Exopolymers in bacterial adhesion: interpretation in terms of DLVO and XDLVO theories

Detalhes bibliográficos
Autor(a) principal: Azeredo, Joana
Data de Publicação: 1999
Outros Autores: Visser, Joost, Oliveira, Rosário
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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spelling 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
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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
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