Silver Nanoparticles - A Review with Focus on Green Synthesis
The present review focuses on the green synthesis of silver nanoparticles by using an endophytic fungus, the properties of silver nanoparticles and the general techniques by which nanoparticles can well characterized. Silver has been used since ancient time due to its potent antimicrobial effect and now it is recognized as a non toxic and safe for human beings. Silver nanoparticles have attracted keen interest due to its specific size ranges 1-100 nm and its unique physical, chemical and biological properties. There are several methods reported for the synthesis of silver nanoparticles including physical, chemical and biological methods in which biological method are cheap, reliable, safe and non toxic over physical and chemical methods. Furthermore green synthesis technique is a promising approach for synthesis of silver nanoparticles showing antimicrobial effect as its not uses any toxic chemicals and specific higher temperature and pressure. But use of endophytic Fungi provides shield and survival condition to their host plants by secreting large amount of protein which can in a straight way convert to higher output of nanoparticles as well as can avoid the quick lessening of plant sources. These are characterized for physical and chemical properties of silver nanoparticles such as optical, magnetic and catalytic properties etc. by which nanoparticles shows influence in their reactivity as compared to macrostructures.