Table 2.
Changes of color value in dried Aronia melanocarpa by different drying process

time (hr)	Vacuum freeze dry			Hor air dry			Cold air dry
	L*	a*	b*	L*	a*	b*	L*	a*	b*
	0	34.69 ± 0.61	0.59 ± 0.10	-0.41 ± 0.01	34.69 ± 0.61	0.59 ± 0.10	-0.41 ± 0.01	34.69 ± 0.61	0.59 ± 0.10	-0.41 ± 0.01
24				34.10 ± 0.78	0.48 ± 0.09	-0.65 ± 0.05	33.49± 0.28	0.63 ± 0.02	-0.42 ± 0.03
36				34.13 ± 0.56	0.44 ± 0.09	-0.65 ± 0.08	33.65 ± 0.21	0.68 ± 0.07	-0.40 ± 0.02
48				34.36 ± 0.23	0.23 ± 0.06	-0.55 ± 0.05	33.77 ± 0.06	0.72 ± 0.13	-0.39 ± 0.02
60				34.65 ± 0.21	0.17 ± 0.04	-0.52 ± 0.04	33.86 ± 0.24	0.75 ± 0.13	-0.36 ± 0.07
72	35.24 ± 0.39	0.81 ± 0.18	-0.39 ± 0.07				33.95 ± 0.26	0.80 ± 0.04	-0.35 ± 0.04
84							34.06 ± 0.37	0.90 ± 0.17	-0.34 ± 0.08
96							34.32 ± 0.08	0.92 ± 0.08	-0.34 ± 0.02
108							34.39 ± 0.28	0.94 ± 0.20	-0.32 ± 0.06
120							34.45 ± 0.15	0.95 ± 0.06	-0.31 ± 0.06
132							34.64 ± 0.06	0.96 ± 0.16	-0.30 ± 0.01
144							34.66 ± 0.20	0.97 ± 0.10	-0.30 ± 0.05
156							34.82 ± 0.19	1.03 ± 0.11	-0.30 ± 0.04