Extracellular synthesis, characterization and antibacterial activity of Silver nanoparticles by Actinomycetes isolative

Document Type : Reasearch Paper


1 Applied Microbiology Laboratory, Department of Virology, Sri Venkateswara University, Tirupati- 517502 Andhra Pradesh, India.

2 Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Qassim, PO BOX 6699, Kingdom of Saudi Arabia.

3 Department of Physics, Sri Venkateswara University, Tirupati-517502 Andhra Pradesh, India.



The development of the eco friendly procedures makes nanoparticles as the rapidly growing field of nanotechnology. Amongst, the silver nanoparticles have become prominent in the field of medicine to their peculiar antimicrobial properties. In the present study we suggest an eco friendly procedure of extracellular synthesis of silver nanoparticles with an average sizes of 5-50nm using an Actinomycete isolated from mangrove soil.  The silver nanoparticles were characterized with UV-Visible spectrophotometer, FTIR and TEM analysis. The synthesized silver nanoparticles showed an excellent antibacterial property on multidrug resistance gram positive and gram negative bacterial strains.