Browsing by Author "TAHRAOUI Tarek (Co-Auteur)"

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    Coprecipitation Synthesis and Antimicrobial Effect Study of Europium Doped Spinel Manganese Ferrites Nanoparticles (MnEu0.1Fe1.9O4NPs)
    (Science and Technology Indonesia, 2023-07) TAHRAOUI Tarek (Co-Auteur)
    Due to the high prevalence of micro-organisms resistant to conventional antimicrobials, the search for new antimicrobial drugs is underway, with nanoparticles being one of the options. This study reports for the first time the use of the precipitation method to synthesize europium (Eu) doped spinel manganese ferrites nanoparticles (MnEu0.1Fe1.9O4NPs). The purpose of this research is to determine the antimicrobial activity of MnEu0.1Fe1.9O4NPs. MnEu0.1Fe1.9O4NPs were analyzed using Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), and Scanning Electron Microscopy (SEM) combined with Energy Dispersive X-Ray Analysis (EDX) to determine their structure, size, morphology and elemental compositions. The antimicrobial activity of synthesized nanoparticles was evaluated qualitatively using a diffusion disc on agar, followed by minimum inhibitory concentrations (MIC) determination. The findings show that all tested strains were adversely affected by the examined NPs, where E. coli exhibited the highest sensitivity to NPs, followed by S. aureus. The NPs displayed a moderate level of anti-candida action. MnEu0.1Fe1.9O4NPs could be exploited in biomedical usages.
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    Manufactured Yttrium Barium Copper Nano Oxide for Medicinal Applications
    (The Journal of Engineering and Exact Sciences, 2023) DAHA Rania; TAHRAOUI Tarek (Co-Auteur)
    In light of the considerable interest surrounding the antibacterial properties of nanometal oxides and high-temperature superconductors, this study focuses on the synthesis of YBa2Cu3O7 (YBCO) using the Sol-Gel method. The research delves into the experimental aspects of nanoparticle (NP) synthesis and aims to elucidate the antibacterial potential of YBCO NPs, a high-temperature superconductor, against four distinct bacteria. These bacteria were subjected to varying concentrations of YBCO NPs (0.01 mg/ml, 0.025 mg/ml, 0.05 mg/ml, and 0.1 mg/ml). Comprehensive characterization of the synthesized nanoparticles encompassed techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and thermogravimetric (TG) analysis. Remarkably, the Gram-positive strains, including Staphylococcus epidermidis and Methicillin-resistant Staphylococcus aureus (MRSA), exhibited pronounced susceptibility to the YBCO NPs, while Gram-negative strains displayed minimal response. Intriguingly, even at elevated concentrations of 0.01, 0.025, 0.05, and 0.1 mg/ml, these bacterial strains showcased resilient resistance. This research sheds light on the potential of YBCO NPs as an antibacterial agent against specific pathogens