[article]
| Titre : |
KOLB colloquium - Biofilm connect industries : 11th November 2015, Restaurant "Au Premier", Zuric Central station |
| Type de document : |
texte imprimé |
| Auteurs : |
Klaus Henning, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 64-71 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Antimicrobiens
Biofilms
Congrès et conférences
Désinfection
Essais (technologie)
Surfactants
|
| Index. décimale : |
668.1 Agents tensioactifs : savons, détergents |
| Résumé : |
Biofilms are highly organised accumulations on interfaces. They can cause serious problems in a range of industrial areas. In the household sector, the formation of biofilms in washing machines and dishwashers can cause hygiene and odour problems, as well as biocorrosion and biofouling. The formation of biofilms in the washing machines is the source of the unpleasant odours that can affect textiles.
At Swissatest, test methods were developed to measure the removal or reduction of biofilms by a screening procedure in a lab-scale test, as well as after a disinfection measure or a washing cycle. After the treatment, the residual quantity of biofilm is measured by the crystal violet assay by Obole (2011), or alternatively by live germ count.
To determine biofilm removal in washing machines, polypropylene ports are used. On their surfaces, a mixed biofilm of three bacterial species (E. roll, S. aureus and P. aeruginosa) is cultivated. By determining the germ counts on the surface of the ports before and after the wash, biofilm removal in one washing cycle or after a cleaning cycle of the machine can be determined. Furthermore, the efficiency of detergents, bleach and additives, as well as the transmission of biofilm germs onto cleaned textiles, can be evaluated. In industry (e.g. paper industry or cooling water systems), biocides are usually applied to combat biofilms by killing the bacteria living in the biofilm, but without removal of biofilm. The addition of dispersant mixtures of non-ionic surfactants that are not themselves biocidal, but physically effective at interfaces, stabilises the surface and delays the formation of biofilms. The biofilm is reduced by being detached and washed away. |
| Note de contenu : |
- Advantages of controlling biofilms with dispersants
- New surfactant applications for surface hygiene
- Standards for the investigation of biofilms
- Test methods of swissatest
- Screening procedure
- Removal and growth of biofilm in the washing machine
- Application in cooling systems
- Dispersants in the paper industry
- Prevention of biofilms in water ooling systems
- Biofilm removal in field test |
| En ligne : |
https://drive.google.com/file/d/1kBB5ibRO_geXDhgV0TXu1k00703_Bcin/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26694 |
in SOFW JOURNAL > Vol. 142, N° 4 (04/2016) . - p. 64-71
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KOLB colloquium - Biofilm connect industries in SOFW JOURNAL, Vol. 142, N° 4 (04/2016)
