Table 2.
The table reports the validation parameters for amyrin quantitative analyses.
| Parameter | α-Amyrin | β-Amyrin | Acceptability Range | ||||
|---|---|---|---|---|---|---|---|
| R 2 | 0.9965 (0.9966) |
0.9977 (0.9990) |
0.9966 (0.9994) |
0.9994 (0.9995) |
0.9963 (0.9990) |
0.9961 (0.9995) |
≥0.995 |
| DIFF% | 11.55 (7.15) | 3.33 (6.49) | 14.89 (13.63) | 5.67 (1.52) |
10.06 (13.63) |
15.73 (15.16) |
≤25 |
| SEL% | 7.01 | 7.80 | ≤30 | ||||
| LOD (mg/L) | 0.20 (0.11) | 0.24 (0.07) | |||||
| LOQ (mg/L) | 0.67 (0.39) | 0.79 (0.25) | |||||
| RSD% 0.5 mg/L (0.1 mg L−1) |
18.87 (16.95) |
16.81 (21.94) |
≤25 | ||||
| ERR% 0.5 mg L−1 (0.1 mg L−1) | 13.62 (18.3) | 4.66 (25.6) |
14.95 (24.6) |
13 (12.4) |
19.10 (18.4) |
8.38 (15.9) |
≤20 |
The reported values are R2 for each curve, the linearity and repeatability (DIFF%), selectivity (SEL%), sensitivity (limit of detection (LOD), limit of quantitation (LOQ)), percent standard deviation (RSD%) and precision (ERR%) for the unweighted calibration method; values reported in brackets are relative to 1/Y weighted calibration. Parameters are calculated as reported in supplementary materials.