scholarly journals Precise engineering of ultrasound-mediated cerium oxide nanoparticles: Investigations on antioxidant, antibacterial activity and human osteomyelitis

2021 ◽  
Author(s):  
Xiusong Dai ◽  
Xiaopan Wang ◽  
Xiaotian Chen ◽  
Longfei Ye ◽  
Min Wu
Keyword(s):  
Antibacterial Activity ◽  
Band Gap ◽  
Cerium Oxide ◽  
Foodborne Pathogens ◽  
Average Particle Size ◽  
Precipitation Method ◽  
Cerium Oxide Nanoparticles ◽  
Growth Media ◽  
Oxide Nanoparticles ◽  
Average Particle

Abstract In this study, the antibacterial activity of cerium oxide nanoparticles on two Gram-negative and three Gram-positive foodborne pathogens was investigated. CeO2 nanoparticles (CeO2 NPs) were synthesized by a Wet Chemical Synthesis route, using the precipitation method and the Simultaneous Addition of reactants (WCS–SimAdd). The as-obtained precursor powders were investigated by thermal analysis (TG–DTA), to study their decomposition process and to understand the CeO2 NPs formation. The composition, structure, and morphology of the thermally treated sample were investigated by FTIR, Raman spectroscopy, X-ray diffraction, TEM, and DLS. The cubic structure and average particle size ranging between 5 and 15 nm were evidenced. Optical absorption measurements (UV–Vis) reveal that the band gap of CeO2 NPs is 2.61 eV, which is smaller than the band gap of bulk ceria. The antioxidant effect of CeO2 NPs was determined, and the antibacterial test was carried out both in liquid and on solid growth media against five pathogenic microorganisms, namely Escherichia coli, Salmonella typhimurium, Listeria monocytogenes, Staphylococcus aureus, and Bacillus cereus. Cerium oxide nanoparticles showed growth inhibition toward all five pathogens tested with notable results. This paper highlights the CeO2 NPs showed antibacterial activity with significant variations due to the differences in the membrane structure and cell wall composition among the two groups tested. Consequently, synthesized CeO2 NPs can be potential candidates for the treatment of osteomyelitis.

scholarly journals Cerium Oxide Nanoparticles and Their Efficient Antibacterial Application In Vitro against Gram-Positive and Gram-Negative Pathogens

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1614
Author(s):  
Oana L. Pop ◽  
Amalia Mesaros ◽  
Dan C. Vodnar ◽  
Ramona Suharoschi ◽  
Flaviu Tăbăran ◽  
...  
Keyword(s):  
Band Gap ◽  
Cerium Oxide ◽  
Average Particle Size ◽  
Antibacterial Properties ◽  
Cerium Oxide Nanoparticles ◽  
Growth Media ◽  
Oxide Nanoparticles ◽  
Average Particle ◽  
Gram Positive ◽  
Gram Negative

In this study, the antibacterial activity of cerium oxide nanoparticles on two Gram-negative and three Gram-positive foodborne pathogens was investigated. CeO2 nanoparticles (CeO2 nps) were synthesized by a Wet Chemical Synthesis route, using the precipitation method and the Simultaneous Addition of reactants (WCS–SimAdd). The as-obtained precursor powders were investigated by thermal analysis (TG–DTA), to study their decomposition process and to understand the CeO2 nps formation. The composition, structure, and morphology of the thermally treated sample were investigated by FTIR, Raman spectroscopy, X-ray diffraction, TEM, and DLS. The cubic structure and average particle size ranging between 5 and 15 nm were evidenced. Optical absorption measurements (UV–Vis) reveal that the band gap of CeO2 is 2.61 eV, which is smaller than the band gap of bulk ceria. The antioxidant effect of CeO2 nps was determined, and the antibacterial test was carried out both in liquid and on solid growth media against five pathogenic microorganisms, namely Escherichia coli, Salmonella typhimurium, Listeria monocytogenes, Staphylococcus aureus, and Bacillus cereus. Cerium oxide nanoparticles showed growth inhibition toward all five pathogens tested with notable results. This paper highlights the perspectives for the synthesis of CeO2 nps with controlled structural and morphological characteristics and enhanced antibacterial properties, using a versatile and low-cost chemical solution method.

scholarly journals Cerium Oxide Nanoparticles Improve Lifespan of Stored Blood

2020 ◽  
Vol 185 (Supplement_1) ◽  
pp. 103-109
Author(s):  
Beverly A Rzigalinski ◽  
Holly M Giovinco ◽  
Byron J Cheatham
Keyword(s):  
Oxidative Stress ◽  
Cerium Oxide ◽  
Whole Blood ◽  
Average Particle Size ◽  
Oxygen Storage ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Average Particle ◽  
Stored Blood

ABSTRACT Introduction Blood is a precious commodity, with storage limited to 42 days under refrigeration. Degradative changes in red blood cells (RBCs) begin as early as 11–21 days after collection, and compromise their function. Materials that extend the life of RBCs will improve blood utilization in the field, as well as in hospital settings. Cerium oxide nanoparticles (CeONPs) are widely used in the materials industry to counteract oxidative stress and improve oxygen storage. We have previously shown that CeONPs extended the lifespan of cells in culture and counteract oxidative stress in vitro and in vivo. Here, we test the hypothesis that CeONPs extend the lifespan of RBCs in whole stored blood. Materials and Methods Rat whole blood was collected with sodium citrate and stored at 4°C. Groups consisted of control (no CeONPs), and 10 and 100 nM CeONPs (average particle size 10 nm) added. Aliquots of stored blood were removed weekly and analyzed for different blood parameters. Results Results demonstrate that CeONPs improve storage and functional lifespan of RBCs in stored whole blood. Conclusions This work suggests that CeONPs may be a promising additive for extending storage and function of blood and blood products.

Evaluation of antibacterial activity and anticorrosive inhibition behaviour of copper doped cerium oxide nanoparticles (Cu-CeO2 NPs)

2022 ◽  
Author(s):  
R. ChithraDevi ◽  
S. Surendhiran ◽  
A. Balamurugan ◽  
P. Bhoopathy ◽  
K. Kandasamy ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Cerium Oxide ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles

scholarly journals Antibacterial Activity of Polymer Coated Cerium Oxide Nanoparticles

PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e47827 ◽  
Author(s):  
Vishal Shah ◽  
Shreya Shah ◽  
Hirsh Shah ◽  
Fred J. Rispoli ◽  
Kevin T. McDonnell ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Cerium Oxide ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles

Optical, surface analysis and antibacterial activity of ZnO–CuO doped cerium oxide nanoparticles

Optik ◽  
2015 ◽  
Vol 126 (24) ◽  
pp. 5830-5835 ◽  
Author(s):  
E. Gopinathan ◽  
G. Viruthagiri ◽  
N. Shanmugam ◽  
S. Sathiya priya
Keyword(s):  
Antibacterial Activity ◽  
Cerium Oxide ◽  
Surface Analysis ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Optical Surface

Synthesis, characterization and antibacterial activities of calcium oxide nanoparticles by precipitation method

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Gowthami R ◽  
Keerthana G
Keyword(s):  
Antibacterial Activity ◽  
Band Gap ◽  
Calcium Oxide ◽  
Antibacterial Activities ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
Vis Spectroscopy

The UV- Vis spectroscopy determines the band gap of calcium oxide nanoparticles and also the calcium oxide nanoparticles shows excellent antibacterial activity due to its degradation property.

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