Value-Added of Sweet Orange Peel Waste into TiO2 Nanoparticles via Green Synthesis for Antibacterial Applications
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Abstract
This research focuses on the TiO2 nanoparticles synthesized via a green chemistry approach using extracts from sweet orange, (Citrus sinensis) peels. The quality of the synthesized titanium dioxide nanoparticles was enhanced through an annealing process at 350°C for 6 hours. It was found that this thermal treatment significantly improved the particle quality. The antibacterial activity of the nanoparticles was investigated at concentrations of 0.1, 0.3, and 0.5 mg/mL in deionized water using the disc diffusion technique against both Gram-positive and Gram-negative bacteria. Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) were used as representative strains for Gram-positive and Gram-negative bacteria, respectively. The results indicated that the TiO2 at a concentration of 0.5 mg/mL exhibited the most effective antibacterial performance against both types of bacteria.
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