Bactericidal efficiency of UVA-active titanium dioxide thin layers on bacteria from food industry environments
| Autor: | Xavier Castel, Perrine Raymond, Marion Barthomeuf, Martine Denis, Laurent Le Gendre, Christine Pissavin, Nyedna Policarpo |
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| Přispěvatelé: | Département Génie Biologique / IUT de Saint-Brieuc, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), European Regional Development Fund (ERDF), Ministry of Higher Education and Research, STIC, Région Bretagne, Département des Côtes d’Armor and Saint-Brieuc Armor Agglomération, IUT de Saint-Brieuc, Université de Rennes (UR), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Nantes Université (NU)-Université de Rennes 1 (UR1) |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Anatase Materials science 030106 microbiology 02 engineering and technology [SPI.MAT]Engineering Sciences [physics]/Materials 03 medical and health sciences chemistry.chemical_compound General Materials Science ComputingMilieux_MISCELLANEOUS Thin layers biology Mechanical Engineering Environmental engineering Biofilm 021001 nanoscience & nanotechnology Condensed Matter Physics biology.organism_classification [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology chemistry Chemical engineering Mechanics of Materials Titanium dioxide Photocatalysis 0210 nano-technology [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition Layer (electronics) Bacteria Methylene blue |
| Zdroj: | Materials Technology: Advanced Performance Materials Materials Technology: Advanced Performance Materials, Taylor & Francis 2017, 32 (13), pp.782-791. ⟨10.1080/10667857.2017.1363143⟩ Materials Technology: Advanced Performance Materials, 2017, 32 (13), pp.782-791. ⟨10.1080/10667857.2017.1363143⟩ |
| ISSN: | 1753-5557 1066-7857 |
| DOI: | 10.1080/10667857.2017.1363143 |
| Popis: | Titanium dioxide (TiO2) thin layers have been deposited on glass substrates using radio frequency magnetron sputtering technique. The photocatalytic activity of the TiO2 thin layers has been investigated by a methylene blue discolouration test and reveals that films with an anatase structure present the highest performance. Bactericidal activity of the anatase-phase TiO2 layer against food-borne bacteria has then been tested by enumeration of the adherent cells, after adhesion and a subsequent UVA illumination. A decrease of the adherent bacteria number equal to −1.2, −2.6 and −2.3 log is reached for Y. enterocolitica, L. monocytogenes and P. fragi, respectively. SEM observations exhibit bacterial cells with damaged walls for all bacteria. Applied on materials present in the food plants, these TiO2 thin layers may be an effective way for the hygienic conception of the equipment to reduce the biofilm formation and thus, to ensure food safety. |
| Databáze: | OpenAIRE |
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