Table 2.
Method validation data of the detected ginsenosides
| Compounds | Calibration curve | R2 | Linear range (μg/mL) | Repeatability (n = 3, RSD, %) |
Stability (24 h, RSD, %) |
Recovery (n = 6, %) |
LOD (ng/mL) |
LOQ (ng/mL) |
|
|---|---|---|---|---|---|---|---|---|---|
| Mean | RSD | ||||||||
| G∗-Rg1 | y = 392.004654x – 2454.104831 | 0.9984 | 0.0098–7.84 | 0.36 | 6.99 | 90.47 | 4.40 | 16.17 | 24.46 |
| G-Re | y = 299.734277x – 1791.661821 | 0.9985 | 0.0098–7.84 | 0.94 | 7.08 | 90.20 | 4.54 | 18.30 | 42.63 |
| 20(S)-G-Rh1 | y = 620.207468x – 3461.353416 | 0.9971 | 0.0096–7.68 | 0.44 | 8.80 | 94.55 | 7.03 | 6.08 | 16.48 |
| 20(S)-G-Rg2 | y = 446.870617x – 3996.127372 | 0.9971 | 0.0121–9.68 | 2.76 | 8.41 | 93.24 | 3.58 | 21.22 | 28.12 |
| G-Rb1 | y = 38.734528x + 276.504261 | 0.9967 | 0.0206–16.48 | 1.45 | 8.23 | 85.29 | 6.83 | 38.66 | 178.59 |
| G-Rb2 | y = 110.324768x – 940.621364 | 0.9972 | 0.0212–16.96 | 1.83 | 7.26 | 92.71 | 3.75 | 35.46 | 156.12 |
| G-Rd | y = 330.118348x – 1789.047109 | 0.9983 | 0.0126–10.08 | 3.29 | 7.78 | 90.54 | 4.26 | 19.19 | 41.97 |
LOD = limit of detection; LOQ = limit of quantitation; RSD = relative standard deviation.