Table 1.
Slope, intercept and coefficient of determination (r2) of the calibration curves *, limits of detection (LD) and quantification (LQ) for glycyrrhizin, glabridin, and isoliquiritigenin.
| Analyte | Slope (a) | Intercept (b) | r 2 | LD (μg) | LQ (μg) |
|---|---|---|---|---|---|
| Glycyrrhizin | 257.96 | 1.54 | 0.99998638 | 0.006112 | 0.018522 |
| Gla | 3402.71 | 26.12 | 0.9999998 | 0.000741 | 0.002246 |
| Iso | 5079.81 | 21.21 | 0.9999931 | 0.005013 | 0.015191 |
* calibration curves are represented as y = ax + b, where y is the absorbance at the selected wavelength, and x is the weight of the analyte (μg).