Quasi-Diamond Platelet-Shaped Zinc Oxide Nanostructures Display Enhanced Antibacterial Activity.

Autor: Araiza-Campos A; Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico., Herrera-Pérez G; CONAHCYT, Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico., Salas-Leiva JS; CONAHCYT, Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico., Chávez-Beltrán de Río M; Ingeniería en Biotecnología, Instituto Tecnológico y de Estudios Superiores de Monterrey, Av. Heroico Colegio Militar 4700, Nombre de Dios., 31300, Chihuahua, México., Aguirre-Hernández A; Ingeniería en Biotecnología, Instituto Tecnológico y de Estudios Superiores de Monterrey, Av. Heroico Colegio Militar 4700, Nombre de Dios., 31300, Chihuahua, México., Luna-Velasco A; Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico., Salas-Leiva D; Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom., Campos-Chávez E; Department of Molecular Biosciences, Northwestern University, Evanston, IL, 60208, USA., Tovar-Ramírez D; Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Instituto Politécnico Nacional s/n, Playa Palo de Santa Rita Sur, 23096, La Paz, B.C.S, Mexico., Romo-Chacón A; Centro de Investigación en Alimentación y Desarrollo, A.C., (CIAD) Campus Cuauhtémoc, Chihuahua, Avenida Rio Conchos S/N, Parque Industrial, 31570, Cuauhtémoc, Mexico., Orrantia-Borunda E; Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico., Paraguay-Delgado F; Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico.
Jazyk: angličtina
Zdroj: Chembiochem : a European journal of chemical biology [Chembiochem] 2023 Nov 16; Vol. 24 (22), pp. e202300542. Date of Electronic Publication: 2023 Oct 04.
DOI: 10.1002/cbic.202300542
Abstrakt: The current study compares the antibacterial activity of zinc oxide nanostructures (neZnO). For this purpose, two bacterial strains, Escherichia coli (ATCC 4157) and Staphylococcus aureus (ATCC 29213) were challenged in room light conditions with the aforementioned materials. Colloidal and hydrothermal methods were used to obtain the quasi-round and quasi-diamond platelet-shape nanostructures. Thus, the oxygen vacancy (V O ) effects on the surface of neZnO are also considered to assess its effects on antibacterial activity. The neZnO characterization was achieved by X-ray diffraction (XRD), a selected area electron diffraction (SAED) and Raman spectroscopy. The microstructural effects were monitored by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Furthermore, optical absorption ultraviolet visible spectrophotometry (UV-Vis) and X-ray photoelectron spectroscopy (XPS) analyses complement the physical characterization of these nanostructures; neZnO caused 50 % inhibition (IC 50 ) at concentrations from 0.064 to 0.072 mg/mL for S. aureus and from 0.083 to 0.104 mg/mL for E. coli, indicating an increase in activity against S. aureus compared to E. coli. Consequently, quasi-diamond platelet-shaped nanostructures (average particle size of 377.6±10 nm) showed enhanced antibacterial activity compared to quasi-round agglomerated particles (average size of 442.8±12 nm), regardless of Vo presence or absence.
(© 2023 Wiley-VCH GmbH.)
Databáze: MEDLINE
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