Green Biosynthesis of Silver Nanoparticles from Syrian Sidr Leaf Extract

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Researchers from Damascus University have developed a sustainable method for synthesizing silver nanoparticles using Syrian Sidr leaf extract. The study investigates the effective green biosynthesis of silver nanoparticles (AgNPs) from silver nitrate (AgNO3) as a precursor, utilizing three extraction methods and six solvents. The results show that the Soxhlet method with a methanol/water mixture (60:40) provides the highest phenolic and flavonoid yields, suitable for nanoparticle biosynthesis.

Key Takeaways:

  • The study demonstrates a green biosynthesis method for silver nanoparticles using Syrian Sidr leaf extract, reducing the need for toxic chemicals.
  • The Soxhlet method with a methanol/water mixture (60:40) yielded the highest phenolic (192.83 ± 0.3 mg g-1) and flavonoid (59.48 ± 7.45 mg g-1) yields.
  • Characterization techniques, including UV-Vis spectroscopy, FTIR, XRD, SEM, and EDX, confirmed the synthesis and physicochemical properties of the silver nanoparticles.
  • The biosynthesised ZL-AgNPs exhibited significant antibacterial activity against Escherichia coli and Staphylococcus aureus.
  • The study suggests that green-synthesised silver nanoparticles have strong antibacterial potential for prospective biomedical applications.

Statistics:

  • Phenolic yield: 192.83 ± 0.3 mg g-1
  • Flavonoid yield: 59.48 ± 7.45 mg g-1
  • Average crystallite size: 11 nm
  • Inhibition zones for E. coli: 13.76 ± 0.25 to 21.65 ± 0.34 mm
  • Inhibition zones for S. aureus: 0-16.73 ± 0.21 mm

Sources:

  • Characterization and Antibacterial Effect of Green-synthesised Silver Nanoparticles Using Different Extraction Methods From ziziphus Spina-christi (Sidr) Leaf Extract Collected From Syria. RSC Advances, 2025;15(42):35642-35659.
  • Royal Soc Chemistry, Thomas Graham House, Science Park, Milton Rd, Cambridge CB4 0WF, Cambs, England.
  • Additional information may be obtained by contacting Abeer Alassod, Damascus University, Faculty of Mechanical & Electrical Engineering, Text Ind Mech Engn & Tech Dept, Damascus, Syria.