Measuring and modeling grain sorption equilibria of amaranth grains

Water activity (a(w)) of Amaranthus cruentus were measured at 35, 45, and 65°C at different moisture contents by means of an electronic water activity meter. Experimental curves were fitted to one three-parameter equation (GAB equation). The equilibrium values and temperature shifts were modeled wit...

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Autores principales: Pollio, M.L., Tolaba, M.P., Suárez, C.
Formato: JOUR
Materias:
Amaranthus
Amaranthus caudatus
Amaranthus cruentus
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00090352_v75_n3_p297_Pollio
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00090352_v75_n3_p297_Pollio
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spelling todo:paper_00090352_v75_n3_p297_Pollio2023-10-03T14:07:57Z Measuring and modeling grain sorption equilibria of amaranth grains Pollio, M.L. Tolaba, M.P. Suárez, C. Amaranthus Amaranthus caudatus Amaranthus cruentus Water activity (a(w)) of Amaranthus cruentus were measured at 35, 45, and 65°C at different moisture contents by means of an electronic water activity meter. Experimental curves were fitted to one three-parameter equation (GAB equation). The equilibrium values and temperature shifts were modeled with a three-parameter equation in the approximate a(w) range of 0.03-0.88. An analytical expression to calculate the isosteric heat of sorption and its moisture content dependence was used, and the results were compared with the isosteric heat calculated from the experimental equilibrium data by means of the Clausius-Clapeyron equation. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00090352_v75_n3_p297_Pollio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Amaranthus
Amaranthus caudatus
Amaranthus cruentus
spellingShingle Amaranthus
Amaranthus caudatus
Amaranthus cruentus
Pollio, M.L.
Tolaba, M.P.
Suárez, C.
Measuring and modeling grain sorption equilibria of amaranth grains
topic_facet Amaranthus
Amaranthus caudatus
Amaranthus cruentus
description Water activity (a(w)) of Amaranthus cruentus were measured at 35, 45, and 65°C at different moisture contents by means of an electronic water activity meter. Experimental curves were fitted to one three-parameter equation (GAB equation). The equilibrium values and temperature shifts were modeled with a three-parameter equation in the approximate a(w) range of 0.03-0.88. An analytical expression to calculate the isosteric heat of sorption and its moisture content dependence was used, and the results were compared with the isosteric heat calculated from the experimental equilibrium data by means of the Clausius-Clapeyron equation.
format JOUR
author Pollio, M.L.
Tolaba, M.P.
Suárez, C.
author_facet Pollio, M.L.
Tolaba, M.P.
Suárez, C.
author_sort Pollio, M.L.
title Measuring and modeling grain sorption equilibria of amaranth grains
title_short Measuring and modeling grain sorption equilibria of amaranth grains
title_full Measuring and modeling grain sorption equilibria of amaranth grains
title_fullStr Measuring and modeling grain sorption equilibria of amaranth grains
title_full_unstemmed Measuring and modeling grain sorption equilibria of amaranth grains
title_sort measuring and modeling grain sorption equilibria of amaranth grains
url http://hdl.handle.net/20.500.12110/paper_00090352_v75_n3_p297_Pollio
work_keys_str_mv AT pollioml measuringandmodelinggrainsorptionequilibriaofamaranthgrains
AT tolabamp measuringandmodelinggrainsorptionequilibriaofamaranthgrains
AT suarezc measuringandmodelinggrainsorptionequilibriaofamaranthgrains
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