The appearance of a dark brown color in the biomass after reaction with the Ag+ ions is a clear indicator of the reduction of metal ions and formation of silver nanoparticles. Silver nanoparticles exhibit light yellow to brown for silver due to excitation of surface plasmon vibrations in the particles. Microbially synthesized Silver nanoparticles are found to have characteristic absorption peak at 415 nm (Figure 1) indicating the formation of nano silver particles.