Table 3.

CIE color parameters (L^∗, a^∗, and b^∗) of GT powder after gamma irradiation.

Gamma dose (kGy)	CIE color parameter
	a ∗	b ∗	L ∗
Control	2.18 ± 0.02h	9.56 ± 0.03i	86.65 ± 0.07a
2.5	2.33 ± 0.04gh	11.48 ± 0.06h	85.62 ± 0.06b
5	2.42 ± 0.05g	12.48 ± 0.25g	85.36 ± 0.12b
10	2.69 ± 0.02f	14.74 ± 0.21f	84.43 ± 0.09c
20	3.13 ± 0.02e	17.35 ± 0.06e	83.26 ± 0.07d
100	6.13 ± 0.12d	26.69 ± 0.41d	77.31 ± 0.24e
500	7.75 ± 0.05c	30.57 ± 0.25c	74.22 ± 0.16f
1000	9.83 ± 0.11b	32.72 ± 0.34b	70.58 ± 0.11g
2000	12.62 ± 0.22a	34.17 ± 0.34a	64.32 ± 0.31h

Note: Mean ± SD values with different lowercase superscripts in same column are significantly different (p < 0.05).