Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols

Autores
Baeza, Rosa; Pérez, Adriana; Sánchez, Virginia; Zamora, María Clara; Chirife, Jorge
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Baeza, Rosa. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Fil: Pérez, Adriana. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Fil: Sánchez, Virginia. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Fil: Zamora, María Clara. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zamora, María Clara. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Fil: Chirife, Jorge. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Abstract: Norrish’s equation, (aw = Xw exp (-K Xs 2), where aw is water activity, Xw and Xs molar fractions of water and solute, respectively, and K is the correlating constant), has been widely used to predict aw of aqueous non-electrolyte solutions in connection with development of intermediate moisture foods, i.e. food having aw ≥ 0.85. Present work evaluated the ability of Norrish’s equation to model the water activity of solutions of sugars, polyols and some polyethylenglycols, in a wide range of concentration; i.e. from low to highly concentrated solutions. For sugar and polyols a relatively small modification of the “most accepted” literature parameters K, allowed to fit the data for the whole range of solute concentrations(range of aw 0.99 to 0.3/0.4) with high accuracy. However, a modified Norrish’s model needs to be used to model the behavior of polyethylenglycols 400 and 600 up to water activities as low 0.4/0.5.
Materia
ACTIVIDAD DEL AGUA
AZUCARES
ECUACION DE NORRISH
ALIMENTOS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
Repositorio Institucional (UCA)
Institución
Pontificia Universidad Católica Argentina
OAI Identificador
oai:ucacris:123456789/5462
Acceder
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oai_identifier_str oai:ucacris:123456789/5462
network_acronym_str RIUCA
repository_id_str 2585
network_name_str Repositorio Institucional (UCA)
spelling Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycolsBaeza, RosaPérez, AdrianaSánchez, VirginiaZamora, María ClaraChirife, JorgeACTIVIDAD DEL AGUAAZUCARESECUACION DE NORRISHALIMENTOSFil: Baeza, Rosa. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; ArgentinaFil: Pérez, Adriana. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; ArgentinaFil: Sánchez, Virginia. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; ArgentinaFil: Zamora, María Clara. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Zamora, María Clara. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; ArgentinaFil: Chirife, Jorge. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; ArgentinaAbstract: Norrish’s equation, (aw = Xw exp (-K Xs 2), where aw is water activity, Xw and Xs molar fractions of water and solute, respectively, and K is the correlating constant), has been widely used to predict aw of aqueous non-electrolyte solutions in connection with development of intermediate moisture foods, i.e. food having aw ≥ 0.85. Present work evaluated the ability of Norrish’s equation to model the water activity of solutions of sugars, polyols and some polyethylenglycols, in a wide range of concentration; i.e. from low to highly concentrated solutions. For sugar and polyols a relatively small modification of the “most accepted” literature parameters K, allowed to fit the data for the whole range of solute concentrations(range of aw 0.99 to 0.3/0.4) with high accuracy. However, a modified Norrish’s model needs to be used to model the behavior of polyethylenglycols 400 and 600 up to water activities as low 0.4/0.5.Universidad Católica Argentina. Facultad de Ciencias Agrarias2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://repositorio.uca.edu.ar/handle/123456789/5462Baeza, R., Pérez, A., Sánchez, V., Zamora, M. C. and Chirife, J. (2010), Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols [en línea]. Food and Bioprocess Technology, 3(1). doi: 10.1007/s11947-007-0052-8 Disponible en: https://repositorio.uca.edu.ar/handle/123456789/5462enginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:Repositorio Institucional (UCA)instname:Pontificia Universidad Católica Argentina2025-07-03T10:56:07Zoai:ucacris:123456789/5462instacron:UCAInstitucionalhttps://repositorio.uca.edu.ar/Universidad privadaNo correspondehttps://repositorio.uca.edu.ar/oaiclaudia_fernandez@uca.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:25852025-07-03 10:56:07.883Repositorio Institucional (UCA) - Pontificia Universidad Católica Argentinafalse
dc.title.none.fl_str_mv Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols
title Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols
spellingShingle Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols
Baeza, Rosa
ACTIVIDAD DEL AGUA
AZUCARES
ECUACION DE NORRISH
ALIMENTOS
title_short Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols
title_full Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols
title_fullStr Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols
title_full_unstemmed Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols
title_sort Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols
dc.creator.none.fl_str_mv Baeza, Rosa
Pérez, Adriana
Sánchez, Virginia
Zamora, María Clara
Chirife, Jorge
author Baeza, Rosa
author_facet Baeza, Rosa
Pérez, Adriana
Sánchez, Virginia
Zamora, María Clara
Chirife, Jorge
author_role author
author2 Pérez, Adriana
Sánchez, Virginia
Zamora, María Clara
Chirife, Jorge
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Católica Argentina. Facultad de Ciencias Agrarias
dc.subject.none.fl_str_mv ACTIVIDAD DEL AGUA
AZUCARES
ECUACION DE NORRISH
ALIMENTOS
topic ACTIVIDAD DEL AGUA
AZUCARES
ECUACION DE NORRISH
ALIMENTOS
dc.description.none.fl_txt_mv Fil: Baeza, Rosa. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Fil: Pérez, Adriana. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Fil: Sánchez, Virginia. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Fil: Zamora, María Clara. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zamora, María Clara. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Fil: Chirife, Jorge. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
Abstract: Norrish’s equation, (aw = Xw exp (-K Xs 2), where aw is water activity, Xw and Xs molar fractions of water and solute, respectively, and K is the correlating constant), has been widely used to predict aw of aqueous non-electrolyte solutions in connection with development of intermediate moisture foods, i.e. food having aw ≥ 0.85. Present work evaluated the ability of Norrish’s equation to model the water activity of solutions of sugars, polyols and some polyethylenglycols, in a wide range of concentration; i.e. from low to highly concentrated solutions. For sugar and polyols a relatively small modification of the “most accepted” literature parameters K, allowed to fit the data for the whole range of solute concentrations(range of aw 0.99 to 0.3/0.4) with high accuracy. However, a modified Norrish’s model needs to be used to model the behavior of polyethylenglycols 400 and 600 up to water activities as low 0.4/0.5.
description Fil: Baeza, Rosa. Pontificia Universidad Católica Argentina. Facultad de Ciencias Agrarias; Argentina
publishDate 2010
dc.date.none.fl_str_mv 2010
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 https://repositorio.uca.edu.ar/handle/123456789/5462
Baeza, R., Pérez, A., Sánchez, V., Zamora, M. C. and Chirife, J. (2010), Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols [en línea]. Food and Bioprocess Technology, 3(1). doi: 10.1007/s11947-007-0052-8 Disponible en: https://repositorio.uca.edu.ar/handle/123456789/5462
url https://repositorio.uca.edu.ar/handle/123456789/5462
identifier_str_mv Baeza, R., Pérez, A., Sánchez, V., Zamora, M. C. and Chirife, J. (2010), Evaluation of Norrish's equation for correlating the water activity of highly concentrated solutions of sugars, polyols and polyethylene glycols [en línea]. Food and Bioprocess Technology, 3(1). doi: 10.1007/s11947-007-0052-8 Disponible en: https://repositorio.uca.edu.ar/handle/123456789/5462
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Institucional (UCA)
instname:Pontificia Universidad Católica Argentina
reponame_str Repositorio Institucional (UCA)
collection Repositorio Institucional (UCA)
instname_str Pontificia Universidad Católica Argentina
repository.name.fl_str_mv Repositorio Institucional (UCA) - Pontificia Universidad Católica Argentina
repository.mail.fl_str_mv claudia_fernandez@uca.edu.ar
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score 13.070432

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