ArticleApplied microbiology and biotechnology2026
Evaluation of the biological activities of Bacillus cereus-synthesized titanium dioxide nanoparticles.
Article in Applied microbiology and biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The emergence of multidrug-resistant pathogens and the growing burden of cancer worldwide demand novel therapeutic approaches. This study evaluated the biological activities of green-synthesized titanium dioxide nanoparticles (TiO₂ NPs) using Bacillus cereus cell-free supernatant and titanium tetra-isopropoxide precursor. Nanoparticles were analyzed and standard methods were employed to evaluate the antimicrobial, antibiofilm, and cell cytotoxicity. UV-Vis spectroscopy confirmed the synthesis of TiO₂ NPs with a characteristic peak at 360 nm. Transmission electron microscopy (TEM) revealed roughly spherical particles (8.8 ± 3 nm diameter). A Z-average hydrodynamic diameter of 328.1 nm (PDI, 0.439) was revealed by dynamic light scattering (DLS). According to the energy-dispersive X-ray spectroscopy (EDX) results, oxygen was 42.39% and titanium was 45.93%. The X-ray diffraction (XRD) measurement confirmed a crystalline anatase structure, with a prominent peak at 25.3° 2θ. Fourier transform infrared (FTIR) detected the characteristic Ti-O-Ti and vibrational band at 403.31 cm⁻
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