Color degradation kinetics of carrot (daucus carota L.) slices during hot air drying

Abstract

The effect of temperature on color change kinetics of carrot slices was investigated during hot air drying. The color parameters for the color change of the foods were quantified by Hunter L (whiteness/darkness), a (redness/greenness) and b (yellowness/blueness) values. These values were also used for calculation of the total color change (?E). The color values (L, a and b) decreased, while ?E increased during drying. Zero- and first-order kinetic models were applied to describe color change. Mathematical modeling color change kinetics indicated that both models were found to describe the L, a and b values adequately. However, ?E followed zero-order kinetics. © 2015 Wiley Periodicals, Inc.