Abstract
In this study, we investigated the adaptation of selected Pseudomonas spp. to QACs and monitored the changes in susceptibility to these compounds after serial exposure to QACs. Additional study was performed on the QACs efficacy on cells on different types of surfaces and the data were correlated to surface properties. Results showed that wild type Pseudomonas fluorescens and Pseudomonas fragi exhibited more susceptibility to QACs in comparison with Pseudomonas putida. In addition, the investigations carried out on the adhesion of both wild and adapted strains to different types of surface materials using thermodynamic approaches showed that hydrophilic Pseudomonas strains exhibited highest adhesion to the tile surface, while least adhesion was observed on the stainless steel surface material. A diverse relationship was detected between the thermodynamic affinity of cells to the surfaces (higher water contact angle and energy of adhesion) and cell inactivation. The results can be useful to the hygiene manufacture of food processing facilities or to choose appropriate sanitation strategies for the existing plants.
| Original language | English |
|---|---|
| Pages (from-to) | 71-78 |
| Number of pages | 8 |
| Journal | Food and Bioproducts processing |
| Volume | 98 |
| Early online date | 08 Jan 2016 |
| DOIs | |
| Publication status | Published - Apr 2016 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2015 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Keywords
- Energy of adhesion
- Pseudomonas spp.
- QACs adaptation
- Quaternary Ammonium Compounds
- Surface properties
ASJC Scopus subject areas
- Biotechnology
- Food Science
- Biochemistry
- Chemical Engineering(all)