Temperature-Dependent Biosynthesis and Comparative Characterization of Silver Nanoparticles by Stenotrophomonas maltophilia With Multifunctional Activities

Authors

  • Esra Erkoç ANKARA UNIVERSITY
  • Seval Taliboğlu ANKARA UNIVERSITY
  • Filiz Korkmaz ATILIM UNIVERSITY
  • Hakan Eskizengin ANKARA UNIVERSITY
  • Fadime Kıran ANKARA UNIVERSITY
  • Nur Koçberber Kılıç ANKARA UNIVERSITY

DOI:

https://doi.org/10.71336/jabs.1560

Keywords:

Stenotrophomonas maltophilia, green synthesis, AgNP, antimicrobial, photocatalytic, cytotoxicity

Abstract

Biogenic AgNP production at room temperature (20 ± 2 °C) and 37 °C were investigated using Stenotrophomonas maltophilia. Transmission electron microscopy showed average particle sizes of 9.1 ± 2.6 nm at room temperature and 6.8 ± 1.8 nm at 37 °C. ATR-FTIR analysis indicated that the nanoparticles were associated with biomolecules, mainly proteins and lipids, suggesting a role in stabilization. The synthesized AgNPs exhibited antibacterial activity against Staphylococcus aureus ATCC 29213 (17 ± 0.2 mm inhibition zone) and 84% antibiofilm activity against Pseudomonas aeruginosa. Photocatalytic results showed 57% removal of methylene blue within 20 minutes. Cytotoxicity assays revealed a dose-dependent response, with the strongest effect in A549 cells (IC₅₀: 6.54 µg/mL). All experiments were performed in at least biological triplicates, and statistical significance was evaluated where applicable (p < 0.05). These findings highlight the multifunctional nature of biogenic AgNPs and support their relevance for antimicrobial and environmental applications within the scope of in vitro conditions.

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Published

2026-05-31

How to Cite

Erkoç, E., Taliboğlu, S., Korkmaz, F., Eskizengin, H., Kıran, F., & Koçberber Kılıç, N. (2026). Temperature-Dependent Biosynthesis and Comparative Characterization of Silver Nanoparticles by Stenotrophomonas maltophilia With Multifunctional Activities . Journal of Applied Biological Sciences, 20(2), 55–68. https://doi.org/10.71336/jabs.1560

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