Quality analysis
(a) Measurement of colour
Figures 9 and 10 show the measured results of color of dried shrimp with 1-
stage and 2-stage drying strategies. The experimental results for all drying conditions
concluded that in case of drying with 1 stage and 2 stage strategies, higher drying
temperatures tended to decrease the total color difference of samples (ÄE), dried shrimp
with combined infrared heat radiation and hot air convection significantly enhance the
redness value (Hunter a-value) of the shrimp. However, from Figures 9 and 10, the
brightness value (Hunter L-value) of dried shrimp with 1-stage hot air drying was higher
than that found when combined infrared heat radiation and hot air convection were
used.