Table 2.
Analytical merits of the HPLC method [limit of detection (LOD), limit of quantification (LOQ), calibration equation (CE), and square of correlation coefficient (R2)].
| Compound | Retention Time (min) | CE | R2 | LOD (µg/mL) | LOQ (µg/mL) |
|---|---|---|---|---|---|
| Ferulic Acid | 28.574 | y = 13.899x − 2.0306 | 0.9999 | 0.27 | 0.90 |
| Vanilic Acid | 21.167 | y = 32.748x − 0.8276 | 0.9999 | 0.15 | 0.49 |
| Ellagic Acid | 31.205 | y = 10.283x − 2.2246 | 0.9999 | 0.20 | 0.66 |
| Gallic Acid | 9.146 | y = 51.982x − 11.556 | 0.9999 | 0.17 | 0.57 |
| Caffeic Acid | 21.873 | y = 17.314x + 2.1885 | 0.9999 | 0.27 | 0.92 |
| Thymol | 51.379 | y = 13.732x + 1.3354 | 0.9997 | 0.25 | 0.83 |
| Taxifolin | 29.443 | y = 37.837x − 13.664 | 0.9998 | 0.17 | 0.56 |
| Catechin | 18.603 | y = 9.4667x + 1.9891 | 0.9999 | 0.27 | 0.91 |
| Syringic Acid | 22.102 | y = 55.622x + 8.7233 | 0.9999 | 0.11 | 0.35 |
| p-coumaric acid | 27.073 | y = 54.957x + 6.2524 | 0.9999 | 0.17 | 0.58 |
| Protocatechuic acid | 14.074 | y = 24.798x − 1.9328 | 0.9998 | 0.20 | 0.66 |