• NIMLY P.
• SHAMINA M.

Cyanobacteria represent a group of highly diverse, widely distributed and ecologically important prokaryotes. Freshwater cyanobacteria are known to synthesize a variety of biologically active and structurally diverse secondary metabolites that have potential pharmaceutical applications. The antibacterial activity of the methanolic extract of the cyanobacterium Nostoc humifusum against two bacteria Staphylococcus aureus and Pseudomonas aeruginosa were studied. The antibacterial activity was determined by agar disc diffusion method on solid nutrient agar medium. The methanolic extract of Nostoc humifusum showed significant antibacterial activity against the two tested bacteria by expressing various zones of inhibition. The present study reveals the presence of potential antibacterial compounds in the selected cyanobacterium Nostoc humifusum.

Nostoc, antibacterial activity, methanolic extract.

"Evaluation of antibacterial activity of cyanobacterium Nostoc humifusum Carmichael ex Bornet & Flahault", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.85-87, May-2019, Available :http://www.jetir.org/papers/JETIR1905016.pdf

"Evaluation of antibacterial activity of cyanobacterium Nostoc humifusum Carmichael ex Bornet & Flahault", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp85-87, May-2019, Available at : http://www.jetir.org/papers/JETIR1905016.pdf