Antimycobacterial evaluation of Peruvian plants.

We present the results of an antimycobacterial screening of 270 Peruvian plant samples representing 216 species from 171 genera in 63 families. Dichloromethane extracts were tested at a concentration of 50 microg/ml for inhibition of Mycobacterium tuberculosis in radiometric culture. Slightly more than half of the samples tested showed inhibition of M. tuberculosis at this concentration.