Table 3 Recovery of the investigated analytes
Analytes | Original (μg) | Spiked (μg) | Found (μg) | Recoverya)(%) | RSD (%) |
|---|---|---|---|---|---|
Hypaphorine | 334.6 | 250.0 | 588.4 | 101.5 | 2.5 |
THSG | 8215. 6 | 763.0 | 8998.3 | 102.6 | 2.5 |
Epicatchin | 31.2 | 25.0 | 57.3 | 104.2 | 0.7 |
Proanthocyanidin B2 | 90.6 | 100.0 | 190.4 | 99.7 | 4.1 |
Proanthocyanidin B1 | 51.3 | 61.8 | 112.9 | 99.6 | 3.0 |
Catechin | 215.9 | 250.0 | 458.4 | 97.0 | 2.2 |
Gallic acid | 11.7 | 19.5 | 31.7 | 102.2 | 3.0 |