The kinetics of color formation of potato slices during frying at four different oil temperatures was followed by the parameter total color change (DE) which was calculated in the following way DE ¼ ððL
0 LÞ2 þ ða
0 aÞ2þ
ðb
0 bÞ2Þ1=2. The L*a*b* values correspond to the values
of potatoes slices fried at different frying times and the values
of L
0a
0b
0 corresponds to the raw potato (frying time
zero). Experimental data of chip color changes DE was fitted
to the following empirical relationship: