EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDER
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/197406 |
Resumo: | Three different types of maltodextrin encapsulated dehydrated blackberry fruit powders were obtained using vibrofluidized bed drying (VF), spray drying (SD), vacuum drying (VD), and freeze drying (FD). Moisture equilibrium data of blackberry pulp powders with 18% maltodextrin were determined at 20, 30, 40, and 50 degrees C using the static gravimetric method for the water activity range of 0.06-0.90. Experimental equilibrium moisture content data versus water activity were fit to the Guggenheim-Anderson-de Boer (GAB) model. Agreement was found between experimental and calculated values. The isosteric heat of sorption of water was determined using the Clausius-Clapeyron equation from the equilibrium data; isosteric heats of sorption were found to increase with increasing temperature and could be adjusted by an exponential relationship. For freeze dried, vibrofluidized, and vacuum dried pulp powder samples, the isosteric heats of sorption were lower (more negative) than those calculated for spray dried samples. The enthalpy-entropy compensation theory was applied to sorption isotherms and plots of Delta H versus Delta S provided the isokinetic temperatures, indicating an enthalpy-controlled sorption process. |
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Repositório Institucional da UNESP |
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EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDERFruit pulpdrying methodswater activityisothermsthermodynamic propertiesThree different types of maltodextrin encapsulated dehydrated blackberry fruit powders were obtained using vibrofluidized bed drying (VF), spray drying (SD), vacuum drying (VD), and freeze drying (FD). Moisture equilibrium data of blackberry pulp powders with 18% maltodextrin were determined at 20, 30, 40, and 50 degrees C using the static gravimetric method for the water activity range of 0.06-0.90. Experimental equilibrium moisture content data versus water activity were fit to the Guggenheim-Anderson-de Boer (GAB) model. Agreement was found between experimental and calculated values. The isosteric heat of sorption of water was determined using the Clausius-Clapeyron equation from the equilibrium data; isosteric heats of sorption were found to increase with increasing temperature and could be adjusted by an exponential relationship. For freeze dried, vibrofluidized, and vacuum dried pulp powder samples, the isosteric heats of sorption were lower (more negative) than those calculated for spray dried samples. The enthalpy-entropy compensation theory was applied to sorption isotherms and plots of Delta H versus Delta S provided the isokinetic temperatures, indicating an enthalpy-controlled sorption process.ColcienciasConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Nacl Colombia, Caldas, ColombiaUniv Estadual Paulista, Sao Paulo, BrazilUniv Sao Paulo, BR-13635900 Sao Paulo, BrazilUniv Estadual Paulista, Sao Paulo, BrazilCNPq: 471223/2006-9Univ Nac Colombia, Fac Nac MinasUniv Nacl ColombiaUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Giraldo Gomez, Gloria I.Orrego-Alzate, Carlos E.Grajales, Lina M.Telis, Vania R. N. [UNESP]Gabas, Ana L.Telis-Romero, Javier [UNESP]2020-12-10T22:02:27Z2020-12-10T22:02:27Z2011-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article139-148Dyna-colombia. Medellin: Univ Nac Colombia, Fac Nac Minas, v. 78, n. 168, p. 139-148, 2011.0012-7353http://hdl.handle.net/11449/197406WOS:000294886100018Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengDyna-colombiainfo:eu-repo/semantics/openAccess2021-10-23T12:24:12Zoai:repositorio.unesp.br:11449/197406Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T12:24:12Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDER |
title |
EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDER |
spellingShingle |
EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDER Giraldo Gomez, Gloria I. Fruit pulp drying methods water activity isotherms thermodynamic properties |
title_short |
EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDER |
title_full |
EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDER |
title_fullStr |
EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDER |
title_full_unstemmed |
EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDER |
title_sort |
EFFECT OF DRYING METHODS ON THE THERMODYNAMIC PROPERTIES OF BLACKBERRY PULP POWDER |
author |
Giraldo Gomez, Gloria I. |
author_facet |
Giraldo Gomez, Gloria I. Orrego-Alzate, Carlos E. Grajales, Lina M. Telis, Vania R. N. [UNESP] Gabas, Ana L. Telis-Romero, Javier [UNESP] |
author_role |
author |
author2 |
Orrego-Alzate, Carlos E. Grajales, Lina M. Telis, Vania R. N. [UNESP] Gabas, Ana L. Telis-Romero, Javier [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Univ Nacl Colombia Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Giraldo Gomez, Gloria I. Orrego-Alzate, Carlos E. Grajales, Lina M. Telis, Vania R. N. [UNESP] Gabas, Ana L. Telis-Romero, Javier [UNESP] |
dc.subject.por.fl_str_mv |
Fruit pulp drying methods water activity isotherms thermodynamic properties |
topic |
Fruit pulp drying methods water activity isotherms thermodynamic properties |
description |
Three different types of maltodextrin encapsulated dehydrated blackberry fruit powders were obtained using vibrofluidized bed drying (VF), spray drying (SD), vacuum drying (VD), and freeze drying (FD). Moisture equilibrium data of blackberry pulp powders with 18% maltodextrin were determined at 20, 30, 40, and 50 degrees C using the static gravimetric method for the water activity range of 0.06-0.90. Experimental equilibrium moisture content data versus water activity were fit to the Guggenheim-Anderson-de Boer (GAB) model. Agreement was found between experimental and calculated values. The isosteric heat of sorption of water was determined using the Clausius-Clapeyron equation from the equilibrium data; isosteric heats of sorption were found to increase with increasing temperature and could be adjusted by an exponential relationship. For freeze dried, vibrofluidized, and vacuum dried pulp powder samples, the isosteric heats of sorption were lower (more negative) than those calculated for spray dried samples. The enthalpy-entropy compensation theory was applied to sorption isotherms and plots of Delta H versus Delta S provided the isokinetic temperatures, indicating an enthalpy-controlled sorption process. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-08-01 2020-12-10T22:02:27Z 2020-12-10T22:02:27Z |
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 |
Dyna-colombia. Medellin: Univ Nac Colombia, Fac Nac Minas, v. 78, n. 168, p. 139-148, 2011. 0012-7353 http://hdl.handle.net/11449/197406 WOS:000294886100018 |
identifier_str_mv |
Dyna-colombia. Medellin: Univ Nac Colombia, Fac Nac Minas, v. 78, n. 168, p. 139-148, 2011. 0012-7353 WOS:000294886100018 |
url |
http://hdl.handle.net/11449/197406 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Dyna-colombia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
139-148 |
dc.publisher.none.fl_str_mv |
Univ Nac Colombia, Fac Nac Minas |
publisher.none.fl_str_mv |
Univ Nac Colombia, Fac Nac Minas |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964944992567296 |