Extracellular biosynthesis of silver nanoparticles using Cassia fistula extract and in-vitro antimicrobial studies.

摘要: The synthesis of extracellular silver nanoparticles by biological method is one of the easier and convenient than that of the physical or chemical method of synthesis. The silver nanoparticles are synthesized using the dried plant leaves of Cassia fistula treated with silver nitrate solution. Silver nanoparticles are synthesized due to the reduction of the silver ions. The synthesized silver nanoparticles are characterized in different ways such as UV-Visible Spectrophotometer, XRD analysis, EDX analysis, HR-TEM analysis. The characterized silver nanoparticles are studied for their antibacterial and antifungal activities against different pathogenic microorganisms. From the antimicrobial study, it has been found that the synthesized silver nanoparticles are susceptible to Pseudomonas aeruginosa and Curvularia lipolytica which shows maximum zone of inhibition. The plant material mediated synthesis of silver …