Viscoelastic behaviour of heat-treated whey protein concentrate suspensions

Autores
Meza, Barbara Erica del Valle; Verdini, Roxana Andrea; Rubiolo, Amelia Catalina
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The viscoelastic behaviour of heat-treated whey protein concentrate (WPC) suspensions was studied. Suspensions with total protein (TP) content of 5% and 9% w/v prepared from a commercial WPC with 38% w/w protein were treated at two temperatures (72.5 and 77.5 ºC) during selected times to obtain 60% of denatured protein content. Unheated WPC suspensions were used as control. Frequency sweeps were performed in the range of 0.01–10 Hz at 20 ºC. Mechanical spectra of WPC suspensions were similar to viscoelastic fluids. However, unheated WPC suspensions showed some mechanical characteristics of colloidal crystals, like little dependency of elastic (G0) and viscous (G00) moduli with TP content, solid-like mechanical spectra, and difficulty to flow at low content of TP. At a selected frequency of 1 Hz, viscous modulus was more frequency (u) dependant on experimental conditions (TP and temperature) than elastic modulus. Mechanical spectra were modelled using power law equations (G0 ¼ aux, G00 ¼ buy), but only parameters of heat-treated WPC suspensions containing 9% of TP showed temperature dependency. Characteristic relaxation times (sc) were calculated as the inverse of the crossover frequency, where G00 ¼ G0. Heat treatments produced a decrease in the extent of the elastic behaviour because heat-treated WPC suspensions presented higher phase angle and smaller sc values than unheated WPC suspensions for the same TP content. The sc decreased when treatment temperature increased but only in heattreated WPC suspensions with 5% of TP.
Fil: Meza, Barbara Erica del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Verdini, Roxana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Rubiolo, Amelia Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas; Argentina
Materia
Whey Protein Concentrate Suspensions
Heat Treatment
Viscoelastic Behaviour
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/21695
Acceder
id CONICETDig_e7a1e24364730d7584a264204e7313d1
oai_identifier_str oai:ri.conicet.gov.ar:11336/21695
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Viscoelastic behaviour of heat-treated whey protein concentrate suspensionsMeza, Barbara Erica del ValleVerdini, Roxana AndreaRubiolo, Amelia CatalinaWhey Protein Concentrate SuspensionsHeat TreatmentViscoelastic Behaviourhttps://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2The viscoelastic behaviour of heat-treated whey protein concentrate (WPC) suspensions was studied. Suspensions with total protein (TP) content of 5% and 9% w/v prepared from a commercial WPC with 38% w/w protein were treated at two temperatures (72.5 and 77.5 ºC) during selected times to obtain 60% of denatured protein content. Unheated WPC suspensions were used as control. Frequency sweeps were performed in the range of 0.01–10 Hz at 20 ºC. Mechanical spectra of WPC suspensions were similar to viscoelastic fluids. However, unheated WPC suspensions showed some mechanical characteristics of colloidal crystals, like little dependency of elastic (G0) and viscous (G00) moduli with TP content, solid-like mechanical spectra, and difficulty to flow at low content of TP. At a selected frequency of 1 Hz, viscous modulus was more frequency (u) dependant on experimental conditions (TP and temperature) than elastic modulus. Mechanical spectra were modelled using power law equations (G0 ¼ aux, G00 ¼ buy), but only parameters of heat-treated WPC suspensions containing 9% of TP showed temperature dependency. Characteristic relaxation times (sc) were calculated as the inverse of the crossover frequency, where G00 ¼ G0. Heat treatments produced a decrease in the extent of the elastic behaviour because heat-treated WPC suspensions presented higher phase angle and smaller sc values than unheated WPC suspensions for the same TP content. The sc decreased when treatment temperature increased but only in heattreated WPC suspensions with 5% of TP.Fil: Meza, Barbara Erica del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Verdini, Roxana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Rubiolo, Amelia Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas; ArgentinaElsevier2009-12info: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/11336/21695Meza, Barbara Erica del Valle; Verdini, Roxana Andrea; Rubiolo, Amelia Catalina; Viscoelastic behaviour of heat-treated whey protein concentrate suspensions; Elsevier; Food Hydrocolloids; 23; 3; 12-2009; 661-6660268-005XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.foodhyd.2008.03.015info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0268005X08000817?via%3Dihubinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:18:47Zoai:ri.conicet.gov.ar:11336/21695instacron: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:34982025-09-10 13:18:47.586CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Viscoelastic behaviour of heat-treated whey protein concentrate suspensions
title Viscoelastic behaviour of heat-treated whey protein concentrate suspensions
spellingShingle Viscoelastic behaviour of heat-treated whey protein concentrate suspensions
Meza, Barbara Erica del Valle
Whey Protein Concentrate Suspensions
Heat Treatment
Viscoelastic Behaviour
title_short Viscoelastic behaviour of heat-treated whey protein concentrate suspensions
title_full Viscoelastic behaviour of heat-treated whey protein concentrate suspensions
title_fullStr Viscoelastic behaviour of heat-treated whey protein concentrate suspensions
title_full_unstemmed Viscoelastic behaviour of heat-treated whey protein concentrate suspensions
title_sort Viscoelastic behaviour of heat-treated whey protein concentrate suspensions
dc.creator.none.fl_str_mv Meza, Barbara Erica del Valle
Verdini, Roxana Andrea
Rubiolo, Amelia Catalina
author Meza, Barbara Erica del Valle
author_facet Meza, Barbara Erica del Valle
Verdini, Roxana Andrea
Rubiolo, Amelia Catalina
author_role author
author2 Verdini, Roxana Andrea
Rubiolo, Amelia Catalina
author2_role author
author
dc.subject.none.fl_str_mv Whey Protein Concentrate Suspensions
Heat Treatment
Viscoelastic Behaviour
topic Whey Protein Concentrate Suspensions
Heat Treatment
Viscoelastic Behaviour
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The viscoelastic behaviour of heat-treated whey protein concentrate (WPC) suspensions was studied. Suspensions with total protein (TP) content of 5% and 9% w/v prepared from a commercial WPC with 38% w/w protein were treated at two temperatures (72.5 and 77.5 ºC) during selected times to obtain 60% of denatured protein content. Unheated WPC suspensions were used as control. Frequency sweeps were performed in the range of 0.01–10 Hz at 20 ºC. Mechanical spectra of WPC suspensions were similar to viscoelastic fluids. However, unheated WPC suspensions showed some mechanical characteristics of colloidal crystals, like little dependency of elastic (G0) and viscous (G00) moduli with TP content, solid-like mechanical spectra, and difficulty to flow at low content of TP. At a selected frequency of 1 Hz, viscous modulus was more frequency (u) dependant on experimental conditions (TP and temperature) than elastic modulus. Mechanical spectra were modelled using power law equations (G0 ¼ aux, G00 ¼ buy), but only parameters of heat-treated WPC suspensions containing 9% of TP showed temperature dependency. Characteristic relaxation times (sc) were calculated as the inverse of the crossover frequency, where G00 ¼ G0. Heat treatments produced a decrease in the extent of the elastic behaviour because heat-treated WPC suspensions presented higher phase angle and smaller sc values than unheated WPC suspensions for the same TP content. The sc decreased when treatment temperature increased but only in heattreated WPC suspensions with 5% of TP.
Fil: Meza, Barbara Erica del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Verdini, Roxana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Rubiolo, Amelia Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas; Argentina
description The viscoelastic behaviour of heat-treated whey protein concentrate (WPC) suspensions was studied. Suspensions with total protein (TP) content of 5% and 9% w/v prepared from a commercial WPC with 38% w/w protein were treated at two temperatures (72.5 and 77.5 ºC) during selected times to obtain 60% of denatured protein content. Unheated WPC suspensions were used as control. Frequency sweeps were performed in the range of 0.01–10 Hz at 20 ºC. Mechanical spectra of WPC suspensions were similar to viscoelastic fluids. However, unheated WPC suspensions showed some mechanical characteristics of colloidal crystals, like little dependency of elastic (G0) and viscous (G00) moduli with TP content, solid-like mechanical spectra, and difficulty to flow at low content of TP. At a selected frequency of 1 Hz, viscous modulus was more frequency (u) dependant on experimental conditions (TP and temperature) than elastic modulus. Mechanical spectra were modelled using power law equations (G0 ¼ aux, G00 ¼ buy), but only parameters of heat-treated WPC suspensions containing 9% of TP showed temperature dependency. Characteristic relaxation times (sc) were calculated as the inverse of the crossover frequency, where G00 ¼ G0. Heat treatments produced a decrease in the extent of the elastic behaviour because heat-treated WPC suspensions presented higher phase angle and smaller sc values than unheated WPC suspensions for the same TP content. The sc decreased when treatment temperature increased but only in heattreated WPC suspensions with 5% of TP.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
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/11336/21695
Meza, Barbara Erica del Valle; Verdini, Roxana Andrea; Rubiolo, Amelia Catalina; Viscoelastic behaviour of heat-treated whey protein concentrate suspensions; Elsevier; Food Hydrocolloids; 23; 3; 12-2009; 661-666
0268-005X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21695
identifier_str_mv Meza, Barbara Erica del Valle; Verdini, Roxana Andrea; Rubiolo, Amelia Catalina; Viscoelastic behaviour of heat-treated whey protein concentrate suspensions; Elsevier; Food Hydrocolloids; 23; 3; 12-2009; 661-666
0268-005X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.foodhyd.2008.03.015
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0268005X08000817?via%3Dihub
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
_version_ 1842981024444710912
score 12.48226

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