Table 2.
Intra- and Inter-day variation of the investigated compounds
| Analytes | Concentration (μg/mL) | Intra-day RSD (%, n = 6) | Inter-day RSD (%, n = 6) |
|---|---|---|---|
| Hypaphorine |
80.0 |
2.2 |
2.0 |
| 24.0 |
1.2 |
2.4 |
|
| 8.0 |
3.2 |
4.6 |
|
| THSG |
872.0 |
1.5 |
1.4 |
| 261.6 |
0.6 |
2.1 |
|
| 87.2 |
1.8 |
3.1 |
|
| Epicatechin |
80.0 |
1.1 |
2.0 |
| 24.0 |
0.6 |
1.8 |
|
| 8.0 |
1.6 |
3.2 |
|
| Proanthocyanidin B2 |
80.0 |
1.1 |
2.6 |
| 24.0 |
1.4 |
1.5 |
|
| 8.0 |
1.9 |
1.4 |
|
| Proanthocyanidin B1 |
82.4 |
1.2 |
4.0 |
| 24.7 |
1.6 |
1.5 |
|
| 8.2 |
2.0 |
2.7 |
|
| Catechin |
80.0 |
0.9 |
3.0 |
| 24.0 |
1.4 |
1.5 |
|
| 8.0 |
2.4 |
3.4 |
|
| Gallic Acid | 104.0 |
1.1 |
4.4 |
| 31.2 |
2.2 |
3.0 |
|
| 10.4 | 2.0 | 4.5 |