Table 2
Changes of color values of bracken and Aster scaber dr ied by different methods

Samples	Drying methods¹⁾	Values
Samples	Drying methods¹⁾	L^*	a^*	b^*
Bracken	Sun-drying	12.81±1.57^a2)	1.33±0.78^a	1.91±1.10^a
	Hot-air-drying	9.83±1.01^a	-0.85±0.44^a	-0.20±1.06^a
	Freeze-drying	29.48±4.36^b	1.70±3.47^a	6.50±2.47^b
Aster scaber	Sun-drying	9.68±4.35^a	0.14±1.19^c	3.45±1.08^a
	Hot-air-drying	14.00±2.12^a	-1.66±0.26^b	5.34±1.09^a
	Freeze-drying	32.73±1.55^b	-6.78±1.14^a	15.42±1.21^b

Sun drying, dried at 25℃ and RH 65% for 48 hr; Hot-air drying, dried in drying oven at 50℃ for 14 hr; Freeze-drying, freeze-dried by vacuum freeze dryer.
Means with different small letters (a-c) in the same column are significantly different at p<0.05 by Duncan's multiple range test.