The colors of MVD and
AD samples showed a different behavior. The air dried apple chips
were the darkest and characterized by stronger redness compared
to freeze dried samples. Whereas the lightness, the yellowness and
chroma values after the MVD application increased in comparison
to the VI apple slice, the b*, chroma values and the hue of air dried
material were strongly reduced. The measured hue of apple
polyphenol enriched Braeburn slices was not significantly influenced
after MVD, when compared to the VI apple slice