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 pattern approved crystallinity and purity of the silver nano products. dynamic light scattering was used for measuring of the size distribution. ultra violet-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.