Artigo de Periódico
Marcadores químicos em espécies de Echinodorus (Alismataceae) utilizadas como chapéu-de-couro
Fecha
2021-05-13Autor
Rizia Rodrigues Santos
Francine Souza Alves da Fonseca
Alcinei Místico Azevedo
Ernane Ronie Martins
Institución
Resumen
The name “chapéu-de-couro” is given to plants belonging to genus Echinodorus(Alismataceae) These are native and popularly used as diuretic and anti-inflammatory. The species E. macrophyllusand E. grandiflorushave the recommended use by the Brazilian Pharmacopeia. However, due to the phenotypic plasticity of the genus, precise identification is difficult, therefore, E. floribundusand E. subalatus have been used by the population for the same purpose. The aim of the work was to evaluate chemical markers for the species E. floribundusand E. subalatusand their chemical similarity with the species described in the Brazilian Pharmacopeia. Phytochemical screening revealed the presence of phenols, flavonoids, flavones, flavonols, xanthones, steroids and triterpenoids in the extracts. However, both species presented lower values of flavonoids and total phenols when compared with E. scaber. The characterization of aqueous leaf extract in high performance liquid chromatography (HPLC-DAD) detected 118 and 121 compounds in E. floribundusand E. subalatus, respectively. Of these, 25 showed characteristic UV-Vis spectra of phenolic compounds. Markers chicory acid and isoorientin, present in Echinodorus, weren’t detected. The levels of o-hydroxycinnamic acid derivatives for E. floribundus and E. subalatus(5.52% and 3.07%, respectively) were higher than required by the Brazilian Pharmacopeia. Thus, there are chemical differences between Echinodorus floribundusand Echinodorussubalatusand those described by the Brazilian Pharmacopeia, however, there are indications of pharmacological potential of the species studied.