In:
Journal of Chemistry, Hindawi Limited, Vol. 2015 ( 2015), p. 1-11
Abstract:
The purpose of this study was to evaluate the effect of dehydration conditions on the chemical, physical, and rehydration properties of instant whole beans ( Phaseolus vulgaris L. var. Azufrado) using a 2 2 factorial design (air temperature: 25°C and 30°C, air velocity: 0.5 m/s and 1.0 m/s). To determine the kinetic parameters, the rehydration data were fitted to three models: Peleg’s, First Order, and Sigmoid. The protein, fat, and ash contents of the beans were not significantly affected ( P 〉 0.05 ) by the dehydration conditions. Of the 11 physical properties of the instant whole beans, only water activity and splitting were significantly affected by dehydration conditions ( P 〈 0.05 ), with a range from 0.58 to 0.67 and from 2.90% to 5.87%, respectively. Of the three models tested, the First Order model gave the best fit for rehydration, with no significant differences ( P 〉 0.05 ) between the observed and predicted equilibrium moisture contents of the instant whole beans. Regarding the rehydration kinetics for the instant whole beans, the activation energy values ranged from 23.56 kJ/mol to 30.48 kJ/mol, depending on the dehydration conditions. The dehydration conditions had no significant effect ( P 〉 0.05 ) on the rehydration properties of instant whole beans.
Type of Medium:
Online Resource
ISSN:
2090-9063
,
2090-9071
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2015
detail.hit.zdb_id:
2393625-3
detail.hit.zdb_id:
2703077-5
Permalink