Combined Effect of Ultrasound Stimulations and Autoclaving on the Enhancement of Antibacterial Activity of ZnO and SiO₂/ZnO Nanoparticles

Nanomaterials
Hajer RokbaniAbdellah Ajji

Abstract

This study investigates the antibacterial activity (ABA) of suspensions of pure ZnO nanoparticles (ZnO-NPs) and mesoporous silica doped with ZnO (ZnO-UVM7), as well as electrospun nanofibers containing those nanoparticles. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of these two materials were also determined under the same conditions. The results showed a concentration-dependent effect of antibacterial nanoparticles on the viability ofEscherichia coli(E. coli). Moreover, the combination of the stimulations and sterilization considerably enhanced the antimicrobial activity (AMA) of the ZnO suspensions. Poly (lactic acid) (PLA) solutions in 2,2,2-trifluoroethanol (TFE) were mixed with different contents of nanoparticles and spun into nonwoven mats by the electrospinning process. The morphology of the mats was analyzed by scanning electron microscopy (SEM). The amount of nanoparticles contained in the mats was determined by thermogravimetric analysis (TGA). The obtained PLA-based mats showed a fibrous morphology, with an average diameter ranging from 350 to 450 nm, a porosity above 85%, but with the nanoparticles agglomeration on their surface. TGA analysis showed that the loss of ZnO-N...Continue Reading

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Citations

Feb 23, 2019·Materials·Alexandra Muñoz-BonillaMarta Fernández-García
Jan 7, 2020·Annual Review of Food Science and Technology·Lei Mei, Qin Wang
Jun 9, 2018·Nanomaterials·Ana María Díez-Pascual
Oct 17, 2018·Nanomaterials·Yukun HuangQin Wang
Feb 13, 2021·Nanomaterials·Vitalij NovickijElena Servienė
Feb 28, 2021·Environmental Science and Pollution Research International·Junzhi SunYongqiang Wang
Mar 17, 2021·Critical Reviews in Food Science and Nutrition·Dur E SameenYaowen Liu
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mehrajfatema Zafar MullaShivani Pathania
May 1, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sergio A Bernal-ChávezGerardo Leyva-Gómez

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