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. 2021 Dec 2;12:100178. doi: 10.1016/j.fochx.2021.100178

Table 1.

The main taste components of oolong tea.

Chemicals Content (mg/g)
BT1 BT3 BT5 AHT
GA 0.227 ± 0.004c 0.252 ± 0.011b 0.282 ± 0.003a 0.392 ± 0.022*
C 0.714 ± 0.002a 0.727 ± 0.008a 0.722 ± 0.013a 0.747 ± 0.033 ns
GC 2.673 ± 0.143c 3.156 ± 0.078b 3.376 ± 0.060a 4.300 ± 0.095***
GCG 0.479 ± 0.010b 0.502 ± 0.044ab 0.539 ± 0.005a 0.854 ± 0.054**
EC 7.221 ± 0.174a 7.073 ± 0.356a 6.829 ± 0.148a 6.138 ± 0.148**
EGC 35.690 ± 0.049a 35.431 ± 1.031a 33.957 ± 0.167b 30.365 ± 0.427***
ECG 11.802 ± 0.671a 12.276 ± 0.420a 11.692 ± 0.116a 11.762 ± 0.340 ns
EGCG 55.385 ± 0.237ab 56.239 ± 1.611a 53.441 ± 0.641b 52.325 ± 0.886 ns
THB 0.170 ± 0.004a 0.173 ± 0.011a 0.184 ± 0.005a 0.174 ± 0.004 ns
Caffeine 24.637 ± 0.062a 25.506 ± 0.757a 25.222 ± 0.159a 25.363 ± 0.487 ns
l-theanine 1.657 ± 0.558b 3.923 ± 1.460a 3.726 ± 0.039a 0.715 ± 0.016***

Data are means (±SD) of three replicates.

BT1/3/5 represented the oolong tea samples roasted for 1/3/5 h respectively; AHT represented the oolong tea sample after the aroma-enhancing treatment.