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The size of silver nanoparticles makes it available for a wide range of new applications in various fields of industry. The noble metal nanoparticles synthesis for applications such as catalysis , electronics, environment, biological, pharmacological and biotechnology is definitely an area for constant interest . The two main methods for extraction of silver nanoparticles are the physical method and the chemical method. Green synthesis helps in overcoming this limitation , the size of Silver nanoparticles makes it available for a wide range of new applications in various fields of the industry especially in medicine.
Biological methods are being used as a major alternative because this approach is very environment friendly and is less toxic and that also includes plant extracts,microorganism, fungi, etc . The major applications for silver nanoparticles in the field of medicine mainly include diagnostic applications and therapeutic applications apart from its antimicrobial and antioxidant activity . Due to the nanotoxicity, these silver nanoparticles have few drawbacks too. In many contexts, biological approaches using biological molecules derived from plant sources in the form of extracts displayed superiority. These plant based biological molecules undergo highly controlled assemblage to maintain the suitable and the appropriate size for the nanoparticle.