Table 1.
Calibration curves, linearity, limits of detection (LOD) and limits of quantification (LOQ) of the five analytes.
| Analytes | Regression Equation | Linear Range (µg/mL) | Correlation Coefficient (R2) | LOD (µg/mL) | LOQ (µg/mL) |
|---|---|---|---|---|---|
| Neochlorogenic acid | y = −833.90·x2 + 139143.92·x + 6461.02 | 0.75–48.00 | 0.9997 | 0.05 | 0.19 |
| Chlorogenic acid | y = −1795.39·x2 + 239416.18·x − 4374.15 | 0.19–48.00 | 0.9993 | 0.05 | 0.19 |
| Cryptochlorogenic acid | y = −677.23·x2 + 119252.57·x + 2703.14 | 0.19–48.00 | 0.9998 | 0.09 | 0.19 |
| Rutin | y = −1265.45·x2 + 220749.21·x + 1297.41 | 0.09–48.00 | 0.9999 | 0.02 | 0.09 |
| Isoquercitrin | y = −1970.01·x2 + 256239.13·x + 3378.03 | 0.09–48.00 | 0.9997 | 0.02 | 0.09 |