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Abstract

ANTIMICROBIAL ACTIVITY OF VARIOUS EXTRACTS OF THE SPIRULINA PLATENSIS AGAINST VIBRIO FLUVIALIS

Author(s): ALAKANTI PRASANNA, DANTA HIMA BINDU, RAHAMAT UNISSA

The aim of the present study was to evaluate antibacterial activity of the crude extracts of Spirulina platensis against a marine pathogen. Crude algal extracts were prepared in water, ethanol and acetone with different concentrations and tested against Vibrio fluvialis. Highest activity was observed in the water extracts and the least in acetone. Aqueous extracts showed highest zone of inhibition of 19mm in diameter followed by ethanol extract and acetone extract which revealed zone of inhibition of 15mm and 09mm in diameter respectively.Average minimum inhibitory concentration of water, ethanol and acetone extract had shown 250µg/ml, 500µg/ml and 750µg/ml concentration respectively.

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