| This study aimed to synthesize new iron nanoparticles (FeNPs) using Beta Vulgaris (beet) extract as a reducing agent and test its bioactivity against Pseudomonas aeruginosa. In total, five grams of beet were ground and dissolved in 50 ml of distilled water and filtered with filter paper. The filtrate was then isolated. Different concentrations, including 25%, 50%, 100%, and 150% of the isolated filtrated substances were prepared from the stock solution. FeNPs were prepared from 0.5 moles of iron nitrate salt (Fe(NO3)3.9H2O which was mixed with the aqueous solution of beet extract. Moreover, two aqueous solutions were mixed thoroughly with continuous stirring at 60°C. The FeNPs were isolated, separated, identified, and characterized using different physicochemical techniques (i.e., X-Ray Diffraction, Ultraviolet-visible Spectroscopy, and Atomic Force Microscope). Subsequently, the bioactivity of the NPs against P. aeruginosa was tested. The Vitek antibiotic test for P. aeruginosa showed resistant activity against Piperacillin/Tazobactam, Cefazolin, Ceftazidime, Cefepime, Imipenem, Cefepime, Ceftazidime, Cefazolin, and Piperacillin/Tazobactam; in addition, it revealed high sensitivity toward Tobramycin, Levofloxacin, Trimethoprim, Gentamicin, Nitrofurantoin, and Ciprofloxacin. The FeNPs at 50% concentration showed the best inhibition activity against P. aeruginosa. In the current study, novel FeNPs were synthesized which showed activity toward P. aeruginosa that could be used to replace certain antibiotics as a green medicine. |
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