Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/75815
Título: | Biofilm formation under high shear stress increases resilience to chemical and mechanical challenges |
Autor(es): | Simões, Lúcia Chaves Gomes, I. B. Sousa, H. Borges, A. Simões, M. |
Palavras-chave: | Biocide tolerance Biofilm resilience Mechanical removal Rotating cylinder reactor Shear stress |
Data: | 2022 |
Editora: | Taylor & Francis |
Revista: | Biofouling: The Journal of Bioadhesion and Biofilm Research |
Citação: | Simões, Lúcia C.; Gomes, I. B.; Sousa, H.; Borges, A.; Simões, M., Biofilm formation under high shear stress increases resilience to chemical and mechanical challenges. Biofouling, 38(1), 1-12, 2022 |
Resumo(s): | The effect that the hydrodynamic conditions under which biofilms are formed has on their persistence is still unknown. This study assessed the behaviour of Pseudomonas fluorescens biofilms, formed on stainless steel under different shear stress (sw) conditions (1, 2 and 4 Pa), to chemical (benzalkonium chloride – BAC, glutaraldehyde – GLUT and sodium hypochlorite – SHC) and mechanical (20 Pa) treatments (alone and combined). The biofilms formed under different sw showed different structural characteristics. Those formed under a higher sw were invariably more tolerant to chemical and mechanical stresses. SHC was the biocide which caused the highest biofilm killing and removal, followed by BAC. The sequential exposure to biocides and mechanical stress was found to be insufficient for effective biofilm control. A basal layer containing biofilm cells mostly in a viable state remained on the surface of the cylinders, particularly for the 2 and 4 Pa-generated biofilms. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/75815 |
DOI: | 10.1080/08927014.2021.2006189 |
ISSN: | 0892-7014 |
e-ISSN: | 1029-2454 |
Versão da editora: | http://www.tandfonline.com/action/journalInformation?journalCode=gbif20 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
document_55026_1.pdf Acesso restrito! | 2,34 MB | Adobe PDF | Ver/Abrir |