Antimicrobial activity of blue-green and green algae
Department of P.G. Studies and Research in Botany, Gulbarga University, Gulbarga-585 106, India
G M Vidyasagar Department of P.G. Studies and Research in Botany, Gulbarga University, Gulbarga-585 106 India E-mail: [email protected]
The methanolic extract of a blue-green alga and two green algae have been investigated for in vitro antimicrobial activity against Proteus vulgaris, Bacillus cereus, Escherichia coli, Pseudomonas aeruginosa, Aspergillus niger, Aspergillus flavus and Rhizopus nigricans using agar cup-plate method. Blue-green alga, namely, Microchaete tenera ; and green algae, namely, Nitella tenuissima and Sphaeroplea annulina , showed significant antibacterial activity against Pseudomonas aeruginosa . Microchaete tenera showed good antimicrobial activity against Proteus vulgaris and Aspergillus niger. Sphaeroplea annulina showed feeble antifungal activity against Aspergillus flavus.