Durability Assessment of a Plasma-Polymerized Coating with Anti-Biofilm Activity against L. monocytogenes Subjected to Repeated Sanitization
| Autor: | Montserrat González-Raurich, Márcia Oliveira, Rodolfo Múgica-Vidal, María López, Paula Fernández-Gómez, Ignacio Muro-Fraguas, Fernando Alba-Elías, Ana Sainz-García, Beatriz Rojo-Bezares, Elisa Sainz-García, Mercedes Fuertes López |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Health (social science)
Carboxylic acid plasma polymerization TP1-1185 Plant Science engineering.material Health Professions (miscellaneous) Microbiology Article chemistry.chemical_compound Coating food contact Peracetic acid sanitization anti-biofilm Acrylic acid chemistry.chemical_classification Chemical technology Biofilm Plasma polymerization chemistry Sodium hypochlorite Triethoxysilane engineering durability disinfectants Food Science Nuclear chemistry |
| Zdroj: | Foods Volume 10 Issue 11 RIUR. Repositorio Institucional de la Universidad de La Rioja instname Foods, Vol 10, Iss 2849, p 2849 (2021) |
| ISSN: | 2304-8158 |
| DOI: | 10.3390/foods10112849 |
| Popis: | Biofilm formation on food-contact surfaces is a matter of major concern causing food safety and spoilage issues to this sector. The aim of this study was to assess the durability of the anti-biofilm capacity of a plasma-polymerized coating composed of a base coating of (3-aminopropyl)triethoxysilane (APTES) and a functional coating of acrylic acid (AcAc). Coated and uncoated AISI 316 stainless steel (SS) plates were subjected to five sanitization cycles with sodium hypochlorite (0.05%) and peracetic acid (0.5%). The effectiveness of the coating for the inhibition of multi-strain Listeria monocytogenes biofilm formation was confirmed using a three-strain cocktail, which was grown on the SS plates at 12 °C for 6 days. Compared to the uncoated SS, relative biofilm productions of 14.6% on the non-sanitized coating, 27.9% on the coating after sanitization with sodium hypochlorite, and 82.3% on the coating after sanitization with peracetic acid were obtained. Morphological and physicochemical characterization of the coatings suggested that the greater anti-biofilm effectiveness after sanitization with sodium hypochlorite was due to the high pH of this solution, which caused a deprotonation of the carboxylic acid groups of the functional coating. This fact conferred it a strong hydrophilicity and negatively charged its surface, which was favorable for preventing bacterial attachment and biofilm formation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|