Measuring and modelling the water vapour desorption in sunflower seed

Water activities of sunflower seed (whole), hull and endosperm were measured at 25, 40 and 50°C and different moisture contents by means of an electronic aw‐meter in the range 0.199‐0.867. Based on the equilibrium between the water in air and a constant moisture specimen, the method permits a direct...

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Autores principales: ROVEDO, C.O., AGUERRE, R.J., SUAREZ, C.
Formato: JOUR
Materias:
Desorption
drying
isosteric heat
isotherm
oilseed
storage
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09505423_v28_n2_p153_ROVEDO
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09505423_v28_n2_p153_ROVEDO2023-10-03T15:50:20Z Measuring and modelling the water vapour desorption in sunflower seed ROVEDO, C.O. AGUERRE, R.J. SUAREZ, C. Desorption drying isosteric heat isotherm oilseed storage Water activities of sunflower seed (whole), hull and endosperm were measured at 25, 40 and 50°C and different moisture contents by means of an electronic aw‐meter in the range 0.199‐0.867. Based on the equilibrium between the water in air and a constant moisture specimen, the method permits a direct measurement of the isosteres and was used to estimate the variation of the isosteric heat with moisture content. In the range of temperature investigated it was found that the isosteric heat is pracitically independent of temperature. the hygroscopic equilibrium data of the different materials were modelled by a BET‐type two parameter isotherm for the whole range of water activity investigated. Copyright © 1993, Wiley Blackwell. All rights reserved JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09505423_v28_n2_p153_ROVEDO
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Desorption
drying
isosteric heat
isotherm
oilseed
storage
spellingShingle Desorption
drying
isosteric heat
isotherm
oilseed
storage
ROVEDO, C.O.
AGUERRE, R.J.
SUAREZ, C.
Measuring and modelling the water vapour desorption in sunflower seed
topic_facet Desorption
drying
isosteric heat
isotherm
oilseed
storage
description Water activities of sunflower seed (whole), hull and endosperm were measured at 25, 40 and 50°C and different moisture contents by means of an electronic aw‐meter in the range 0.199‐0.867. Based on the equilibrium between the water in air and a constant moisture specimen, the method permits a direct measurement of the isosteres and was used to estimate the variation of the isosteric heat with moisture content. In the range of temperature investigated it was found that the isosteric heat is pracitically independent of temperature. the hygroscopic equilibrium data of the different materials were modelled by a BET‐type two parameter isotherm for the whole range of water activity investigated. Copyright © 1993, Wiley Blackwell. All rights reserved
format JOUR
author ROVEDO, C.O.
AGUERRE, R.J.
SUAREZ, C.
author_facet ROVEDO, C.O.
AGUERRE, R.J.
SUAREZ, C.
author_sort ROVEDO, C.O.
title Measuring and modelling the water vapour desorption in sunflower seed
title_short Measuring and modelling the water vapour desorption in sunflower seed
title_full Measuring and modelling the water vapour desorption in sunflower seed
title_fullStr Measuring and modelling the water vapour desorption in sunflower seed
title_full_unstemmed Measuring and modelling the water vapour desorption in sunflower seed
title_sort measuring and modelling the water vapour desorption in sunflower seed
url http://hdl.handle.net/20.500.12110/paper_09505423_v28_n2_p153_ROVEDO
work_keys_str_mv AT rovedoco measuringandmodellingthewatervapourdesorptioninsunflowerseed
AT aguerrerj measuringandmodellingthewatervapourdesorptioninsunflowerseed
AT suarezc measuringandmodellingthewatervapourdesorptioninsunflowerseed
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