Synthesis of Silver Nanoparticles from Grewia Asiatica Plant and their Applications

Abstract

The production of plant-mediated nanoparticles is becoming more and more popular because it is economical and environmentally friendly. In this study, silver nanoparticles were produced using aqueous extracts of fresh Grewia Asiatica plant leaves as bio-reducing agents. This method made it possible to produce nanoparticles, which UV-visible spectrophotometry confirmed. After being treated with Ag precursors, the fresh leaf extracts' color changed to a brownish-yellow hue based on both visual examination and UV-visible spectra. Moreover, characterization is done using FTIR, SEM, and EDX. Additionally, the extract's ability to suppress biofilms and combat Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli bacteria was assessed. The results showed that extracts containing AgNPs inhibited bacterial growth. To show the zones of inhibition that Grewia asiatica aqueous leaf extracts have against these bacteria, a statistical computation was conducted. TPC and TFC conducted the biological analysis of the plant extract and the nanoparticles that were produced from it; the greatest results were obtained for GA 0.5 and GA 0.3, respectively. The DPPH assay was used to assess their antioxidant capacity, and GA 0.5 had the highest value. AgNPs' ultrasensitive and selective optical response to Hg (II) causes a color shift from yellow to colorless. Spectroscopic analysis was used to conduct the test.