Green Fabrication of Silver Nanoparticles Using Symphyotrichum Subulatum Stem Extract, their Characterization and Biological Properties

Abstract

Wajid Ali*, Aftab Alam*, Waqas Ahmad*, Abdul Wahab, Abas Khan, Shema Bibi4 and Azra Bibi

Silver nanoparticles (AgNPs) were synthesized via a green method using the aqueous stem extract of Symphyotrichum subulatum Michx. The extract effectively reduced Ag+ ions from AgNO3 without additional chemicals, confirmed by a visible color change. Characterization through XRD, FTIR, and SEM revealed crystalline FCC-structured, spherical AgNPs (~50 nm) stabilized by plant phytochemicals. The AgNPs exhibited significant antibacterial activity against Staphylococcus aureus (93%) and E. coli (80%), along with broad antifungal activity, notably against Trichophyton rubrum (87%). This study highlights a simple, eco- friendly synthesis route and the biomedical potential of plant-mediated AgNPs.

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