Avaliação do perfil fitoquímico e da propriedade antimicrobiana da espécie fridericia dichotoma (jacq.) l.g.lohmann

Abstract

Medicinal plants has been used for the treatment of various evils since the beginning of civilization. Records of studies on medicinal plants show that since long time, they are the main sources of substances used in the manufacture of various drugs. The present study aimed to evaluate the phytochemical profile and the antimicrobial property of the species Fridericia dichotoma, known as "pá da gia", which is widely used in the region of the Araguaia Valley for therapeutic purposes. Extraction of the plant was obtained using three types of solvents: water, methanol and alcohol. The different types of extracts were evaluated when the phytochemical profile and the antimicrobial property. A great diversity of phytochemical compounds were determineted, as tannins, chalcones, aurones, anthocyanidins, leucoanthocyanidin, catechins, flavones, flavonones, flavonones, xanthones, steroids and triterpenes. S. aureus and E. coli were bacteria more susceptible at methanoic and ethanoic extract in the 50 mg.mL-1 concentration.Aqueous extract did not inhibit any of the bacteria tested. Salmonella sp. no showed inhibition at any of the concentrations tested for all extracts. F. dichotoma presented a diversity of secondary metabolites that are described as antimicrobial, where this characteristic was dependent of the type of extraction, concentration and microorganism.