Antimicrobial Effect on Pathogenic Microorganisms and Physicochemical Characterization of Zn-MgO Nanocomposites
DOI:
https://doi.org/10.29356/jmcs.v70i1.2475Keywords:
ZnO-MgO Nanocomposites, microwave synthesis, antimicrobial activityAbstract
Abstract. Zn-MgO nanocomposites have attracted interest due to their antimicrobial potential against pathogens. The antimicrobial activity of ZnO/MgO mixed oxides with different ratios (1 %, 3 %, 5 % w/w) was evaluated against Escherichia coli, Enterococcus faecalis, Staphylococcus aureus, Salmonella paratyphi A, and Listeria monocytogenes. The nanomaterials were synthesized using the microwave method and characterized by FT-IR, XRD, and SEM, confirming the presence of Zn-O and Mg-O bonds, particle sizes ranging from 20 to 42 nm, and cubic/semiglobular morphologies. The results revealed that the addition of MgO influences the particle size and the MgO ratio used, with 1 % ZM being the most effective treatment. This study contributes to the development of new antimicrobial agents to combat the growing bacterial resistance.
Resumen. Los nanocompuestos de Zn-MgO han despertado interés por su potencial antimicrobiano contra patógenos. Se evaluó la actividad antimicrobiana de óxidos mixtos de ZnO/MgO con diferentes relaciones (1 %, 3 %, 5 % w/w) sobre Escherichia coli, Enterococcus faecalis, Staphylococcus aureus, Salmonella paratyphi A y Listeria monocytogenes. Los nanomateriales fueron sintetizados mediante el método de microondas y caracterizados por FT-IR, DRX y SEM, confirmando la presencia de enlaces Zn-O y Mg-O, tamaños de partícula entre 20-42 nm y morfologías cúbicas/semiglobulares. Los resultados revelaron que la adición de MgO influye en el tamaño de partícula y la relación de MgO utilizada, siendo el mejor tratamiento ZM 1 %. Este estudio contribuye al desarrollo de nuevos agentes antimicrobianos para combatir la creciente resistencia bacteriana.
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