Screening of Antibacterial Activity of Aqueous Bark Extract of Bombax ceiba against some Gram Positive and Gram Negative Bacteria

Digge V.G, Kuthar Sonali S, Ho

Abstract

Objective: To evaluate the antibacterial activity of aqueous extracts of the bark of Bombax ceiba. Methods: To evaluated for their antibacterial activity using the Pour plate method. It was tested against six medically important bacterial strains, namely Gram-positive Bacteria (Bacillus subtilis, Bacillus aureus and Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli, K pneumoniae, and Pseudomonas aeruginosa). Result: The potency of the microorganisms to the aqueous extracts of Bombax ceiba was compared with standards drug i.e. Gentamicin. The aqueous extract was more significant against Gram-positive bacteria than against Gram-negative bacteria. The 100 μg/ml showed the best antibacterial activity as compared to the standard. Conclusion: The aqueous extracts of Bombax ceiba which contains Tannins due to the presence of tannins shown significant antibacterial activity.