PROBIEN 20416
INSTITUTO DE INVESTIGACION Y DESARROLLO EN INGENIERIA DE PROCESOS, BIOTECNOLOGIA Y ENERGIAS ALTERNATIVAS
Unidad Ejecutora - UE
artículos
Título:
Comparison of Drying Kinetics for Small Fruits With and Without Particle Shrinkage Considerations
Autor/es:
CARLOS ALBERTO MÁRQUEZ AND ANTONIO DE MICHELIS
Revista:
JOURNAL OF FOOD ENGINEERING
Referencias:
Año: 2009
ISSN:
0260-8774
Resumen:
Experimental values of volume and
area changes for sweet (Prunus avium) and sour(Prunus
cerasus) cherry and
rose hips (Rosa rubiginosa), measured in previous works were analyzed
to propose generalized correlations for the three fruits which predicted with
low errors. The correlation developed is lineal and the highest errors were
observed for fruit moisture contents corresponding to storage stability values.
The shape factors were measured for the fruits, which were close to spherical values
as the fruits dehydrate. This would enable the assumption of spherical shape to
calculate characteristic dimensions used in modeling. Moreover, the predictions
of kinetic models were compared with experimental data for three radii: the
initial, assumed constant; variable, estimating the radius with the
correlations published for each fruit, and variable, calculating the radius
with the generalized correlation developed in this work. The average percentage
errors between the experimental data and the predictions by the kinetic model
were between 92.1 and 156.2; 5.4 and 11.7 and 1.1 and 10.7, respectively.
