Table 2.
Calibration curves data for the quantification of polyphenolic compounds in Gynura procumbens.
| Peak No. | Compound | Slopes of Calibration | Correlation Coefficient (r2) | LOD (mg/L) |
LOQ (mg/L) |
|---|---|---|---|---|---|
| 1 | Chlorogenic acid | 14.545 | 0.9990 | 0.134 | 0.403 |
| 2 | Oxypeucedanin | 11.8 | 1 | 0.093 | 0.279 |
| 3 | Isoimperatorin | 7.0775 | 0.9997 | 0.273 | 0.820 |
| 4 | Indol-3-Carboxylic acid | 29.518 | 0.9993 | 0.030 | 0.090 |
| 5 | Kynurenic acid | 3.8206 | 0.9996 | 0.332 | 0.996 |
| 6 | Caffeic acid | 38.079 | 0.9995 | 0.029 | 0.086 |
| 7 | Coumaric acid | 66.712 | 0.9999 | 0.020 | 0.061 |
| 8 | Lutein | 6.5494 | 0.9996 | 0.182 | 0.547 |
| 9 | Luteolin | 18.597 | 0.9999 | 0.046 | 0.139 |
LOD, limit of detection; LOQ, limit of quantitation.