Modeling yerba mate aqueous extraction kinetics: Influence of temperature

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A new kinetics model, a combined second-order-diffusional kinetics model, was developed and compared with a pseudo first-order model for the aqueous extraction of total water soluble solids (WSS) from yerba mate leaves. The model that coupled two mechanisms fits the experimental data more satisfacto...

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Autores principales: Linares, A.R., Hase, S.L., Vergara, M.L., Resnik, S.L.
Formato: JOUR
Materias:
Activation energy
Aqueous extraction
Kinetics modeling
Yerba mate
Concentration of
Different mechanisms
Equilibrium concentration
Experimental data
Extraction yield
First-order models
Kinetics models
Kinetics parameter
Second orders
Temperature range
Watersoluble
Yerba mate leaves
Solvent extraction
Croton ovalifolius
Ilex paraguariensis
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02608774_v97_n4_p471_Linares
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02608774_v97_n4_p471_Linares
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spelling todo:paper_02608774_v97_n4_p471_Linares2023-10-03T15:12:25Z Modeling yerba mate aqueous extraction kinetics: Influence of temperature Linares, A.R. Hase, S.L. Vergara, M.L. Resnik, S.L. Activation energy Aqueous extraction Kinetics modeling Yerba mate Aqueous extraction Concentration of Different mechanisms Equilibrium concentration Experimental data Extraction yield First-order models Kinetics models Kinetics parameter Second orders Temperature range Watersoluble Yerba mate leaves Activation energy Solvent extraction Croton ovalifolius Ilex paraguariensis A new kinetics model, a combined second-order-diffusional kinetics model, was developed and compared with a pseudo first-order model for the aqueous extraction of total water soluble solids (WSS) from yerba mate leaves. The model that coupled two mechanisms fits the experimental data more satisfactorily (E% = 1.2 to 2.2) than the pseudo first-order model (E% = 3.9 to 4.4). The second-order-diffusional model could explain the first seconds of the WSS extraction and how the different mechanisms contributed to the concentration of the extract. Temperature influenced the kinetics parameters, but the equilibrium concentrations and the extraction yield were not significantly influenced in a temperature range between 40 and 70 °C. © 2009 Elsevier Ltd. All rights reserved. Fil:Linares, A.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Resnik, S.L. 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_v97_n4_p471_Linares
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Activation energy
Aqueous extraction
Kinetics modeling
Yerba mate
Aqueous extraction
Concentration of
Different mechanisms
Equilibrium concentration
Experimental data
Extraction yield
First-order models
Kinetics models
Kinetics parameter
Second orders
Temperature range
Watersoluble
Yerba mate leaves
Activation energy
Solvent extraction
Croton ovalifolius
Ilex paraguariensis
spellingShingle Activation energy
Aqueous extraction
Kinetics modeling
Yerba mate
Aqueous extraction
Concentration of
Different mechanisms
Equilibrium concentration
Experimental data
Extraction yield
First-order models
Kinetics models
Kinetics parameter
Second orders
Temperature range
Watersoluble
Yerba mate leaves
Activation energy
Solvent extraction
Croton ovalifolius
Ilex paraguariensis
Linares, A.R.
Hase, S.L.
Vergara, M.L.
Resnik, S.L.
Modeling yerba mate aqueous extraction kinetics: Influence of temperature
topic_facet Activation energy
Aqueous extraction
Kinetics modeling
Yerba mate
Aqueous extraction
Concentration of
Different mechanisms
Equilibrium concentration
Experimental data
Extraction yield
First-order models
Kinetics models
Kinetics parameter
Second orders
Temperature range
Watersoluble
Yerba mate leaves
Activation energy
Solvent extraction
Croton ovalifolius
Ilex paraguariensis
description A new kinetics model, a combined second-order-diffusional kinetics model, was developed and compared with a pseudo first-order model for the aqueous extraction of total water soluble solids (WSS) from yerba mate leaves. The model that coupled two mechanisms fits the experimental data more satisfactorily (E% = 1.2 to 2.2) than the pseudo first-order model (E% = 3.9 to 4.4). The second-order-diffusional model could explain the first seconds of the WSS extraction and how the different mechanisms contributed to the concentration of the extract. Temperature influenced the kinetics parameters, but the equilibrium concentrations and the extraction yield were not significantly influenced in a temperature range between 40 and 70 °C. © 2009 Elsevier Ltd. All rights reserved.
format JOUR
author Linares, A.R.
Hase, S.L.
Vergara, M.L.
Resnik, S.L.
author_facet Linares, A.R.
Hase, S.L.
Vergara, M.L.
Resnik, S.L.
author_sort Linares, A.R.
title Modeling yerba mate aqueous extraction kinetics: Influence of temperature
title_short Modeling yerba mate aqueous extraction kinetics: Influence of temperature
title_full Modeling yerba mate aqueous extraction kinetics: Influence of temperature
title_fullStr Modeling yerba mate aqueous extraction kinetics: Influence of temperature
title_full_unstemmed Modeling yerba mate aqueous extraction kinetics: Influence of temperature
title_sort modeling yerba mate aqueous extraction kinetics: influence of temperature
url http://hdl.handle.net/20.500.12110/paper_02608774_v97_n4_p471_Linares
work_keys_str_mv AT linaresar modelingyerbamateaqueousextractionkineticsinfluenceoftemperature
AT hasesl modelingyerbamateaqueousextractionkineticsinfluenceoftemperature
AT vergaraml modelingyerbamateaqueousextractionkineticsinfluenceoftemperature
AT resniksl modelingyerbamateaqueousextractionkineticsinfluenceoftemperature
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