Antibacterial activity of some selected medicinal plants used by the Marma and Tripura indigenous communities of Bandarban and Chittagong districts of Bangladesh

摘要

Thirty-one medicinal plants of 24 families, used by the indigenous people of Bangladesh for health care, were screened and bioprospected for their antibacterial activity against eight pathogenic bacteria (Bacillus subtilis, B. megaterium, B. cereus. Staphylococcus aureus, Escherichia coll. Vibrio cholerae. Salmonella typhi and Shigella dysenteriae) using disc diffusion and agar cup assays. Twenty six plants showed positive antibacterial efficacy with Phyllanthus emblica, Terminalia chebula, Justiciaadhatoda, Ocimin sanctum, Solanum torvum and Flemingia stricta depicting the most significant zone of inhibition. Maximum zone of inhibition (21mm) was recorded against cholera with the fruit extracts of Solanum ton/um. The present study supports the traditional uses of medicinal plant by the indigenous communities for treating microbial infections and could constitute a potential source for the discovery of new antibiotics.