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<p>This study explores the biosynthesis of gold nanoparticles (Au NPs) using leaf extracts from the <i>Capparis</i> plant and investigates their potent antibacterial properties. Employing a biological approach, Au NPs were synthesized. To verify, characterize, and confirm the structure and morphology of the synthesized Au NPs, UV–Vis absorption spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction analysis (XRD), dynamic light scattering (DLS), and Fourier-transform infrared spectroscopy (FTIR) were employed. The characterization revealed that the size and shape of the produced nanoparticles are in the range of 18–45&#xa0;nm and spherical, respectively. Subsequently, the biological synthesis of the Au NPs was confirmed. To assess their antibacterial properties, culture medium containing <i>Staphylococcus aureus</i> and <i>Escherichia coli</i> bacteria was prepared, and different concentrations of Au NPs suspensions, alongside gentamicin antibiotic, were introduced. The findings conclusively demonstrate the antibacterial efficacy of biologically synthesized Au NPs using <i>Capparis</i> plant extracts.</p>

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Green Synthesis of Au NPs from Capparis (Legji) Plant Extracts: An Antibacterial Study

  • 期刊论文

  • 发表日期：

    2025年10月15日

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  • Mehdi Gerami,
  • Samer Asadi,
  • Somayeh Lashgari

摘要

This study explores the biosynthesis of gold nanoparticles (Au NPs) using leaf extracts from the Capparis plant and investigates their potent antibacterial properties. Employing a biological approach, Au NPs were synthesized. To verify, characterize, and confirm the structure and morphology of the synthesized Au NPs, UV–Vis absorption spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction analysis (XRD), dynamic light scattering (DLS), and Fourier-transform infrared spectroscopy (FTIR) were employed. The characterization revealed that the size and shape of the produced nanoparticles are in the range of 18–45 nm and spherical, respectively. Subsequently, the biological synthesis of the Au NPs was confirmed. To assess their antibacterial properties, culture medium containing Staphylococcus aureus and Escherichia coli bacteria was prepared, and different concentrations of Au NPs suspensions, alongside gentamicin antibiotic, were introduced. The findings conclusively demonstrate the antibacterial efficacy of biologically synthesized Au NPs using Capparis plant extracts.