Table 3. Color changes of ozone-treated wheat flour.

Exposure time (min)	L*	a*	b*
0	93.64 ± 0.12a	0.42 ± 0.02a	6.70 ± 0.02a
30	94.25 ± 0.02b	0.39 ± 0.00b	6.38 ± 0.05bc
60	94.23 ± 0.11b	0.36 ± 0.01c	6.27 ± 0.10c
90	94.18 ± 0.04b	0.38 ± 0.02bc	6.40 ± 0.09b

Values are presented as means ± standard deviations (n = 3). Values with different letters are significantly different (P < 0.05).