Antibacterial activities of few exclusive mangrove species : Avicennia alba, A.lanata, Sonneratia ovata, S. caseolaris, Acanthus ilisifolius and Heritera littoralis

Abstract

Antibacterial activities of methanol crude extract of six exclusive mangroves species were investigated to determine the antibacterial activity of few exclusive mangroves, the minimal inhibitory concentrations for antibacterial activities and the plant with highest antibacterial activity. These studies were crucial to find new sources of antibacterial and explore new dimension of mangrove in pharmaceutical field. The extracts of Avicennia alba, A. lanata, Sonneratia ovata, S. caseolaris, Acanthus ilisifolius and Heritera littoralis were tested against seven pathogenic bacterial which are three Gram positive bacteria; Staphylococcus aureus, Bacillus subtilis, Micrococcus sp., and four Gram negative bacteria; Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae and Vibrio fischeri by using disk diffusion method. Sonneratia caseolaris, S. ovata and Heritera littoralis were shows antibacterial activities against Staphylococcus aureus, Micrococcus sp. and Bacillus subtilis.