Atividade antimicrobiana de extratos hidroalcoólicos de Lafoensia pacari A. St.-Hil., Lythraceae, frente a bactérias multirresistentes de origem hospitalar

Abstract

Multiresistant pathogenic microorganisms are responsible for million of death all the world, mainly Pseudomonas aeruginosa and Staphylococcus aureus that are responsible for great part of hospital infections. The concern with this species does new researches to find out alternatives to control these microorganisms in the way more efficient and more economic. The phytoterapic extracts are promissory alternatives for that purpose because they are an immense source of biological action. The objective of this study was to evaluate the antimicrobial activity of Lafoensia pacari A. St.-Hil., Lythraceae, extract on multiresistant bacterial strains (P. aeruginosa, S. aureus) that have been isolated from patients with multiple infections occupying an Emergency Unit from Maceió in Brazil. The antibacterial activity experiments were evaluated by agar diffusion tests. Agreeable us experiments in vitro, ascertain that 96,4% of bacterial strains utilized in this research have showed susceptible to the plant's leaf extract, it means an excellent antibacterial activity. Halos of bacterial inhibition until 26 mm were observed. Thus, it can be concluded that the Lafoensia pacari extract has showed as an excellent product to combat multiresistant bacterial.