No abstract

Marine cyanobacterial exopolysaccharides are natural biopolymers well known for their potentials in various fields. As there is an increase in demand for a new polymer, fifteen (15) strains of different morphotypes unicellular, filamentous and filamentous heterocystous belonging to varied habitat were screened for EPS production. EPS synthesis was found to be coupled with incubation duration, growth phase, which reflected on the rheology of the medium. Filamentous heterocystous strain Nostoc sp BDU 80591 of salt pan habitat yielded (2.8 gL -1 ) EPS exhibited (4.64 cP) as viscosity.