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- Title
A Time-Course Study on a Food Contact Material (FCM)-Certified Coating Based on Titanium Oxide Deposited onto Aluminum.
- Authors
Di Cerbo, Alessandro; Mescola, Andrea; Rosace, Giuseppe; Trovato, Valentina; Canton, Roberto; Iseppi, Ramona; Stocchi, Roberta; Ghazanfar, Shakira; Rea, Stefano; Loschi, Anna Rita; Sabia, Carla
- Abstract
Simple Summary: In this study, we confirm the bactericidal effect of a special anodizing method, based on TiO2 nanoparticles (DURALTI®) deposited on aluminum disks with different roughness and subjected to two sanitizing treatments, and, consequently, performing a time-course evaluation against both Gram-negative and Gram-positive bacteria. DURALTI® coating already confirmed its ability to induce a 4-logarithmic decrease (from 106 to 102 CFU/mL) after 6 h. Once each sanitizing treatment was applied, an overall bacterial inhibition occurred in a time ranging from 15′′ to 1′. Aluminum is the second most widely used metal worldwide. It is present as an additive in cosmetics, pharmaceuticals, food, and food contact materials (FCM). In this study, we confirm the bactericidal effect of a special anodizing method, based on TiO2 nanoparticles (DURALTI®) deposited on aluminum disks with different roughness and subjected to two sanitizing treatments: UV and alcohol 70%. Consequently, we perform a time-course evaluation against both Gram-negative and Gram-positive bacteria to better frame the time required to achieve the best result. Approximately 106 CFU/mL of Escherichia coli ATCC 25922; Salmonella Typhimurium ATCC 1402; Yersinia enterocolitica ATCC 9610; Pseudomonas aeruginosa ATCC 27588; Staphylococcus aureus ATCC 6538; Enterococcus faecalis ATCC 29212; Bacillus cereus ATCC 14579 and Listeria monocytogenes NCTT 10888 were inoculated onto each aluminum surface and challenged with UV and alcohol 70% at 0, 15", 30", 1′, 5′, 15′, 30′, 1, 2, 4 and 6 h. DURALTI® coating already confirmed its ability to induce a 4-logarithmic decrease (from 106 to 102 CFU/mL) after 6 h. Once each sanitizing treatment was applied, an overall bacterial inhibition occurred in a time ranging from 15′′ to 1′. The results are innovative in terms of preventing microbial adhesion and growth in the food industry.
- Subjects
ALUMINUM ores; TITANIUM oxides; GRAM-positive bacteria; GRAM-negative bacteria; YERSINIA enterocolitica; ESCHERICHIA coli O157:H7
- Publication
Biology (2079-7737), 2022, Vol 11, Issue 1, p97
- ISSN
2079-7737
- Publication type
Article
- DOI
10.3390/biology11010097