Avaliação das concentrações de macro e micro elementos das folhas de synadenium grantii hook.f. (euphorbiaceae)

Abstract

Synadenium grantii Hook f. is used as a mode of treatment of variety of ailments in Brazil. In the present study, evaluation of mineral contents (K, Mg, Na, P, Cr, Cu, Fe, Mn, Mo, Zn, Si, Ni, Co, Cd and Al) from leaves of Synadenium grantii Hook f. was carried out using ICP-OES after microwave digestion. Results demonstrated that the Synadenium grantii Hook f. (Euphorbiaceae) leaves are source of K but aren't the best source of Na and P. Its leaves are rich in elements such as Mg, Cr, Cu, Fe, Mn, Mo and Zn. The leaves of Synadenium grantii Hook f. (Euphorbiaceae) showed a high content of Mg values according to tolerable upper intake level. However, Fe, Na, P, Mn, Mo and Zn are below the values tolerable upper intake level. The leaves of these plants have elements as Ni, Cu, Cr, Cd above the permissible limit set by WHO and FAO. The gaps in knowledge about the level of contents in the Synadenium grantii Hook f. (Euphorbiaceae) was completed in this work and would serve as a tool for deciding the dosage of prepared from this plant with medicinal purposes. Brazil should create legal standards for the use of medicinal plants based on internationally practiced requirements.