DOI: 10.36347/sajb.2013.v01i05.003

Pages: 154-158

Cyanobacteria are a remarkable group of photosynthetic prokaryotes. It survives in wide range habitat in soil and also morphologically various from unicellular to filamentous thalli. Blue green algae produced many metabolites including amino acids, proteins, vitamins and plant growth regulators i.e. auxins, gibberellins and abscisic acids. The present study is to estimate biomass, total protein and plant growth hormone (Indole-3-acetic acid) in their culture filtrate during various incubation times using BG-11 broth. Protein and Indole-3-acetic acid was estimated from culture filtrate by standard protocols. By observing it was found that amount of biomass, protein and IAA was increased with incubation time and shows maximum concentration as 300 mg, 750 µg/ml and 4.0 mg/L after 30 days respectively by Nostoc spp.