Determination and correlation of the water activity of unsaturated, supersaturated and saturated trehalose solutions

Abstract: The water activity (aw) of unsaturated and supersaturated trehalose solutions (and some sucrose solutions) was determined using a dew point hygrometer, and correlated using an equation originally proposed by Norrish [1966. An equation for the activity coefficients and equilibrium relative...

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Detalles Bibliográficos
Autores principales: Galmarini, Mara Virginia, Chirife, Jorge, Zamora, María Clara, Pérez, A.
Formato: Artículo
Lenguaje:Inglés
Publicado: Elsevier 2022
Materias:
AGUA
SOLUBILIDAD
SACAROSA
TREHALOSA DIHIDRATO
Acceso en línea:https://repositorio.uca.edu.ar/handle/123456789/14990
Aporte de:
Repositorio Institucional de la Universidad Católica Argentina (UCA) de Universidad Católica Argentina
id I33-R139-123456789-14990
record_format dspace
institution Universidad Católica Argentina
institution_str I-33
repository_str R-139
collection Repositorio Institucional de la Universidad Católica Argentina (UCA)
language Inglés
topic AGUA
SOLUBILIDAD
SACAROSA
TREHALOSA DIHIDRATO
spellingShingle AGUA
SOLUBILIDAD
SACAROSA
TREHALOSA DIHIDRATO
Galmarini, Mara Virginia
Chirife, Jorge
Zamora, María Clara
Pérez, A.
Determination and correlation of the water activity of unsaturated, supersaturated and saturated trehalose solutions
topic_facet AGUA
SOLUBILIDAD
SACAROSA
TREHALOSA DIHIDRATO
description Abstract: The water activity (aw) of unsaturated and supersaturated trehalose solutions (and some sucrose solutions) was determined using a dew point hygrometer, and correlated using an equation originally proposed by Norrish [1966. An equation for the activity coefficients and equilibrium relative humidities of water in confectionery syrups. Journal of Food Technology, 1,25] for predicting water activity in binary non-electrolyte solutions. The aw lowering behaviour of trehalose was found to be almost identical to that of sucrose solutions at same concentrations; however, due to the lower solubility of trehalose the aw of their saturated solutions is higher than that of sucrose ones. The aw of saturated trehalose solutions at 20, 25, 30, 35 and 40 °C was also determined and found to be between 0.953 and 0.928. These values agreed well with predictions made using aw data for trehalose solutions calculated at the solubility concentration at the various temperatures.
format Artículo
author Galmarini, Mara Virginia
Chirife, Jorge
Zamora, María Clara
Pérez, A.
author_facet Galmarini, Mara Virginia
Chirife, Jorge
Zamora, María Clara
Pérez, A.
author_sort Galmarini, Mara Virginia
title Determination and correlation of the water activity of unsaturated, supersaturated and saturated trehalose solutions
title_short Determination and correlation of the water activity of unsaturated, supersaturated and saturated trehalose solutions
title_full Determination and correlation of the water activity of unsaturated, supersaturated and saturated trehalose solutions
title_fullStr Determination and correlation of the water activity of unsaturated, supersaturated and saturated trehalose solutions
title_full_unstemmed Determination and correlation of the water activity of unsaturated, supersaturated and saturated trehalose solutions
title_sort determination and correlation of the water activity of unsaturated, supersaturated and saturated trehalose solutions
publisher Elsevier
publishDate 2022
url https://repositorio.uca.edu.ar/handle/123456789/14990
work_keys_str_mv AT galmarinimaravirginia determinationandcorrelationofthewateractivityofunsaturatedsupersaturatedandsaturatedtrehalosesolutions
AT chirifejorge determinationandcorrelationofthewateractivityofunsaturatedsupersaturatedandsaturatedtrehalosesolutions
AT zamoramariaclara determinationandcorrelationofthewateractivityofunsaturatedsupersaturatedandsaturatedtrehalosesolutions
AT pereza determinationandcorrelationofthewateractivityofunsaturatedsupersaturatedandsaturatedtrehalosesolutions
bdutipo_str Repositorios
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