ANTIMICROBIAL ACTIVITY OF MARINE ALGAE OF VISAKHAPATNAM CITY, ANDHRA PRADESHC.H. VINEELA AND K. M. ELIZABETH.Abstract Certain marine algae from the rocky shore of Visakhapatnam have been screened for their an tinticrobial activity by disc diffusion method. The algae tested in this study %vete Lllutfusciata. Gnu-dans cornea's', Sargassum species, En leromorpha species, Padina lefraslromalica. Spongomorpha nun. and Amphiroa frosilissinta. The crude extract of Sargasso., species at 5 mg concentration formed zone of inhibition ranging frost 10-15 rnm against the microorganisms used, Salmonella typhnnuniunt and Y rms./incm with highest zone and Candid, albicans with lowest zone indicating that this extract was more effective. against S. fyphimurium, Y. enierocolitica and less effective against C albicans. Enna fasciatain most effective awls( Bacillus sublilis forming 22 moo zone of inhibition and also towards Y enterocolnna forming 20 non zone of inhibition. The crude extract, of other algae were not very effective against other microorganisms tested.
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