TABLE 3.
The contents of free amino acid components in jade (BT0), medium-baked (BT1), and deep-baked (BT2) Tieguanyin oolong teas.
| Content (μg/g) | BT0 | BT1 | BT2 |
| Aspartate | 1,047.4 ± 54.8a | 893.8 ± 255.3a | 576.8 ± 61.0b |
| Threonine | 576.1 ± 34.5a | 456.5 ± 64.6b | 232.2 ± 17.2c |
| Serine | 1,447.7 ± 29.7a | 1,107.9 ± 121.7b | 508.8 ± 55.5c |
| Asparagine | 436.5 ± 32.2a | 385.9 ± 167.5a | 21.0 ± 3.2b |
| Glutamic acid | 3,266.5 ± 211.5a | 2,044.9 ± 226.0b | 1,066.7 ± 33.7c |
| Theanine | 18,030.3 ± 2,679.5a | 11,112.8 ± 1,612.5b | 4,382.8 ± 214.4c |
| Glycine | 94.7 ± 4.5a | 80.5 ± 4.7b | 51.9 ± 1.2c |
| Alanine | 1,258.8 ± 45.8a | 1,064.3 ± 85.3b | 564.4 ± 7.9c |
| Valine | 628.1 ± 35.0a | 487.6 ± 60.6b | 270.9 ± 6.2c |
| Cystine | 96.5 ± 6.1a | 67.2 ± 7.4b | 21.5 ± 1.5c |
| Isoleucine | 113.6 ± 14.1a | 84.0 ± 22.3b | 36.4 ± 3.8c |
| Leucine | 146.2 ± 17.2a | 107.8 ± 22.9a | 52.3 ± 0.3b |
| Tyrosine | 305.0 ± 4.6a | 243.6 ± 39.2b | 124.7 ± 17.3c |
| Phenylalanine | 158.5 ± 17.3a | 142.7 ± 11.5a | 112.3 ± 6.0b |
| β-Aminoisobutyric acid | 257.0 ± 68.9a | 191.7 ± 32.2a | 77.7 ± 6.2b |
| γ-Aminobutyric acid | 178.8 ± 10.5a | 112.4 ± 20.4a | 49.3 ± 3.6b |
| Lysine | 223.0 ± 19.4a | 198.3 ± 19.9a | 90.7 ± 15.7b |
The same letter within each row indicates no significant difference (P > 0.05).