Green synthesis, characterization, and antimicrobial activity of silver nanoparticles synthesized using Annona squamosa L. leaf extract
S. Justin Raj1*, Joyal Vijay Raj R2 , N. Rajeswari3 , Reshmi R. P4 and Greeshma. V. John5
3Department of Zoology, Muslim Arts College, Thiruvithancode - 629157 (India) 1,2,4,5PG. Department of Biotechnology, Malankara Catholic College, Mariagiri, Kaliyakavilai - 629153 (India) Affiliated to Manonmaniam Sundaranar University, Tirunelveli - 627012 (India) Corresponding author’s Email: rajstephy6@gmail.com
ABSTRACT
A green synthesis of silver nanoparticles (AgNPs) has drawn a lot of interest because it is scalable, economical, and environmentally benign. In this work, silver nanoparticles were quickly biosynthesised using leaf extract from Annona squamosa L. Fourier Transform Infrared (FTIR) spectroscopy, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and UV-Vis spectroscopy were used for characterization. At 435 nm, surface plasmon resonance was detected by UV-Vis examination. SEM showed that the nanoparticles were spherical and ranged in size from 35 to 90 nm. While FTIR investigation revealed functional groups involved in reduction and capping, XRD verified the crystalline nature. Pseudomonas aeruginosa, Klebsiella pneumoniae, and Escherichia coli were all significantly inhibited by the produced AgNPs. These results show the potential of AgNPs mediated by A. squamosa in antibacterial applications.