Phytochemical Study and Comparative Antioxidant Activity of Extracts from Aerial Parts of Chenopodium ambrosioidesLinn. (Chenopodiaceae)

摘要

The use of Chenopodium ambrosioides in some communities in Togo reveals style="font-family:""> style="font-family:Verdana;">its importance and its medicinal properties. The plant is often infused for medicinal drinks before use. Thus, through a comparative study, this work style="font-family:Verdana;"> focused on the identification of the different phytochemical groups and then on style="font-family:Verdana;">the anti-radical capacities of ethanolic and aqueous extracts of aerial parts style="font-family:Verdana;"> (lea style="font-family:Verdana;">- style="font-family:""> style="font-family:Verdana;">ves and seeds) of style="font-family:Verdana;">Chenopodium style="font-family:Verdana;">ambrosiooides style="font-family:Verdana;"> obtained by maceration style="font-family:Verdana;">and infusion. The phytochemical tests, carried out on the various extracts, style="font-family:Verdana;">showed style="font-family:Verdana;">that they contained certain biomolecules such as flavonoids and tannins. Likewise, the presence of terpenoids and terpenes has been detected. style="font-family:Verdana;"> However, style="font-family:Verdana;">it is only in aqueous extracts that the alkaloids have been revealed. The style="font-family:Verdana;"> determination of the polyphenol content of the extracts revealed that the aqueous style="font-family:Verdana;">infusion contains 25.699 mgGAE/g DE, followed by the aqueous macera style="font-family:Verdana;">tion: 24.873 mgGAE/g DE, after the ethanolic infusion: 21.009 mg GAE/g style="font-family:Verdana;"> DE and style="font-family:Verdana;">of the ethanolic maceration: 20.625 mg GAE/g DE. The results of the style="font-family:Verdana;"> deter style="font-family:Verdana;">mination of the anti-radical capacity by the DPPH method after calculation of > style="font-family:Verdana;">the IC _{style="font-family:Verdana;">50} style="font-family:Verdana;">, revealed that the infusion gives respectively in aqueous and etha style="font-family:Verdana;">nolic medium: 25.541 style="font-family:Verdana;">μ style="font-family:Verdana;">g/ml and 48.269 style="font-family:Verdana;">μ style="font-family:Verdana;">g/ml while the maceration leads to 29.187 style="font-family:Verdana;">μ style="font-family:Verdana;">g/ml 50.999 style="font-family:Verdana;">μ style="font-family:Verdana;">g/ml respectively. This study showed that each extract reacted with DPPH and the aqueous infusion was the most reactive.