3.4.3. Color
According to Table 6, therewas no significant color change in the
cookies during the 15 days of storage. However, as noted by Singh
and Mohamed (2007), the red (a*) and yellow (b*) color values
increased with the addition of WPC, and the brightness value (L*)
generally decreased. All treatments had a tendency to darken (L*),
but there was no significant difference among them. Furthermore,
the three treatments had red (parameter a*) and yellow (parameter
b*) colors, which are expected in products such as baked cookies
from the caramelization of sugar and the Maillard reaction.