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<p>A green synthesis method has been used in the present study for the synthesis of silver nanoparticles (AgNPs). The non-toxic ethanolic and aqueous extract from the stem of <i>Asparagus officinalis</i> (AO) has been used as a reducing and stabilizing agent. The presence of biosynthesized AgNPs in the reaction mixture was visually validated by a color change and eventually determined by UV-Visible spectroscopy. The UV-Visible absorption spectra exhibited a surface plasmon resonance band at 460 nm and 440&#xa0;nm that strongly confirmed the development of AgNPs in both the ethanolic and aqueous extracts. The molecular structure and molecular weight of the bioactive compounds present in the extracts were identified using GC-MS. FT-IR analysis was used to study the extraction mechanism. The X-ray diffraction spectra validated the face-centered cubic structure of the biosynthesized AgNPs. TEM and SEM studies disclosed that the AgNPs synthesized using ethanolic and aqueous extracts of AO are predominantly spherical and quasi-spherical in shape, with an average particle size ranging between 60–70 and 40–50&#xa0;nm. The biosynthesized AgNPs were investigated for antimicrobial activity utilizing the disk diffusion method. The biosynthesized AgNPs exhibited good antibacterial activity on the growth of <i>Staphylococcus aureus</i>.</p>

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Effect of Solvents in Bio-Inspired Silver Nanoparticles Mediated by Asparagus Officinalis Extracts with Evaluation of Their Structural, Morphological, and Antibacterial Properties

  • 期刊论文

  • 发表日期：

    2025年3月10日

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  • Hassan Mahmoodi Esfanddarani,
  • Mrutyunjay Panigrahi

摘要

A green synthesis method has been used in the present study for the synthesis of silver nanoparticles (AgNPs). The non-toxic ethanolic and aqueous extract from the stem of Asparagus officinalis (AO) has been used as a reducing and stabilizing agent. The presence of biosynthesized AgNPs in the reaction mixture was visually validated by a color change and eventually determined by UV-Visible spectroscopy. The UV-Visible absorption spectra exhibited a surface plasmon resonance band at 460 nm and 440 nm that strongly confirmed the development of AgNPs in both the ethanolic and aqueous extracts. The molecular structure and molecular weight of the bioactive compounds present in the extracts were identified using GC-MS. FT-IR analysis was used to study the extraction mechanism. The X-ray diffraction spectra validated the face-centered cubic structure of the biosynthesized AgNPs. TEM and SEM studies disclosed that the AgNPs synthesized using ethanolic and aqueous extracts of AO are predominantly spherical and quasi-spherical in shape, with an average particle size ranging between 60–70 and 40–50 nm. The biosynthesized AgNPs were investigated for antimicrobial activity utilizing the disk diffusion method. The biosynthesized AgNPs exhibited good antibacterial activity on the growth of Staphylococcus aureus.