Research Article Which Approach Is More Effective in the Selection of Plants with Antimicrobial Activity?

Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The development of the present study was based on selections using random, direct ethnopharmacological, and indirect ethnophar-macological approaches, aiming to evaluate which method is the best for bioprospecting new antimicrobial plant drugs. A crude extract of 53 species of herbaceous plants collected in the semiarid region of Northeast Brazil was tested against 11 microorganisms. Well-agar diffusion andminimum inhibitory concentration (MIC) techniqueswere used. Ten extracts fromdirect, six from random