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Antimicrobial activity of two diazotropic Cyanobacteria against Staphylococcus aureus

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Author(s): Shantanu BHATTACHARYYA | Pratibha Rani DEEP | Binata NAYAK | Monalisa PANIGRAHI | Bharati MOHAPATRA

Journal: International Journal of Medicinal and Aromatic Plants
ISSN 2249-4340

Volume: 3;
Issue: 2;
Start page: 283;
Date: 2013;
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Keywords: Algal extract | Antibacterial activity | Cyanobacteria | Antimicrobial agent | Antibiotics

ABSTRACT
Cyanobacteria are being recognized as a potent source of antibiotic with antimicrobial activities during the last two decades. In this study freshwater algae two Anabaena species were tested for its antimicrobial activity with the agar well diffusion method against gram positive bacteria Staphylococcus aureus. In vitro study of antibacterial activity of different organic extracts of Anabaena sp is done. The activity was assessed by using aqueous, acetone, methanol and hexane extracts. These extracts showed specific activity in inhibiting the growth of Staphylococcus aureus. The methanolic extract showed largest zone of inhibition compared to other extracts. Our results indicate that these species has a significant capacity for being used as potent natural antibiotics.
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