Table 5
Color change of sliced ginseng depending on different drying methods

Treatment	Color	Type of drying
		FIR drying1)	Hot air drying1)	Vacuum drying1)	Freeze drying2)
		Before drying	L	30.89±0.953)^c4)	26.95±0.69^a	27.39±1.67^a	29.75±2.49^b
a	9.23±0.30^b		8.29±0.63^a	8.15±0.43^a	9.37±1.27^b
b	15.74±0.93^c		13.71±0.92^a	13.72±1.31^a	14.86±2.60^b
After drying	L	24.47±.68^b	22.30±0.39^a	39a 22.73±0.49^a	31.17±4.10^c
	a	4.95±0.53^b	5.54±0.44^c	3.25±0.26^a	11.98±1.98^d
	b	7.10±1.01^ab	8.12±0.75^b	5.73±0.98^a	17.90±4.25^c
ΔE		11.67	7.8	10.56	4.52

Drying temperature, 65℃; Drying time, 60 min.
Drying temperature, -65℃; Drying time, 60 min.
Values are mean<SD of 6 times determinations.
Means with in a row followed by the same letters are not significantly different based on Duncan’s multiple range (p<0.05).