Compound | Spiked concentration (μg/mL) | Extraction recovery (%) | RSD (%) | Matrix effect (%) | RSD (%) |
Poliumoside | 0.2 | 93.89 | 1.20 | 105.34 | 2.71 |
1 | 103.32 | 7.98 | 92.49 | 14.94 | |
8 | 99.92 | 6.10 | 100.27 | 12.65 | |
Caffeic acid | 10 | 93.80 | 3.65 | 94.21 | 4.51 |