Viscoelastic characteristics of Granny Smith apple during glucose osmotic dehydration

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Viscoelastic properties of apple tissue during osmotic dehydration in a 25.0% w/w glucose aqueous solution at 20 °C were analyzed in a dynamic rheometer using oscillatory shear and creep-recovery tests. Both storage (G′) and loss (G″) moduli for fresh and osmotically dehydrated tissues showed a weak...

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Autores principales: Martínez, V.Y., Nieto, A.B., Castro, M.A., Salvatori, D., Alzamora, S.M.
Formato: JOUR
Materias:
Apple
Glucose
Osmotic dehydration
Viscoelastic properties
Correlation coefficient
Creep compliance response
Creep-recovery test
Decay compliances
Glucose osmotic dehydration
Kelvin model
Oscillatory shear
Viscoelastic solid behavior
Dehydration
Osmosis
Rheometers
Scanning electron microscopy
Viscoelasticity
Fruits
Malus x domestica
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02608774_v83_n3_p394_Martinez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02608774_v83_n3_p394_Martinez
record_format dspace
spelling todo:paper_02608774_v83_n3_p394_Martinez2023-10-03T15:12:20Z Viscoelastic characteristics of Granny Smith apple during glucose osmotic dehydration Martínez, V.Y. Nieto, A.B. Castro, M.A. Salvatori, D. Alzamora, S.M. Apple Glucose Osmotic dehydration Viscoelastic properties Correlation coefficient Creep compliance response Creep-recovery test Decay compliances Glucose osmotic dehydration Kelvin model Oscillatory shear Osmotic dehydration Viscoelastic solid behavior Dehydration Osmosis Rheometers Scanning electron microscopy Viscoelasticity Fruits Malus x domestica Viscoelastic properties of apple tissue during osmotic dehydration in a 25.0% w/w glucose aqueous solution at 20 °C were analyzed in a dynamic rheometer using oscillatory shear and creep-recovery tests. Both storage (G′) and loss (G″) moduli for fresh and osmotically dehydrated tissues showed a weaker dependence with angular frequency. All samples had a viscoelastic solid behavior with G′ dominating the viscoelastic response, but in general both moduli decreased with time of osmosis. For the time scale of the experiments, a generalized Kelvin model with six elements properly predicted the creep compliance response, with a correlation coefficient >0.999 for all samples. In general, initial (J0) and decay compliances (J1 and J2) and steady-state fluidity (ηN) significantly increased as treatment proceeded. Between 40 and 90 or 120 min osmosis, many rheological parameters (G′ at frequencies in the range 1-100 s-1; loss tangent at 0.1 s-1, J1, retardation times (λ1 and λ2), relative contribution of each type of compliance, ηN, plasticity, and overall compliance) showed a turning point, fluctuations or the greatest changes in the evolution along treatment. This behavior was related with shrinkage and posterior round shape recuperation and swelling of the cells, as seen in previous light and environmental scanning electron microscopy studies. © 2007 Elsevier Ltd. All rights reserved. Fil:Martínez, V.Y. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Nieto, A.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Castro, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Alzamora, S.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02608774_v83_n3_p394_Martinez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Apple
Glucose
Osmotic dehydration
Viscoelastic properties
Correlation coefficient
Creep compliance response
Creep-recovery test
Decay compliances
Glucose osmotic dehydration
Kelvin model
Oscillatory shear
Osmotic dehydration
Viscoelastic solid behavior
Dehydration
Osmosis
Rheometers
Scanning electron microscopy
Viscoelasticity
Fruits
Malus x domestica
spellingShingle Apple
Glucose
Osmotic dehydration
Viscoelastic properties
Correlation coefficient
Creep compliance response
Creep-recovery test
Decay compliances
Glucose osmotic dehydration
Kelvin model
Oscillatory shear
Osmotic dehydration
Viscoelastic solid behavior
Dehydration
Osmosis
Rheometers
Scanning electron microscopy
Viscoelasticity
Fruits
Malus x domestica
Martínez, V.Y.
Nieto, A.B.
Castro, M.A.
Salvatori, D.
Alzamora, S.M.
Viscoelastic characteristics of Granny Smith apple during glucose osmotic dehydration
topic_facet Apple
Glucose
Osmotic dehydration
Viscoelastic properties
Correlation coefficient
Creep compliance response
Creep-recovery test
Decay compliances
Glucose osmotic dehydration
Kelvin model
Oscillatory shear
Osmotic dehydration
Viscoelastic solid behavior
Dehydration
Osmosis
Rheometers
Scanning electron microscopy
Viscoelasticity
Fruits
Malus x domestica
description Viscoelastic properties of apple tissue during osmotic dehydration in a 25.0% w/w glucose aqueous solution at 20 °C were analyzed in a dynamic rheometer using oscillatory shear and creep-recovery tests. Both storage (G′) and loss (G″) moduli for fresh and osmotically dehydrated tissues showed a weaker dependence with angular frequency. All samples had a viscoelastic solid behavior with G′ dominating the viscoelastic response, but in general both moduli decreased with time of osmosis. For the time scale of the experiments, a generalized Kelvin model with six elements properly predicted the creep compliance response, with a correlation coefficient >0.999 for all samples. In general, initial (J0) and decay compliances (J1 and J2) and steady-state fluidity (ηN) significantly increased as treatment proceeded. Between 40 and 90 or 120 min osmosis, many rheological parameters (G′ at frequencies in the range 1-100 s-1; loss tangent at 0.1 s-1, J1, retardation times (λ1 and λ2), relative contribution of each type of compliance, ηN, plasticity, and overall compliance) showed a turning point, fluctuations or the greatest changes in the evolution along treatment. This behavior was related with shrinkage and posterior round shape recuperation and swelling of the cells, as seen in previous light and environmental scanning electron microscopy studies. © 2007 Elsevier Ltd. All rights reserved.
format JOUR
author Martínez, V.Y.
Nieto, A.B.
Castro, M.A.
Salvatori, D.
Alzamora, S.M.
author_facet Martínez, V.Y.
Nieto, A.B.
Castro, M.A.
Salvatori, D.
Alzamora, S.M.
author_sort Martínez, V.Y.
title Viscoelastic characteristics of Granny Smith apple during glucose osmotic dehydration
title_short Viscoelastic characteristics of Granny Smith apple during glucose osmotic dehydration
title_full Viscoelastic characteristics of Granny Smith apple during glucose osmotic dehydration
title_fullStr Viscoelastic characteristics of Granny Smith apple during glucose osmotic dehydration
title_full_unstemmed Viscoelastic characteristics of Granny Smith apple during glucose osmotic dehydration
title_sort viscoelastic characteristics of granny smith apple during glucose osmotic dehydration
url http://hdl.handle.net/20.500.12110/paper_02608774_v83_n3_p394_Martinez
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AT nietoab viscoelasticcharacteristicsofgrannysmithappleduringglucoseosmoticdehydration
AT castroma viscoelasticcharacteristicsofgrannysmithappleduringglucoseosmoticdehydration
AT salvatorid viscoelasticcharacteristicsofgrannysmithappleduringglucoseosmoticdehydration
AT alzamorasm viscoelasticcharacteristicsofgrannysmithappleduringglucoseosmoticdehydration
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