Most of the researchers have been reported about the nontoxic biosynthesis of silver nanoparticles using several microorganisms and plant extracts. This ecofriendly silver nanoparticles exhibit completely new or improved properties based on specific characteristics such as size, distribution, morphology and many applications. In this research the synthesis of silver nanoparticles using plant Tridax procumbens has been investigated. We have synthesized silver nanoparticles by adding the 50ml of 1mM silver nitrate solution in to the plant extract and characterized by uv-vis absorption spectroscopy, and SEM techniques. This techniques showed that the size 55nm as well as revealed the structure. The antimicrobial efficacy also determined by Kirby-bour method with E.coli, Salmonella, Shigella and Vibrio cholera and it showed that high level of inhibition. The most outcome of this research will be suggested that biologically synthesized silver nanoparticle has more effective against various disease causing pathogens.
