Plant Mediated Green Synthesis of Metallic Nanoparticles and its Biomedical Applications

Abstract

Nanoparticles (NPs) synthesized by green techniques have received reseachers attention due to their unique physicochemical characteristics and their immense applications in various field. In recent years, synthesis of metal nanoparticles (MNPs) by green technique using plant extracts has become centre of attraction researchers because these NPs have low hazardous effect on the environment and also low toxicity for the human body. The plant extract contains various secondary metabolites which act as a reducing and stabilizing for various metallic nanoparticles synthesis. The non-biological methods i.e. the conventional chemical and physical methods are highly toxic and have serious hazardous effect on human beings and other organisms. On the other hand, the biological or green synthesis of metallic nanoparticles is less expensive, single step process, eco-friendly and also shows effective result. Different plant extracts has been used successfully with various metallic nanoparticles such as, copper, silver, gold, palladium, platinum and zinc oxide. Also, these nanoparticles have potential to cure many diseases such as cancer, hepatitis, malaria, and other deadly diseases. This paper presents a review on plant mediated synthesis of metallic nanoparticles by green technology.