CONICET | Buscador de Institutos y Recursos Humanos

The characteristic color of translucent liquid foods is defined as the color values at infinite depth, where the liquid depth and the background effects are surpassed. A measurement cell with variable depth was built, and the L*a*b* color was measured from digital images. Color versus depth was fitted to an exponential equation, from which the characteristic color was obtained. Thirteen different liquids were tested with this methodology and compared with spectrophotometer measurements. The average total color difference between approaches was 50.85±18.89. Image analysis led to more realistic predictions, a high correlation between Hue angle values was obtained for most samples, with the exception of only one.