Table 3.
Regression equation, linear range, precision, repeatability, stability, and limit of detection and quantitation
| Ginsenoside | Regression equation | Correlation factor (r2) | Linearity range (μg) | Precision (RSD%) |
Repeatability (RSD%) |
Stability (RSD%) |
Limit of detection (μg/mL) |
Limit of quantitation (μg/mL) |
|
|---|---|---|---|---|---|---|---|---|---|
| Intraday | Interday | ||||||||
| Rg1 | Y = 47404X + 1035 | 0.9993 | 8.9–445 | 4.25 | 2.70 | 1.99 | 4.86 | 0.22 | 0.67 |
| Re | Y = 64465X + 2272 | 0.9998 | 17.9–1,790 | 2.10 | 2.88 | 2.85 | 2.03 | 0.35 | 1.06 |
| Rb1 | Y = 49094X + 467.5 | 0.9991 | 12.9–645 | 2.77 | 6.13 | 2.68 | 3.92 | 0.23 | 0.68 |
| Rc | Y = 57382X + 668.6 | 0.9993 | 10–500 | 1.86 | 5.56 | 0.61 | 2.40 | 0.27 | 0.82 |
| Rb2 | Y = 53085X + 1326 | 0.9994 | 10.8–540 | 2.92 | 5.37 | 1.61 | 3.55 | 0.23 | 0.69 |
| Rb3 | Y = 53575X + 1956 | 0.9998 | 19–1,520 | 9.27 | 8.51 | 4.05 | 4.90 | 0.37 | 1.08 |
| Rd | Y = 60916X + 1605 | 0.9993 | 19–900 | 2.29 | 6.94 | 0.71 | 3.47 | 0.38 | 1.14 |
Y and X are, respectively, the peak areas and concentrations (μg/mL) of the analytes
RSD = relative standard deviation