Antimicrobial Potential of Callistemon rigidus.

Abstract

In vitro. investigation of the antimicrobial activity of a crude methanol extract of leaves of Callistemon rigidus. R.Br. (Myrtaceae) revealed potential antibacterial activity against a broad spectrum of multidrug-resistant human pathogens. Agar well diffusion assays of the test extract established significant concentration-dependent antibacterial activity against methicillin-resistant Staphylococcus aureus., vancomycin-intermediate Staphylococcus aureus., vancomycin-resistant Escherichia coli., extended spectrum β.-lactamase-producing E. coli., and multidrug-resistant Pseudomonas. spp.

Keywords:

• Agar well diffusion assay
• antibacterial activity
• multidrug resistant
• Myrtaceae