Elahe Tahmasebi, Mehdi Mohammadi, Mohsen Yazdanian, Mostafa Alam, Kamyar Abbasi, Hamideh Mahmoodzadeh Hosseini, Maryam Tavakolizadeh, Danial Khayatan, Zahra Hassani, Hamid Tebyaniyan

Antimicrobial properties of green synthesized novel TiO2 nanoparticles using Iranian propolis extracts

  • Applied Microbiology and Biotechnology
  • General Medicine
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AbstractThe oral antimicrobial and cytotoxic properties of green synthesized novel titanium dioxide nanoparticles (TiO2 NPs) using Iranian propolis extracts were investigated on oral bacteria and fibroblast cells. In this study, propolis was sampled, and alcoholic extracts were prepared. The TiO2 NPs were biosynthesized using propolis extracts. The synthesized TiO2 NPs were characterized by scanning electron microscope (SEM), X‐ray diffraction analysis, energy‐dispersive X‐ray (EDX), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering, ultraviolet–visible (UV–Vis), transmission electron microscope, Brunauer–Emmett–Teller, and zeta potential. MTT (3‐[4,5‐dimethylthiazol‐2‐yl]‐2,5 diphenyl tetrazolium bromide), minimal inhibitory concentration, minimum bactericidal concentration, minimum fungicidal concentration, biofilm formation, and degradation tests were studied to clarify the oral antimicrobial properties of green synthesized TiO2 NPs. According to the FTIR analysis, the propolis extract contained flavonoids and phenolic compounds in addition to TiO2 NPs. Additionally, UV‐Vis revealed that intense bands had formed NPs. EDX spectra and SEM images revealed that the stabilizing agent was in perfect quasi‐spherical shapes around 21 nm. An EDX spectrum was used to verify the presence of titanium and oxygen. There were no significant cytotoxicity effects. The antibacterial results showed that Pro1TiO2 (Khalkhal sample) had better effects than Pro2TiO2 (Gilan sample) and TiO2 NPs. The present study presents a new process for synthesizing TiO2 NPs from propolis extracts with less toxic effects and user‐friendly, eco‐friendly, and economical materials. Pro1TiO2 NPs may be considered the best candidate for clinical application.

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