Table 2.
High performance liquid chromatography of microwave-assisted extraction
| Ginsenoside | Regression equations | R2 | Linear range (μg/mL) |
LOD (μg/mL) |
LOQ (μg/mL) |
Intraday precision (%) (n=6) |
Interday precision (%) (n=9) |
Recovery (%) |
RSD of recovery (%) |
|---|---|---|---|---|---|---|---|---|---|
| 20(S)-Rh1 | Y=4,749.6x−7.8663 | 0.9996 | 1.06–41.4 | 0.45 | 1.55 | 0.65 | 1.64 | 97.97 | 1.70 |
| 20(R)-Rh1 | Y=6,124.2x−7.6974 | 0.9995 | 0.70–280.0 | 0.42 | 1.40 | 0.68 | 1.53 | 102.01 | 1.30 |
| Rg6 | Y=11,971x−4.592 | 0.9995 | 0.20–80.0 | 0.19 | 0.42 | 0.81 | 1.66 | 100.18 | 1.70 |
| F4 | Y=9,856.9x−4.3474 | 0.9998 | 0.38–152.0 | 0.30 | 0.72 | 0.96 | 1.49 | 102.18 | 0.55 |
| Rk3 | Y=12,051x−12.87 | 0.9995 | 0.52–208.0 | 0.21 | 0.52 | 1.09 | 1.58 | 102.23 | 2.09 |
| 20(S)-Rg3 | Y=4,723.8x−3.5827 | 0.9997 | 0.62–248.0 | 0.37 | 1.34 | 0.98 | 1.93 | 103.24 | 0.93 |
| 20(R)-Rg3 | Y=3,931.6x−3.8801 | 0.9997 | 0.76–304.0 | 0.33 | 1.62 | 0.56 | 1.55 | 103.02 | 0.62 |
| Rk1 | Y=8,670.4x−6.0863 | 0.9996 | 0.42–168.0 | 0.22 | 0.90 | 1.22 | 1.32 | 101.62 | 0.28 |
| Rg5 | Y=2,472.2x−1.9191 | 0.9998 | 0.78–312.0 | 0.18 | 0.75 | 1.03 | 2.06 | 102.28 | 0.40 |
LOD, limit of detection; LOQ, limit of quantification; RSD, relative standard deviation