TABLE 1.

Effect of steaming and sulfur fumigation treatment on the whiteness of Gastrodia elata starch.

Sample	L	a	b	Whiteness
NSt-NSf	54.73 ± 0.06d	6.07 ± 0.12a	15.70 ± 0.10b	51.71 ± 0.09c
NSt-Sf	60.77 ± 0.23b	4.00 ± 0.44b	16.17 ± 0.32a	57.38 ± 0.33b
St-NSf	60.40 ± 0.17c	4.03 ± 0.15b	16.23 ± 0.15a	57.01 ± 0.22b
St-Sf	62.40 ± 0.20a	4.50 ± 0.30b	15.10 ± 0.27c	59.23 ± 0.20a

The values are expressed as the mean ± standard deviation of triplicate experiments. Values in the same column with different letters indicate significant differences (P < 0.05).

NSt-NSf, nonsteam and nonsulfur fumigation treatment; NSt-Sf, nonsteam and sulfur fumigation treatment; St-NSf, steam and nonsulfur fumigation treatment; St-Sf, steam and sulfur fumigation treatment; L, Luminosity; a, the range of red to green; b, the range of yellow to blue.