Green Synthesis and Antibacterial Activity of Silver Nanoparticles Using Dracocephalum Moldavica Leaves Extract

In the presence work we firstly synthesize silver nanoparticles by a green procedure using D. moldavica leaves extract. Nanoparticles were prepared by a simple precipitation method via aid of sun light irradiation in a short time about 15 min. morphology of the nanostructures were characterized by scanning electron microscopy and for better estimation of grain size transmission electron microscopy was also applied. X-ray diffraction pat-tern approved crystallinity and purity of the silver nano products. Dynam-ic light scattering was used for measuring of the size distribution. Ultra vio-let-visible absorption illustrate the band gap of the prepared nanoparticles. The antibacterial activity of silver nanostructures was evaluated against clinical isolates of Escherichia coli bacteria. The Kirby-bauer method was accomplished for determination of zone of inhibition.