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Antibacterial Activity of Different Extracts of the Plant Bauhinia Variegata

Rajesh Gupta and Padmma M. Paarakh

It was found that aqueous extract has antibacterial activity against Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa and Staphylococcus aureus while methanol extract has this activity against Pseudomonas aeruginosa and Staphylococcus aureus with minimum inhibitory concentration as compared with standard (Penicillin 10 µg/mL and gentamycin 80 µg/mL). The petroleum ether extract and chloroform extracts were active against Staphylococcus aureus and Escherichia coli. The minimum inhibitory concentration for aqueous extract was 10 µg/mL, 10 µg/mL, 50 µg/mL and 50 µg/mL, respectively against Staphylococcus aureus, Escherichia coli, Bacillus subtilis, and Pseudomonas aeruginosa), for methanol extract was 500 µg/mL (Staphylococcus aureus) and 50 µg/mL (Pseudomonas aeruginosa), for petroleum ether extract was 100 µg/mL (Staphylococcus aureus) and 250 µg/mL (Escherichia coli), for chloroform extract was 250 µg/mL (Escherichia coli) and 500 µg/mL (Staphylococcus aureus).