Paul and Mittal (1996) examined how the degradation
of oil during frying of canola aected the colour of
the fried product. They noted high correlations between
the colour parameters and oil degradation during frying.
Kozempel, Tomasula, and Craig (1995) developed a
simulator for food processes such as blanching, drying
and frying of potatoes. The model was also used to
control the colour of fried potatoes. Khalil (1999), examined
the quality of french fried potatoes as in¯uenced
by the coating with hydrocolloids. They noted that
coated french fries exhibited higher red and yellow colours