Articles

HYGROSCOPIC FEATURES OF CEREUS SQUAMOSUS FLOUR

Article number
811_18
Pages
155 – 161
Language
English
Abstract
The moisture adsorption isotherms and the isosteric heat of adsorption for the facheiro (Cereus squamosus) flour dried at 60°C were determined in the present work.
The isotherms of flour were obtained at the temperatures of 10, 20, 30 and 40°C, by means of gravimetric static method, using satured salt solutions.
The GAB, Oswin, Halsey and D’arcy-Watt models were fitted to the experimental data by the nonlinear regression analysis method.
The isosteric heat of adsorption was calculated by means of Clausius-Clayperon and Sopade and Ajisegiri equations.
According to the results, the D’Arcy-Watt model presented the best fit and the Sopade and Ajisegiri represented the isosteric heat of adsorption.

Publication
Authors
E.E. Lima, R.M.F. Figueirêdo, A.J.M. Queiroz, A.S. Silva
Keywords
facheiro, drying, isotherms
Full text
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