Antibacterial Activity of Three Mangrove Plants Against Methicillin Resistant Staphylococcus aureus

Dr R Shanmuga Priya

Abstract


Aqueous and methanol extracts from three mangrove plants Rhizophora apiculata, Rhizophora annamalayana and Avicennia marina were tested against 10 isolates of methicillin resistant Staphylococcus aureus using disc diffusion method and evaluated minimum inhibitory concentration and minimum bactericidal concentration. The mean zone of inhibition produced by the extracts in agar diffusion assays against the test bacteria ranged from 8.4 to 23.7 mm. The minimum inhibitory concentrations were between 0.120 and 3 mg/ml, while the minimum bacterial concentrations were between 0.21 and 7 mg/ml. The antibacterial activity of methanol extracts was higher than that of aqueous extracts.


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