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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1993
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v28_n2_p153_ROVEDO http://hdl.handle.net/20.500.12110/paper_09505423_v28_n2_p153_ROVEDO |
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paper:paper_09505423_v28_n2_p153_ROVEDO2023-06-08T15:54:41Z Measuring and modelling the water vapour desorption in sunflower seed 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 1993 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v28_n2_p153_ROVEDO 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 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 |
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 |
publishDate |
1993 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v28_n2_p153_ROVEDO http://hdl.handle.net/20.500.12110/paper_09505423_v28_n2_p153_ROVEDO |
_version_ |
1768545381836128256 |