WATER ADSORPTION AND DESORPTION ISOTHERMS ON MILK POWDER: II. WHOLE MILK

WATER ADSORPTION AND DESORPTION ISOTHERMS ON MILK POWDER: II. WHOLE MILK

The aim of this research was the determination of adsorption and desorption isotherms of cow whole milk powder. The experiments have been carried out at 15, 25 and 40 ºC, in ranges of moisture and water activity characteristic of normal conditions in which the processes of drying, packaging and stor...

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Bibliographic Details
Main Authors: Edgar M. Soteras, Julio Gil, Paola Yacanto, Silvana Muratona, Clidia Abaca, María G. Sustersic
Format: Article
Language:Spanish
Published: Executive Business School 2014-03-01
Series:Avances en Ciencias e Ingeniería
Subjects:
water activity
isotherm
whole milk
isosteric heat
Online Access:http://www.exeedu.com/publishing.cl/inicio.php?lnk=ctnd&id=286
Description
Summary:The aim of this research was the determination of adsorption and desorption isotherms of cow whole milk powder. The experiments have been carried out at 15, 25 and 40 ºC, in ranges of moisture and water activity characteristic of normal conditions in which the processes of drying, packaging and storage are developed. By studying the influence of the temperature on the experimental plots, the isosteric adsorption heat was determined. Experimental data were correlated to the referential model of Guggenheim, Anderson and Boer (GAB). For both, adsorption and desorption, a good model fit was observed. The isotherms showed very similar shapes between them and, by comparing adsorption and desorption isotherms, the phenomenon of hysteresis was confirmed.
ISSN:0718-8706
0718-8706

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