Antifungal and antibacterial potential of vegetable extracts of the Divinópolis/MG region

Abstract

Plant extracts from different Brazilian biomes have been used as natural drugs without treatment of various diseases. We are currently faced with a worldwide public health problem: microbial resistance to drugs traditionally employed. Most of the higher plants have compounds with antimicrobial action for protection against invasive microorganisms. In this context, the objective of this study was evaluate the antimicrobial potential of plant extracts of species collected in the region of Divinópolis/MG. Hydroethanolic extracts were obtained from aerial parts of specimens. Bidens subalterns extracts, Anadhenantera columbrina, Annona mucosa, Eugenia dysenteryca, Inga vera, Tecoma stans and Crotalaria stipularia were tested. For the bioassays with the tests the Disc-Diffusion tests in agar and CIM/CBM. Was used the following reference microorganisms: Escherichia coli ATCC 29214, Klebsiella pneumoniae ATCC43816, Enterobacter aerogenes ATCC 13048, Acinetobacter baumannii ATCC19606, Candida albicans ATCC18804 and Candida glabrata ATCC2001. B. subalterns extracts presented bactericidal effect against E.coli and bacteriostatic against A.baumanii and E.aerogenes. A. mucosa presented bacteriostatic effect against E.coli and E.dysenteryca bacterial effect against S. aureus. T.stans presented bactericidal effect against E.coli and bacteriostatic in A.baumanii and E.aerogenes. The extracts showed no antifungal effect against C.albicans and C.glabrata. The results obtained in this study confirm the great potential for the development of new antimicrobials based on extracts obtained from aerial parts of vegetables from the region of Divinópolis/MG.