Table 3.
Contents of GLYP, GLUF, AMPA, and MPPA in tea infusions determined with CE-C4D and the reference methods.
| ID | Sample type | Origin | GLYP (µg/L) | MPPA (µg/L) | GLUF (µg/L) | AMPA (µg/L) |
|---|---|---|---|---|---|---|
| TX1 | Green tea | VN | - | - | 45.1 ± 2.53 | - |
| TX2 | Green tea | VN | - | - | - | - |
| TX3 | Green tea | VN | - | - | 53.9 ± 3.02 | - |
| TX4 | Green tea | England | - | - | 52.5 ± 2.94 | - |
| TX5 | Green tea | Russia | - | - | - | - |
| TD1 | Black tea | VN | - | - | - | - |
| TD2 | Black tea | VN | - | - | - | - |
| TD3 | Black tea | Sri Lanka | - | - | - | - |
| TD4 | Black tea | England | - | - | - | - |
| TD5 | Black tea | Russia | - | - | - | - |
| TD6 | Black tea | VN | - | - | - | - |
| TD7 | Black tea | England | - | - | - | - |
| TOL1 | Oolong tea | VN | - | - | - | - |
| TOL2 | Oolong tea | VN | - | - | - | - |
| TOL3 | Oolong tea | VN | 5.34 ± 0.33 | - | - | - |
| TOL4 | Oolong tea | Taiwan | 10.74 ± 0.67 | - | - | - |