Atividade biológica do extrato hidroalcoólico de Bauhinia forficata Link sobre Herpetomonas samuelpessoai (Galvão.) Roitman

Numerous efforts have been directed to discover the role and the value of plants in therapy. This work aimed to evaluate the antimicrobial activity, mutagenicity, toxicity and effects on growth and differentiation of Herpetomonas samuelpessoai of the hydroalcoholic extract of Bauhinia forficata. To evaluate the antimicrobial activity it was performed the agar diffusion test, minimum inhibitory (MIC) and microbicidal (MMC) concentrations. The in vivo clastogenic and / or aneugenic potential was evaluated using the micronucleus test in mice bone marrow Swiss albinus. It was also determined the median lethal dose (LD50). The extract inhibited the growth of eight bacteria, being more active against Gram-positiveones, and was not active against fungi. The microorganisms tested had MIC concentrations of 2000, 1000, 500 and 250 mg / mL. The results showed that the tested concentrations (500, 1000 and 2000 mg / kg) had no statistically significant increasedthe micronucleus. There was no action on the growth and differentiation of Herpetomonas samuelpessoai at the concentrations tested. In respect to the LD50, the extract showed no toxicity.