with illuminant D65, 2° observer was used to measure the colour of raw burgers from the FBSM and RBM lots before freezing. The colorimeter was calibrated with a white calibration board (X = 82.81, Y = 87.09, and Z = 91.50). For each mincing machine, six readings of lightness (L), hue-angle (H) and chroma (C), one per burger randomly selected, were obtained. An increase in hue-angle indicates a shift in colour from red towards the yellow spectrum. An increase in chroma value indicates a movement away from a greyish colour towards the red spectrum.