**5. Conclusion**

The natural ability of the cyanobacteria to produce high levels of exopolysaccharide (EPS) has made them potentially attractive hosts. The present study was focused on the extraction and characterization of exopolysaccharide from cyanobacterial species namely *Phormidium tenue*. The exopolysaccharides are nothing but polysaccharide which are present on outer surface of the cell or released into the surrounding environment. The preliminary study was focused on extraction methodologies using acetone. Once the best extracting solvent was known, the studies were emphasized on the time-course analysis of the exopolysaccharide yield (released and capsular polysaccharide) from the *P. tenue* (cyanobacterial species). Green synthesis of silver nanoparticle from *P. tenue* (Cyanobacteria). The study was to characterize the silver nanoparticle through XRD, FTIR, SEM and UV-VIS spectroscopy. Later, the enhancement in microalgae growth and exopolysaccharide from *P. tenue* was observed by applying various concentrations (0.1 mg) of silver nanoparticle. Thus, the conclusion that can be drawn from the present study are:


*Green Synthesis of Silver Nano-Particle from Cyanobacteria and Effect on Microalgal Growth… DOI: http://dx.doi.org/10.5772/intechopen.106039*
