Fig. 6. (a) L values vs. NaCl concentration of the soaking solution of
fried potato slices. Blanching 70 1C 5 min, soaking 5 min, frying 180 1C
3.3 min. Different letters indicate significative differences ðPp0:05Þ:
among NaCl concentration (small letters). (b) Average differences after
frying in L values between originally adjacent faces of slices soaked either
in water or in NaCl solution vs. NaCl concentration of the soaking
solution. Error bars indicate standard error of the mean. Values not
sharing the same superscript (small letters) are different at 95% confidence
level using Tukey’s criterion.