE (3.661 mgEAG/MS). While the less significantly elevated flavonoids showed values of 1.146 mgECa/MS for EE, 0.406 mgECa/MS for HE et 0.181 mgECa/MS for AE. However, the anti-free radical activity was also evaluated. Unlike the antioxidant activity, the ant-free radical activity with a greater IC50 was observed on AE with a rate of 66.66 mg/mL, then less on the hydro-ethanolic and ethanolic extracts, respectively at levels of 26.15 mg/mL et 19.18 mg/mL.

Evaluation of Some Secondary Metabolites and Determination of the Antioxidant Potential of Different Extracts from the Plant of <i>Pteridium aquilinum</i>

“…On the other hand, the IC50 value found with the hydroalcoholic extract (3.61 mg/mL) is significantly lower (P < 0.05). These results are in agreement with those found by [30], where they stated that both extracts had high inhibitory power on P. aquilinum plant.…”

“…The literature reports that, it is in the alcoholic extracts that we find more phenolic compounds [30] [31] while for our case, it is in the hydroethanol and aqueous extracts that we found more phenolic compounds. The high level of these compounds in the hydroethanolic and aqueous extracts leads us to deduce that water and the water/plus alcohol mixture are solvents for better extraction of these compounds.…”

Characterisation of Congolese Aquatic Biomass and Their Potential as a Source of Bioenergy

“…This green aquatic plant grows abundantly in the falls of the river Djoué, one of the tributaries of the Congo River. This aquatic plant is commonly called Michiélé [21] and is currently used by a minority of the population as a food in the Southwest population of Brazzaville. It is rich in nutrients and is commonly eaten in tropical Africa.…”