Browsing by Author "Nahimana, David"

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    Effect of wastewater phytoremediation process on the chemical composition of Eichhornia crassipes and Pistia stratiotes.
    (IJGHC, Vol.10, No.4, 301-312, 2021-09) Ntakiyiruta, Pierre; Ossey Clovis Seka; Bi Gouessé Henri Briton; Nahimana, David; Kouassi, Edmond Konan; , Adouby, Kopoin; Yao Kouassi, Benjamin,; Ntakimazi,Gaspard
    Eichhornia crassipes and Pistia stratiotes are known for their ability to remove pollutants from wastewater. However, the latter often represent an external aggression towards these two plants. The objective of this study is to investigate the variation in the elemental and secondary metabolite composition that are secreted by these two plants to deal with external aggressions. The different secondary metabolites were identified and quantified, according to the standard procedure, in Pistia stratiotes and Eichhornia crassipes species from two countries (Burundi and Côte d’Ivoire). The results of the phytochemical screening revealed the presence of flavonoids, tannins and polyphenols and the absence of sterols, alkaloids and terpenoids. The quantitative analysis revealed a high concentration of total flavonoids compared to tannins and polyphenols, regardless of the plant used (Eichhornia crassipes or Pistia stratiotes) or the country in which it was harvested. Moreover, the species harvested in Burundi are richer in these metabolites than those harvested in Côte d'Ivoire. Elemental analysis revealed the presence of macroelements (S, Na, Mg, Cl, P and K), microelements (Fe, Zn and Br) and trace elements (Mn, Si and Al).