Research Article
Simultaneous Determination of Six Major Constituents of the Herbal Formula Insampaedok-san Using HPLC-PDA
Table 4
Recovery levels for the six marker compounds ().
| Compound | Original mean level (μg mL−1) | Spiked level (μg mL−1) | Detected mean level (μg mL−1) | Recovery mean (%) | RSD (%) |
| 1 | | 4.00 | 29.03 | 103.19 | 1.62 | 24.91 | 10.00 | 34.92 | 101.33 | 1.42 | | 20.00 | 45.42 | 102.57 | 0.73 |
| 2 | | 2.00 | 9.53 | 104.43 | 0.99 | 7.44 | 4.00 | 11.58 | 103.34 | 0.82 | | 8.00 | 15.40 | 99.50 | 3.89 |
| 3 | | 20.00 | 124.26 | 99.16 | 1.81 | 104.43 | 50.00 | 157.15 | 105.46 | 0.63 | | 100.00 | 210.39 | 105.96 | 0.31 |
| 4 | | 3.00 | 17.56 | 100.46 | 1.04 | 14.55 | 8.00 | 22.81 | 103.28 | 0.47 | | 15.00 | 28.93 | 95.88 | 1.34 |
| 5 | | 10.00 | 81.39 | 95.32 | 1.79 | 71.86 | 35.00 | 106.78 | 99.78 | 0.92 | | 70.00 | 143.45 | 102.27 | 0.33 |
| 6 | | 6.00 | 39.11 | 101.53 | 1.09 | 33.02 | 15.00 | 46.91 | 92.62 | 0.73 | | 30.00 | 62.09 | 96.90 | 0.21 |
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