Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/1473 |
Resumo: | Exopolymers have an important role in bacterial adhesion and are associated with irreversible adhesion. Moreover, they can coat surfaces enhancing or avoiding bacterial colonisation. To study the role of exopolymers in the adhesion of bacteria to glass, three mutants of Sphingomonas paucimobilis (which are high (TR), medium (CV) and low (F72) exopolymer producers), were used. The adhesion tests were performed in phosphate saline buffers and in solutions of the exopolymer produced by each mutant. The DLVO theory was able to explain the results in phosphate saline buffers, although this theory could not explain the results obtained in the presence of the exopolymer. The XDLVO theory enabled the interpretation of the results in the presence of the exopolymer, where hydrophobic interactions played an important role. However, polymeric interactions that are not taken into account in these two theories are also expected to be determinant in the adhesion process. |
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Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theoriesBacterial adhesionDLVO theoryXDLVO theoryExopolymersScience & TechnologyExopolymers have an important role in bacterial adhesion and are associated with irreversible adhesion. Moreover, they can coat surfaces enhancing or avoiding bacterial colonisation. To study the role of exopolymers in the adhesion of bacteria to glass, three mutants of Sphingomonas paucimobilis (which are high (TR), medium (CV) and low (F72) exopolymer producers), were used. The adhesion tests were performed in phosphate saline buffers and in solutions of the exopolymer produced by each mutant. The DLVO theory was able to explain the results in phosphate saline buffers, although this theory could not explain the results obtained in the presence of the exopolymer. The XDLVO theory enabled the interpretation of the results in the presence of the exopolymer, where hydrophobic interactions played an important role. However, polymeric interactions that are not taken into account in these two theories are also expected to be determinant in the adhesion process.Fundação para a Ciência e a Tecnologia (FCT) - PRAXIS XXI - PRAXIS:2:2.1:BIO:37:94.ElsevierUniversidade do MinhoAzeredo, JoanaVisser, JoostOliveira, Rosário19991999-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/1473eng"Surfaces B. Biointerfaces". ISSN 0927-7765. 14 (1999) 141-148.0927-776510.1016/S0927-7765(99)00031-4info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:31:48Zoai:repositorium.sdum.uminho.pt:1822/1473Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:27:05.469913Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories |
title |
Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories |
spellingShingle |
Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories Azeredo, Joana Bacterial adhesion DLVO theory XDLVO theory Exopolymers Science & Technology |
title_short |
Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories |
title_full |
Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories |
title_fullStr |
Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories |
title_full_unstemmed |
Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories |
title_sort |
Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories |
author |
Azeredo, Joana |
author_facet |
Azeredo, Joana Visser, Joost Oliveira, Rosário |
author_role |
author |
author2 |
Visser, Joost Oliveira, Rosário |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Azeredo, Joana Visser, Joost Oliveira, Rosário |
dc.subject.por.fl_str_mv |
Bacterial adhesion DLVO theory XDLVO theory Exopolymers Science & Technology |
topic |
Bacterial adhesion DLVO theory XDLVO theory Exopolymers Science & Technology |
description |
Exopolymers have an important role in bacterial adhesion and are associated with irreversible adhesion. Moreover, they can coat surfaces enhancing or avoiding bacterial colonisation. To study the role of exopolymers in the adhesion of bacteria to glass, three mutants of Sphingomonas paucimobilis (which are high (TR), medium (CV) and low (F72) exopolymer producers), were used. The adhesion tests were performed in phosphate saline buffers and in solutions of the exopolymer produced by each mutant. The DLVO theory was able to explain the results in phosphate saline buffers, although this theory could not explain the results obtained in the presence of the exopolymer. The XDLVO theory enabled the interpretation of the results in the presence of the exopolymer, where hydrophobic interactions played an important role. However, polymeric interactions that are not taken into account in these two theories are also expected to be determinant in the adhesion process. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999 1999-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/1473 |
url |
http://hdl.handle.net/1822/1473 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Surfaces B. Biointerfaces". ISSN 0927-7765. 14 (1999) 141-148. 0927-7765 10.1016/S0927-7765(99)00031-4 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132761280217088 |