Phytochemical activity and antioxidant activity of hidroethanolic extract and fractions from Poincianella pyramidalis(tul.) L.P.Queiroz var. pyramidalisstembark

Background Plants are an important source of bioactive compounds with different chemical compositions and biological properties with proven efficacy. Poincianell pyramidalis (Poincianella pyramidalis (Tul.) LP. Queiroz var. pyramidalis), popularly known as catingueira, is a medicinal plant endemic to the Caatinga and almost all parts are used for the treatment of many diseases, such as asthma, gastritis, fever, diarrhea, stomach pains and coughing. Despite the great biodiversity in Brazil and the therapeutic potential presented by several species, there are few studies in vivo and in vitro of extracts derived from plants. Thus, the general objective of this study was to outline the phytochemical profile, evaluate the antioxidant activity of extract and fractions and analyze the chromatographic profile by HPLC-DAD from polar fractions of the stem bark of P. pyramidalis.