Table 3. Color of ginger powder according to the number of steam-drying treatments

Color	Number of steam drying treatments				F-value
	0	3	6	9
L*	68.59±0.331)d2)	52.78±0.17c	50.82±0.09b	50.14±0.76a	8,448.93***3)
a*	3.63±0.13a	5.54±0.03b	6.85±0.17c	7.26±0.11d	3,528.92***
b*	33.97±0.31c	27.94±0.31a	28.33±0.46b	28.38±0.43b	1,123.65***

All values are mean±SD (n=10).
Different superscripts (^a-d) in the same row indicate significant differences by Duncan’s multiple range test (p<0.05).
^***p<0.001.