Desorption isotherms of shelled maize: whole, dehulled and hulls

Water vapour desorption isotherms of whole kernel maize were determined at 40, 50 and 60°C, and those of dehulled kernels and hulls at 50 and 60°C. It was found that while whole and dehulled kernels show similar equilibrium moisture contents, the hull gives lower values. Equilibrium data were modell...

Descripción completa

Guardado en:
Detalles Bibliográficos
Publicado: 1990
Materias:
BET equation
isosteric heat of desorption
sorption thermodynamics
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v25_n4_p435_TOLABA
http://hdl.handle.net/20.500.12110/paper_09505423_v25_n4_p435_TOLABA
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_09505423_v25_n4_p435_TOLABA
record_format dspace
spelling paper:paper_09505423_v25_n4_p435_TOLABA2023-06-08T15:54:41Z Desorption isotherms of shelled maize: whole, dehulled and hulls BET equation isosteric heat of desorption sorption thermodynamics Water vapour desorption isotherms of whole kernel maize were determined at 40, 50 and 60°C, and those of dehulled kernels and hulls at 50 and 60°C. It was found that while whole and dehulled kernels show similar equilibrium moisture contents, the hull gives lower values. Equilibrium data were modelled with two‐parameter equations. It was found that the Henderson equation is best for describing the equilibrium data for whole kernels, while the Halsey equation was more appropriate for hulls. A simple semi‐theoretical equation was used to model the effect of temperature on the equilibrium values of whole maize kernels for the three temperatures investigated. BET heats of desorption and the isosteric heat curves were calculated for whole kernels and hull. It was found that the BET heat values correlate quite well with the isosteric heat values at the monolayer moisture content. Copyright © 1990, Wiley Blackwell. All rights reserved 1990 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v25_n4_p435_TOLABA http://hdl.handle.net/20.500.12110/paper_09505423_v25_n4_p435_TOLABA
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic BET equation
isosteric heat of desorption
sorption thermodynamics
spellingShingle BET equation
isosteric heat of desorption
sorption thermodynamics
Desorption isotherms of shelled maize: whole, dehulled and hulls
topic_facet BET equation
isosteric heat of desorption
sorption thermodynamics
description Water vapour desorption isotherms of whole kernel maize were determined at 40, 50 and 60°C, and those of dehulled kernels and hulls at 50 and 60°C. It was found that while whole and dehulled kernels show similar equilibrium moisture contents, the hull gives lower values. Equilibrium data were modelled with two‐parameter equations. It was found that the Henderson equation is best for describing the equilibrium data for whole kernels, while the Halsey equation was more appropriate for hulls. A simple semi‐theoretical equation was used to model the effect of temperature on the equilibrium values of whole maize kernels for the three temperatures investigated. BET heats of desorption and the isosteric heat curves were calculated for whole kernels and hull. It was found that the BET heat values correlate quite well with the isosteric heat values at the monolayer moisture content. Copyright © 1990, Wiley Blackwell. All rights reserved
title Desorption isotherms of shelled maize: whole, dehulled and hulls
title_short Desorption isotherms of shelled maize: whole, dehulled and hulls
title_full Desorption isotherms of shelled maize: whole, dehulled and hulls
title_fullStr Desorption isotherms of shelled maize: whole, dehulled and hulls
title_full_unstemmed Desorption isotherms of shelled maize: whole, dehulled and hulls
title_sort desorption isotherms of shelled maize: whole, dehulled and hulls
publishDate 1990
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v25_n4_p435_TOLABA
http://hdl.handle.net/20.500.12110/paper_09505423_v25_n4_p435_TOLABA
_version_ 1768543380271267840

Ejemplares similares