Table 1 Calibration curves of three analytes using HPLC-DAD
No. | Components | Linear range (μg/mL) | Regression Equation a) | Correlation coefficient (R2) b) |
|---|---|---|---|---|
1 | Chlorogenic acid | 25.00–400.00 | y = 0.2428x + 1.9062 | 0.9997 |
2 | 3,5-Di-caffeoylquinic acid | 25.00–400.00 | y = 0.2843x - 1.6878 | 0.9999 |
3 | Luteolin | 1.25–20.00 | y = 0.3257x + 0.0543 | 0.9999 |