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Advisor(s)
Abstract(s)
In this study, the drying kinetics, e ff ective
moisture di ff usivity (D e ff ) , speci fi c energy consumption
( SEC ) , colour, and shrinkage (S b ) of pomegranate arils
were compared when dried by convective ( CV ) drying
and microwave ( MW ) drying. The experiments were per -
formed at air temperature of 50, 60, and 70°C and air
velocity of 1 m/s for CV drying and 270, 450, and 630 W
for MW drying. The results showed that increasing air
temperature and MW power increased the D e ff. The cal -
culations demonstrated that the maximum D e ff for pome -
granate arils was obtained for MW drying ( 630 W ) .
Maximum SEC for pomegranate arils in the CV dryer
was 145.12 kWh/kg, whereas in the MW dryer was
35.42 kWh/kg. In MW dryer, the lowest values of colour
change and shrinkage were 6.77 and 50.5%, respec -
tively. Comprehensive comparison of the di ff erent drying
methods ( MW and CV ) revealed that MW drying had best
drying performance for pomegranate arils, considering the
drying time, e ff ective moisture di ff usion, SEC, colour, and
shrinkage
Description
Keywords
Color Energy Convective drying Microwave drying Pomegranate Shrinkage
Citation
Kaveh M, Golpour I, Gonçalves JC, Ghafouri S, Guiné RPF. (2021) Determination of drying kinetics, speci fi c energy consumption, shrinkage, and colour properties of pomegranate arils submitted to microwave and convective drying. Open Agriculture, 6(1), 230-242.