Preliminary Anti-bacterial Activity of Some Indigenous Plants of Bangladesh

Abstract

The antibacterial activity of petroleum ether, carbon tetrachloride and chloroform soluble
fractions of crude methanol extracts of nine indigenous plant species of Bangladesh was evaluated by the agar
diffusion method. Kanamycin (30 μg/disc) was used as a standard antibacterial agent. The results indicated that
all the nine plant species (not all partitionates) exhibited moderate to potent antibacterial activity against a wide
variety of gram- positive and gram-negative bacteria at a concentration of 400μg/disc. Among them the carbon
tetrachloride soluble fraction of whole plant extract of Corriandrum sativum (family-Apiaceae) revealed the
highest antibacterial activity against Shigella boydii with zone of inhibition of 29 mm.