Dosagem de compostos fenólicos, flavonoides, antocianinas e atividade antioxidante de extratos brutos de Richardia Brasiliensis Gomes (Poaia-Branca) produzidos por maceração dinâmica ou banho ultrassônico

Abstract

Secondary metabolites have been the target of research with medicinal plants since the early days, due to their beneficial health properties, highlighting antioxidant and antimicrobial actions. Richardia brasiliensis Gomes is a plant set in the Cerrado, popularly known as PoaiaBranca. It is a medicinal plant of popular use and has expectorant, emetic, diaphoretic, vermifuge effects and for the treatment of hemorrhoids, being possible target for research for pharmacological purposes. The present work aimed the ethanolic extraction of R. brasiliensis natural compounds through two extraction methods, the dynamic maceration and the ultrasonic bath and the quantification of total phenolic compounds, flavonoids, anthocyanin and antioxidant activity. The extractive methods used interfered in the obtained results. Higher total phenolic compounds were observed through the dynamic maceration extraction method in relation to the ultrasonic bath. However, in relation to the total flavonoids and anthocyanins, it was observed a higher amount in the crude extract produced by the ultrasonic bath method in relation to the dynamic maceration. The antioxidant activity was equal in the crude extracts obtained by both methods. Thus, R. brasiliensis proves to be a phytochemical profile medicinal plant that should be further investigated for future pharmacological application