Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification
- Autores
- Torino, Maria Ines; Sesma, Fernando Juan Manuel; Font, Graciela Maria
- Año de publicación
- 2000
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Growth and exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 was evaluated in semi-defined media. Lactose (as carbon source) and CaCl2 proved to be the major stimulating factors for an optimal EPS synthesis while the highest specific EPS yield was obtained when CaCl2 and MnSO4 were the only salts added to the medium. Both EPS and cell growth were slightly affected by the nitrogen source. The analysis of the interference components (EPS-eq) in uninoculated media revealed an overestimation in EPS of ca. 76% due to beef extract and yeast extract, and of 64% due to the presence of peptone. Nevertheless, in fermented cultures, the level of interference may be lower since nitrogen compounds are used by the microorganism during growth and residual lactose showed to be easily removed by dialysis before EPS quantification.
Fil: Torino, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Fil: Sesma, Fernando Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Fil: Font, Graciela Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia; Argentina - Materia
-
LACTOBACILLUS HELVETICUS
EXOPOLYSACCHARIDE PRODUCTION - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/51607
Ver los metadatos del registro completo
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3498 |
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spelling |
Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantificationTorino, Maria InesSesma, Fernando Juan ManuelFont, Graciela MariaLACTOBACILLUS HELVETICUSEXOPOLYSACCHARIDE PRODUCTIONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Growth and exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 was evaluated in semi-defined media. Lactose (as carbon source) and CaCl2 proved to be the major stimulating factors for an optimal EPS synthesis while the highest specific EPS yield was obtained when CaCl2 and MnSO4 were the only salts added to the medium. Both EPS and cell growth were slightly affected by the nitrogen source. The analysis of the interference components (EPS-eq) in uninoculated media revealed an overestimation in EPS of ca. 76% due to beef extract and yeast extract, and of 64% due to the presence of peptone. Nevertheless, in fermented cultures, the level of interference may be lower since nitrogen compounds are used by the microorganism during growth and residual lactose showed to be easily removed by dialysis before EPS quantification.Fil: Torino, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; ArgentinaFil: Sesma, Fernando Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; ArgentinaFil: Font, Graciela Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia; ArgentinaAVA-Verlag2000-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/51607Torino, Maria Ines; Sesma, Fernando Juan Manuel; Font, Graciela Maria; Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification; AVA-Verlag; Milchwissenschaft-milk Science International; 55; 6; 12-2000; 314-3160026-37882567-9538CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.milkscience.de/menu-top/about-the-journal/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:51:34Zoai:ri.conicet.gov.ar:11336/51607instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:51:34.947CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification |
title |
Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification |
spellingShingle |
Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification Torino, Maria Ines LACTOBACILLUS HELVETICUS EXOPOLYSACCHARIDE PRODUCTION |
title_short |
Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification |
title_full |
Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification |
title_fullStr |
Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification |
title_full_unstemmed |
Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification |
title_sort |
Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification |
dc.creator.none.fl_str_mv |
Torino, Maria Ines Sesma, Fernando Juan Manuel Font, Graciela Maria |
author |
Torino, Maria Ines |
author_facet |
Torino, Maria Ines Sesma, Fernando Juan Manuel Font, Graciela Maria |
author_role |
author |
author2 |
Sesma, Fernando Juan Manuel Font, Graciela Maria |
author2_role |
author author |
dc.subject.none.fl_str_mv |
LACTOBACILLUS HELVETICUS EXOPOLYSACCHARIDE PRODUCTION |
topic |
LACTOBACILLUS HELVETICUS EXOPOLYSACCHARIDE PRODUCTION |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Growth and exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 was evaluated in semi-defined media. Lactose (as carbon source) and CaCl2 proved to be the major stimulating factors for an optimal EPS synthesis while the highest specific EPS yield was obtained when CaCl2 and MnSO4 were the only salts added to the medium. Both EPS and cell growth were slightly affected by the nitrogen source. The analysis of the interference components (EPS-eq) in uninoculated media revealed an overestimation in EPS of ca. 76% due to beef extract and yeast extract, and of 64% due to the presence of peptone. Nevertheless, in fermented cultures, the level of interference may be lower since nitrogen compounds are used by the microorganism during growth and residual lactose showed to be easily removed by dialysis before EPS quantification. Fil: Torino, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina Fil: Sesma, Fernando Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina Fil: Font, Graciela Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia; Argentina |
description |
Growth and exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 was evaluated in semi-defined media. Lactose (as carbon source) and CaCl2 proved to be the major stimulating factors for an optimal EPS synthesis while the highest specific EPS yield was obtained when CaCl2 and MnSO4 were the only salts added to the medium. Both EPS and cell growth were slightly affected by the nitrogen source. The analysis of the interference components (EPS-eq) in uninoculated media revealed an overestimation in EPS of ca. 76% due to beef extract and yeast extract, and of 64% due to the presence of peptone. Nevertheless, in fermented cultures, the level of interference may be lower since nitrogen compounds are used by the microorganism during growth and residual lactose showed to be easily removed by dialysis before EPS quantification. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-12 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/51607 Torino, Maria Ines; Sesma, Fernando Juan Manuel; Font, Graciela Maria; Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification; AVA-Verlag; Milchwissenschaft-milk Science International; 55; 6; 12-2000; 314-316 0026-3788 2567-9538 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/51607 |
identifier_str_mv |
Torino, Maria Ines; Sesma, Fernando Juan Manuel; Font, Graciela Maria; Semi-defined media for the exopolysaccharide (EPS) production by Lactobacillus helveticus ATCC 15807 and evaluation of the components interfering with the EPS quantification; AVA-Verlag; Milchwissenschaft-milk Science International; 55; 6; 12-2000; 314-316 0026-3788 2567-9538 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.milkscience.de/menu-top/about-the-journal/ |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
AVA-Verlag |
publisher.none.fl_str_mv |
AVA-Verlag |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613585030873088 |
score |
13.070432 |