Silver nanoparticles (AgNPs) have shown excellent bactericidal properties against a wide range of microorganisms. Since AgNPs are smaller than the microorganisms, they diffuse into cell and rupture the cell wall. The smaller nanoparticles are more toxic than the bigger ones. AgNPs are also used in packaging to prevent damage of food products by pathogens. Biological synthesis of AgNPs from herbal extract and/or microorganisms has appeared as an alternative approach as these routes have several advantages over the chemical and physical methods of synthesis because: First, plants and their...