Roja K, Benchilo Ezung and Paul Agastian

In this work, aqueous leaf extracts of Acalypha fruticosa Forssk were used to create silver nanoparticles (AgNPs). The produced AgNPs were subjected to optical structure, surface morphology and antibacterial experiments. The synthesized AgNPs were investigated to utilizing UV-Visible spectroscopy (UV), Fourier transform infrared (FTIR), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX). The synthesis of AgNPs is indicated by a sharp peak in Surface Plasmon Resonance (SPR) at 950-1050 nm wavelength as revealed by UV-visible spectroscopy evaluation. The AgNPs functional groups for Diketones (COOH) and alkaline amines (N-H) are revealed by FTIR analysis. Five different spectral peaks confirmed by the X-ray diffraction investigation at (101), (288), (339), (721) and (100). AgNPs have a rod like shape and range in size from 140-900 nm according to the SEM study. The EDX analysis confirmed that elemental Ag was present in the sample indicating that AgNPs were developing. Antibacterial activity was studied by silver nanoparticles against Gram negative bacterial pathogens such as Escherichia coli, Salmonella typhi and Gram-positive bacteria Streptococcus aureus, Enterococcus faecalis. It proved that the aqueous extracts of Acalypha fruticosa with Ag Nanoparticles to have antibacterial properties comparable to streptomycin.

DOI: 10.22271/phyto.2025.v14.i1e.15265

Pages: 415-421  |  158 Views  54 Downloads