Table 3.

Effects of light sources on contents of theaflavins in black tea (mg/g)(mean ± SD)

Treatment	TF1	TF2A	TF3	TF2B	Total content
Dark	0.22 ± 0.03ab	0.41 ± 0.01cd	0.20 ± 0.003d	0.10 ± 0.002c	0.92 ± 0.01cd
Ultraviolet light	0.20 ± 0.01bc	0.39 ± 0.02d	0.19 ± 0.04d	0.09 ± 0.005c	0.87 ± 0.07d
Yellow light	0.24 ± 0.01a	0.49 ± 0.02ab	0.34 ± 0.01a	0.12 ± 0.005ab	1.20 ± 0.04a
Blue light	0.24 ± 0.01a	0.48 ± 0.01ab	0.28 ± 0.02c	0.12 ± 0.007ab	1.13 ± 0.02ab
Purple light	0.21 ± 0.02ab	0.45 ± 0.03bc	0.30 ± 0.01abc	0.12 ± 0.01b	1.08 ± 0.06b
White light	0.17 ± 0.002c	0.32 ± 0.004e	0.12 ± 0.001e	0.08 ± 0.001d	0.67 ± 0.01e
Orange light	0.23 ± 0.02a	0.51 ± 0.04a	0.33 ± 0.02ab	0.13 ± 0.01a	1.16 ± 0.02ab
Red light	0.23 ± 0.003a	0.48 ± 0.03ab	0.29 ± 0.05bc	0.12 ± 0.01ab	1.13 ± 0.08ab
Cyan light	0.23 ± 0.02a	0.49 ± 0.04ab	0.32 ± 0.03abc	0.13 ± 0.01ab	1.16 ± 0.10ab
Green light	0.23 ± 0.01a	0.45 ± 0.003bc	0.21 ± 0.001d	0.12 ± 0.01b	0.99 ± 0.01c
Significance	**	**	**	**	**

SD standard deviation

*, ** indicate p < 0.05, and 0.01, respectively; each value was the average of three different samples; mean values with the same lowercase letters in the same column indicate no significant difference at p = 0.01 or 0.05