Table 3.

Bitterness score and contribution of theasinensin A(TSA) in tea soups.

Item	Black tea soup			Oolong tea soup			Green tea soup
	Qimen	Dian	Hainan	Anxi	Dahongpao	Rougui	Biluochun	Maojian	Longjing
Bitterness score of TSA	0.64 ± 0.01 b	0.92 ± 0.04 a	0.43 ± 0.01 c	0.00 ± 0.00 e	0.36 ± 0.02 d	0.02 ± 0.00 f	0.00 ± 0.00 g	0.00 ± 0.00 g	0.00 ± 0.00 g
Bitterness score ratio of TSA to tea soup (%)	42.62 ± 1.32 b	83.64 ± 4.16 a	24.04 ± 0.56 c	1.85 ± 0.12 e	15.84 ± 0.87 d	1.26 ± 0.05 f	0.00 ± 0.00 g	0.00 ± 0.00 g	0.00 ± 0.00 g

Score of TSA in tea soups was calculated by the TSA bitterness regression equation of section 3.2. Different letters in the same row indicate significant differences between mean values (p < 0.05).