2.4.2. Colour

Surface colour determination (CIE-LAB tristimulus values, lightness, L\*; redness, a\* and yellowness, b\*) was evaluated (Konica Minolta CM-3500d colorimeter. Konica Minolta, Madrid, Spain) on cross-sections of the samples. For each type of frankfurter, 10 determinations were carried out.
