Inhibition of Bacillus cereus in milk fermented with kefir grains

The effects of kefir-fermented milk were tested against a toxigenic strain of Bacillus cereus. The incubation of milk with B. cereus spores plus 5% kefir grains prevented spore germination and growth of vegetative forms. In contrast, when 1% kefir grains was used, no effects were observed. The prese...

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Detalhes bibliográficos
Autores: Kakisu, Emiliano J., Abraham, Analía Graciela, Pérez, Pablo Fernando, De Antoni, Graciela Liliana
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2007
País:Argentina
Recursos:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/143595
Acesso em linha:http://sedici.unlp.edu.ar/handle/10915/143595
Access Level:acceso abierto
Palavra-chave:Química
Kefir-fermented milk
Bacillus cereus
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spelling Inhibition of Bacillus cereus in milk fermented with kefir grainsKakisu, Emiliano J.Abraham, Analía GracielaPérez, Pablo FernandoDe Antoni, Graciela LilianaQuímicaKefir-fermented milkBacillus cereusThe effects of kefir-fermented milk were tested against a toxigenic strain of Bacillus cereus. The incubation of milk with B. cereus spores plus 5% kefir grains prevented spore germination and growth of vegetative forms. In contrast, when 1% kefir grains was used, no effects were observed. The presence of metabolically active kefir grains diminished titers of nonhemolytic enterotoxin A, as assessed by enzyme-linked immunosorbent assay. During fermentation, kefir microorganisms produce extra-cellular metabolites such as organic acids, which could play a role in the inhibition of spore germination and growth of B. cereus, although the effect of other factors cannot be ruled out. Results of the present study show that kefir-fermented milk is able to antagonize key mechanisms involved in the growth of B. cereus as well as interfere with the biological activity of this microorganism.Centro de Investigación y Desarrollo en Criotecnología de AlimentosFacultad de Ciencias Exactas2007-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf2613-2616http://sedici.unlp.edu.ar/handle/10915/143595enginfo:eu-repo/semantics/altIdentifier/issn/0362-028Xinfo:eu-repo/semantics/altIdentifier/issn/1944-9097info:eu-repo/semantics/altIdentifier/doi/10.4315/0362-028x-70.11.2613info:eu-repo/semantics/altIdentifier/pmid/18044443info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T13:10:56Zoai:sedici.unlp.edu.ar:10915/143595Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:10:56.741SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Inhibition of Bacillus cereus in milk fermented with kefir grains
title Inhibition of Bacillus cereus in milk fermented with kefir grains
spellingShingle Inhibition of Bacillus cereus in milk fermented with kefir grains
Kakisu, Emiliano J.
Química
Kefir-fermented milk
Bacillus cereus
title_short Inhibition of Bacillus cereus in milk fermented with kefir grains
title_full Inhibition of Bacillus cereus in milk fermented with kefir grains
title_fullStr Inhibition of Bacillus cereus in milk fermented with kefir grains
title_full_unstemmed Inhibition of Bacillus cereus in milk fermented with kefir grains
title_sort Inhibition of Bacillus cereus in milk fermented with kefir grains
dc.creator.none.fl_str_mv Kakisu, Emiliano J.
Abraham, Analía Graciela
Pérez, Pablo Fernando
De Antoni, Graciela Liliana
author Kakisu, Emiliano J.
author_facet Kakisu, Emiliano J.
Abraham, Analía Graciela
Pérez, Pablo Fernando
De Antoni, Graciela Liliana
author_role author
author2 Abraham, Analía Graciela
Pérez, Pablo Fernando
De Antoni, Graciela Liliana
author2_role author
author
author
dc.subject.none.fl_str_mv Química
Kefir-fermented milk
Bacillus cereus
topic Química
Kefir-fermented milk
Bacillus cereus
description The effects of kefir-fermented milk were tested against a toxigenic strain of Bacillus cereus. The incubation of milk with B. cereus spores plus 5% kefir grains prevented spore germination and growth of vegetative forms. In contrast, when 1% kefir grains was used, no effects were observed. The presence of metabolically active kefir grains diminished titers of nonhemolytic enterotoxin A, as assessed by enzyme-linked immunosorbent assay. During fermentation, kefir microorganisms produce extra-cellular metabolites such as organic acids, which could play a role in the inhibition of spore germination and growth of B. cereus, although the effect of other factors cannot be ruled out. Results of the present study show that kefir-fermented milk is able to antagonize key mechanisms involved in the growth of B. cereus as well as interfere with the biological activity of this microorganism.
publishDate 2007
dc.date.none.fl_str_mv 2007-11-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/143595
url http://sedici.unlp.edu.ar/handle/10915/143595
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0362-028X
info:eu-repo/semantics/altIdentifier/issn/1944-9097
info:eu-repo/semantics/altIdentifier/doi/10.4315/0362-028x-70.11.2613
info:eu-repo/semantics/altIdentifier/pmid/18044443
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
2613-2616
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
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instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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