Effect of Different Predrying Treatments on Physicochemical Quality and Drying Kinetics of Twin Layer Solar Tunnel Dried Tomato (Lycopersicon esculentum L.) Slices

Table 3

Change in color values of dried tomato slices pretreated with different predrying treatments.

Predrying treatments	ΔE	Δchroma	Δh^0	ΔL
AA	16.61	4.88	5.7	14.69
CA	11.37	6.44	−2.22	5.35
SC	18.387	11.77	5.05	13.53
CC	17.837	8.13	9.92	15.10
CO	17.68	1.86	5.07	17.38

∆L Lo-L; ΔE total color difference; Δh⁰ h⁰0-h⁰; Δchroma chroma fresh sample-chroma dry sample. L₀ brightness of the fresh sample; L brightness of the dry sample; h⁰₀: hue angle of the fresh sample; h⁰ hue angle of the dry sample. Δchroma change in chroma; Δh change in hue; ΔL change in lightness. (All the changes were measured relative to the fresh samples, i.e., fresh-dry.)