Table 1.

Extraction yield of theaflavin and thearubigins

Solvents	Time			Means
	30 min	60 min	90 min
Theaflavin (g/100 g black tea)
Ethanol	3.11 ± 0.20	4.05 ± 0.19	3.12 ± 0.10	3.42 ± 0.27a
Methanol	2.05 ± 0.16	3.25 ± 0.15	3.01 ± 0.08	2.77 ± 0.25b
Water	1.99 ± 0.04	2.95 ± 0.19	2.02 ± 0.04	2.32 ± 0.13c
	2.38 ± 0.1c	3.41 ± 0.1a	2.71 ± 0.1b
Thearubigins (g/100 g black tea)
Ethanol	12.11 ± 0.20	15.32 ± 0.19	12.12 ± 0.10	13.18 ± 1.07a
Methanol	11.05 ± 0.16	13.25 ± 0.15	12.01 ± 0.08	12.10 ± 1.05b
Water	8.99 ± 0.04	10.95 ± 0.19	9.32 ± 0.04	9.75 ± 0.42c
	10.71 ± 0.4b	13.17 ± 0.5a	11.15 ± 0.9c

Values are mean ± SD. Values in same column within each parameter with different letters were significantly different from each other (p ≤ 0. 05)