In-vitro testing of various indeginous plant extracts on human pathogenic bacteria

ABSTRACT

Differentt parts and different extracts of twenty-six plants were tested against fourteen pathogenic bacteria for general screening. Out of these, thireen plants showed an inhibitory activity against at least one test-bacteria, though there was a variation regarding the size of zones of inhibition. The thirteen plants showing zones of inhibition were Artemisia vulgaris, Brucea sumatrana, Coptis teeta, Yin-bya (unindentified yet), Euphorbia hirta, Hiptage madablota, Lawsonia alba, Myristica fragrans, Pithecolobium dulce, Pterocarpus santalinus, Quisqualis indica, Stephenia hernandifolia, and Symplocos santalinus, Quisqualis indica, Stephenia hernandifolia, and Symplocos paniculata. The antimicrobial spectrum and bacteriostatic or bactericidal effect of the plants were also determined.