Physico-chemical surface characterization of a bacterial population isolated from a milking machine
Autor(a) principal: | |
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Data de Publicação: | 2005 |
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/1822/2571 |
Resumo: | The hydrophobicity of 26 species of bacteria representative of the main genera isolated from a rubber short milk tube, which is a constituent of a cluster from a milking machine, was determined. The materials forming the cluster namely rubber, stainless steel (SS) 316, stainless steel (SS) 304, glass and polymethylmethacrylate (PMMA) were also assayed in terms of hydrophobicity. In relation with the hydrophobicity of bacteria, all the strains of Lactobacillus lactis lactis as well as of Enterococcus faecalis are hydrophobic. Concerning Pseudomonas aeruginosa and Staphylococcus sciuri, some are hydrophobic and others are hydrophilic. All the materials are hydrophobic, being rubber, SS 316 and SS 304 the most hydrophobic surfaces while glass is the less hydrophobic. The free energy of adhesion between the bacteria and the materials in aqueous medium was calculated and used to predict which material of the cluster has a higher ability for biofilm formation and by this way contribute for milk contamination due to the release of bacteria from the deposit. For all the situations studied, adhesion is thermodynamically favourable to SS 316, SS 304 and rubber and less favourable to PMMA and glass. |
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Physico-chemical surface characterization of a bacterial population isolated from a milking machineSurface hydrophobicityBacterial adhesionMicrobial attachmentMilking machineDairy processScience & TechnologyThe hydrophobicity of 26 species of bacteria representative of the main genera isolated from a rubber short milk tube, which is a constituent of a cluster from a milking machine, was determined. The materials forming the cluster namely rubber, stainless steel (SS) 316, stainless steel (SS) 304, glass and polymethylmethacrylate (PMMA) were also assayed in terms of hydrophobicity. In relation with the hydrophobicity of bacteria, all the strains of Lactobacillus lactis lactis as well as of Enterococcus faecalis are hydrophobic. Concerning Pseudomonas aeruginosa and Staphylococcus sciuri, some are hydrophobic and others are hydrophilic. All the materials are hydrophobic, being rubber, SS 316 and SS 304 the most hydrophobic surfaces while glass is the less hydrophobic. The free energy of adhesion between the bacteria and the materials in aqueous medium was calculated and used to predict which material of the cluster has a higher ability for biofilm formation and by this way contribute for milk contamination due to the release of bacteria from the deposit. For all the situations studied, adhesion is thermodynamically favourable to SS 316, SS 304 and rubber and less favourable to PMMA and glass.Ministério da Agricultura, do Desenvolvimento Rural e das Pescas (INIAP) - Project AGRO 205.ElsevierUniversidade do MinhoTeixeira, P.Lopes, ZulmiraAzeredo, JoanaOliveira, RosárioVieira, M. J.20052005-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/2571eng"Food microbiology". ISSN 0740-0020. 22:2-3 (2005) 247-251.0740-002010.1016/j.fm.2004.03.010http://www.elsevier.com/wps/find/homepage.cws_homehttp://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6WFP-4DN70R5-F-Y&_cdi=6800&_user=2459786&_orig=browse&_coverDate=06%2F30%2F2005&_sk=999779997&view=c&wchp=dGLbVzz-zSkWA&md5=ec6736ed6ff20791cf7ae7d3ce281406&ie=/sdarticle.pdfinfo: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:RCAAP2023-07-21T12:32:36Zoai:repositorium.sdum.uminho.pt:1822/2571Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:27:58.292614Repositório 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 |
Physico-chemical surface characterization of a bacterial population isolated from a milking machine |
title |
Physico-chemical surface characterization of a bacterial population isolated from a milking machine |
spellingShingle |
Physico-chemical surface characterization of a bacterial population isolated from a milking machine Teixeira, P. Surface hydrophobicity Bacterial adhesion Microbial attachment Milking machine Dairy process Science & Technology |
title_short |
Physico-chemical surface characterization of a bacterial population isolated from a milking machine |
title_full |
Physico-chemical surface characterization of a bacterial population isolated from a milking machine |
title_fullStr |
Physico-chemical surface characterization of a bacterial population isolated from a milking machine |
title_full_unstemmed |
Physico-chemical surface characterization of a bacterial population isolated from a milking machine |
title_sort |
Physico-chemical surface characterization of a bacterial population isolated from a milking machine |
author |
Teixeira, P. |
author_facet |
Teixeira, P. Lopes, Zulmira Azeredo, Joana Oliveira, Rosário Vieira, M. J. |
author_role |
author |
author2 |
Lopes, Zulmira Azeredo, Joana Oliveira, Rosário Vieira, M. J. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Teixeira, P. Lopes, Zulmira Azeredo, Joana Oliveira, Rosário Vieira, M. J. |
dc.subject.por.fl_str_mv |
Surface hydrophobicity Bacterial adhesion Microbial attachment Milking machine Dairy process Science & Technology |
topic |
Surface hydrophobicity Bacterial adhesion Microbial attachment Milking machine Dairy process Science & Technology |
description |
The hydrophobicity of 26 species of bacteria representative of the main genera isolated from a rubber short milk tube, which is a constituent of a cluster from a milking machine, was determined. The materials forming the cluster namely rubber, stainless steel (SS) 316, stainless steel (SS) 304, glass and polymethylmethacrylate (PMMA) were also assayed in terms of hydrophobicity. In relation with the hydrophobicity of bacteria, all the strains of Lactobacillus lactis lactis as well as of Enterococcus faecalis are hydrophobic. Concerning Pseudomonas aeruginosa and Staphylococcus sciuri, some are hydrophobic and others are hydrophilic. All the materials are hydrophobic, being rubber, SS 316 and SS 304 the most hydrophobic surfaces while glass is the less hydrophobic. The free energy of adhesion between the bacteria and the materials in aqueous medium was calculated and used to predict which material of the cluster has a higher ability for biofilm formation and by this way contribute for milk contamination due to the release of bacteria from the deposit. For all the situations studied, adhesion is thermodynamically favourable to SS 316, SS 304 and rubber and less favourable to PMMA and glass. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005 2005-01-01T00:00:00Z |
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/1822/2571 |
url |
http://hdl.handle.net/1822/2571 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Food microbiology". ISSN 0740-0020. 22:2-3 (2005) 247-251. 0740-0020 10.1016/j.fm.2004.03.010 http://www.elsevier.com/wps/find/homepage.cws_home http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6WFP-4DN70R5-F-Y&_cdi=6800&_user=2459786&_orig=browse&_coverDate=06%2F30%2F2005&_sk=999779997&view=c&wchp=dGLbVzz-zSkWA&md5=ec6736ed6ff20791cf7ae7d3ce281406&ie=/sdarticle.pdf |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
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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1799132773035802624 |