To study the antibacterial activity of leaf extract of Azadirachta indica on Staphylococcus aureus and Escherichia coli

Abstract

Azadirachta indica also known as neem in India is a widely used plant for its great medicinal potential. The ethanolic extracts of the A. indica showed highest antimicrobial potential against the gram-positive bacteria S. aureus with 2.7±0.2 mm zone of inhibition. The aqueous extracts of A. indica also inhibited the S. aureus with 2.2±0.2 mm zone of inhibition. E. coli was not inhibited by either aqueous or ethanolic extracts of A. indica.