Table 2 Linear regression, LODs and LOQs, precisions, reproducibility, stability and recovery for eight compounds
Compound | Regression equation | r | Linear range | LOD | LOQ | Precision | Reproducibility | Stability | Recover (n = 6) | |
|---|---|---|---|---|---|---|---|---|---|---|
(n = 2) | (μg/mL) | (μg/mL) | (μg/mL) | (n = 6) RSD (%) | (n = 6) RSD (%) | (RSD,%) | Recovery (%) | RSD (%) | ||
Salidroside | Y = 218.51X-0.4 | 0.9999 | 3.50-700 | 0.089 | 0.27 | 0.95 | 1.46 | 0.53 | 99.22 | 2.45 |
Tyrosol | Y = 384.13X-3.9 | 0.9999 | 0.74-737 | 0.014 | 0.043 | 2.67 | 2.42 | 2.40 | 101.7 | 1.68 |
Gallic acid | Y = 2923.6X-13.8 | 1 | 2.52-504 | 0.042 | 0.13 | 0.49 | 1.80 | 1.88 | 98.44 | 2.85 |
(+)Catechin | Y = 339.77X + 3.7 | 0.9999 | 3.25-325 | 0.031 | 0.15 | 1.87 | 2.35 | 2.11 | 99.69 | 2.25 |
Rosarin | Y = 1954.5X-2.7 | 0.9999 | 3.21-321 | 0.094 | 0.36 | 1.90 | 2.05 | 1.67 | 99.77 | 2.80 |
Rosavin | Y = 2140.4X + 8.4 | 0.9999 | 0.071-284 | 0.0078 | 0.027 | 1.97 | 1.66 | 1.96 | 97.51 | 2.25 |
Rosin | Y = 3076.8X-4.2 | 0.9999 | 1.25-375 | 0.037 | 0.18 | 1.45 | 1.19 | 1.10 | 100.5 | 2.77 |
Rhodionin | Y = 166.15X + 1.3 | 0.9999 | 0.18-183 | 0.0094 | 0.032 | 2.32 | 2.12 | 2.61 | 99.4 | 1.72 |