Effects of aluminium oxide nanoparticles on bacterial growth

Doskocz, Nina; Affek, Katarzyna; Załęska-Radziwiłł, Monika

doi:10.1051/e3sconf/20171700019

Cited by 29 publications

(15 citation statements)

References 24 publications

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“…This observation allowed us to speculate a possible bactericidal effect of the anodizing based on titanium oxide, which mainly make up the DURALTI ® surface treatment. Such effect became significant once applied all sanitizing agents, thus supposing a synergistic activity characterized by a photocatalytic reaction of both oxides (aluminum and titanium) under UV radiation, as was also demonstrated by different literature reports [66][67][68][69]. The similar bactericidal effects observed after alcohol treatment might be ascribed to a synergistic effect of the friction with the sterile spatula and titanium oxide [66,70] within the DURALTI ® coating.…”

Section: Discussionsupporting

confidence: 61%

Antibacterial Effect of Aluminum Surfaces Untreated and Treated with a Special Anodizing Based on Titanium Oxide Approved for Food Contact

Cerbo

Mescola

Iseppi

et al. 2020

Biology

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One of the main concerns of the food industry is microbial adhesion to food contact surfaces and consequent contamination. We evaluated the potential bacteriostatic/bactericidal efficacy of aluminum surfaces with different large-scale roughness (0.25, 0.5 and 1 μm) before and after the surface treatment with a special anodizing based on titanium oxide nanotechnology (DURALTI®) and after 3 different sanitizing treatments, e.g., UV, alcohol and a natural product named Gold lotion. Four Gram-negative (Escherichia coli ATCC 25922, Salmonella typhimurium ATCC 1402, Yersinia enterocolitica ATCC 9610 and Pseudomonas aeruginosa ATCC 27588) and four Gram-positive (Staphylococcus aureus ATCC 6538, Enterococcus faecalis ATCC 29212, Bacillus cereus ATCC 14579 and Listeria monocytogenes NCTT 10888) bacteria were screened. As far as concerns aluminum surfaces without nanotechnology surface treatment, an overall bacteriostatic effect was observed for all strains with respect to the initial inoculum that was 106 CFU/mL. Conversely, an overall bactericidal effect was observed both for Gram-negative and -positive bacteria on DURALTI®-treated aluminum disks, regardless of roughness and sanitizing treatment. These results are innovative in terms of the great potential of the antibacterial activity of nanotechnologically treated food contact surfaces and their combination with some sanitizing agents that might be exploited in the food industry.

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Section: Discussionsupporting

confidence: 61%

Antibacterial Effect of Aluminum Surfaces Untreated and Treated with a Special Anodizing Based on Titanium Oxide Approved for Food Contact

Cerbo

Mescola

Iseppi

et al. 2020

Biology

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“…The number of listeria cells decreased more from aluminum than stainless steel surfaces, which could be explained by aluminum oxide (Al 2 O 3 ) formation on the surface of aluminum. Al 2 O 3 has been found to inhibit bacterial growth ( Doskocz et al, 2017 ; Sikora et al, 2018 ), although in this study the antibacterial effect of Al 2 O 3 is not visible at time point 0 h, since the initial attachment of listeria cells is similar between stainless steel and aluminum ( Tables 1 and 2 ). The combined effect of Al 2 O 3 and nanomaterial could be the reason for the complete inactivation of listeria from the TiO 2 -coated aluminum plate after 72-h illumination.…”

Section: Discussioncontrasting

confidence: 57%

Antibiofilm Effects of Nanoparticles and Visible Light Illumination Against Listeria monocytogenes

2021

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Listeria monocytogenes bacteria pose a particular risk to the food industry as the species is known to form biofilm and to survive in a wide range of challenging environmental conditions. L. monocytogenes can cause listeriosis, a serious food-borne disease, and effective and safe antibiofilm materials and sanitary methods for food processing environments are intensively sought. A variety of nanoparticle materials have been recognized as safe to use in food environments, which allows the application of nanomaterials also for food safety purposes. Nanoparticles together with light illumination generate reactive oxygen species which inactivate bacteria by breaking down cell membranes, proteins, and DNA. The main objective of this study was to evaluate the efficacy of nanomaterials and blue light illumination for L. monocytogenes ATCC 7644 biofilm inactivation. Biofilm was allowed to form for 72 h on nanocoated stainless steel and aluminum plates, after which the plates were illuminated. Non-coated control plates were used to evaluate the antibiofilm efficacy of nanocoating. Plate count method was used to evaluate bacteria counts after illumination. Nanocoating did not affect initial biofilm formation compared to the control plates. Biofilm was significantly (p < 0.05) reduced on stainless steel, aluminum, and TiO2-coated aluminum plates after 72-h illumination by 1.9, 3.2, and 5.9 log, respectively. Nanocoating with visible light illumination could be an effective and safe method for enhancing food safety in food processing facilities to control biofilm formation. Evidence of antibiofilm properties of nanomaterials together with visible light illumination is limited; hence, future studies with variable light intensities and nanomaterials are needed.

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“…Several studies reported about a moderate bacteriostatic effect of aluminum oxide nanoparticles at a concentration of 1 mg/mL and a size of 180 nm against E. coli [ 49 , 50 ]. A 40% decrease in the growth rate of P. putida bacterial cultures upon AlOxNP addition was observed compared to the application of non-nanosized Al 2 O 3 [ 51 ]. It is also important to note that several studies reported about the inhibitory effect against multiresistant Gram-negative and Gram-positive bacteria as well as clinical strains.…”

Section: Literature Reviewmentioning

confidence: 99%

A Mini Review of Antibacterial Properties of Al2O3 Nanoparticles

et al. 2022

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Bacterial antibiotic resistance is one of the most serious modern biomedical problems that prioritizes the search for new agents to combat bacterial pathogens. It is known that nanoparticles of many metals and metal oxides can have an antibacterial effect. However, the antibacterial efficacy of aluminum oxide nanoparticles has been studied little compared to the well-known antimicrobial properties of nanoparticles of oxides of metals such as zinc, silver, iron, and copper. In this review, we have focused on the experimental studies accumulated to date demonstrating the antibacterial effect of aluminum oxide nanoparticles. The review discusses the main ways of synthesis and modification of these nanoparticles, provides the proposed mechanisms of their antibacterial action against gram-positive and gram-negative bacteria, and also compares the antibacterial efficacy depending on morphological characteristics. We have also partially considered the activity of aluminum oxide nanoparticles against water microalgae and fungi. In general, a more detailed study of the antibacterial properties of aluminum oxide nanoparticles is of great interest due to their low toxicity to eukaryotic cells.

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Effects of aluminium oxide nanoparticles on bacterial growth

Cited by 29 publications

References 24 publications

Antibacterial Effect of Aluminum Surfaces Untreated and Treated with a Special Anodizing Based on Titanium Oxide Approved for Food Contact

Antibacterial Effect of Aluminum Surfaces Untreated and Treated with a Special Anodizing Based on Titanium Oxide Approved for Food Contact

Antibiofilm Effects of Nanoparticles and Visible Light Illumination Against Listeria monocytogenes

A Mini Review of Antibacterial Properties of Al2O3 Nanoparticles

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