For each sample, eight consecutive measurements were taken on
different areas of the surface of five different slices. Color coordinates
for bleached tomato pomace were also measured to examine its effect
on the color of studied products. The L*, a* (±red − green) and b*
(±yellow − blue) color coordinates were determined according to
the ISO/CIE standard color space system proposed by Commission
Internationale de l'Eclairage (Joint ISO/CIE Standard, 2008). In addition,
hue-angle (h°) and the saturation index or chroma (C*), which
describes the hue and brightness or vividness of color, respectively,
were calculated using the following Eqs. (3) and (4):