Table 3.
Linearity, correlation coefficient (R2), limit of detection (LOD), and limit of quantification (LOQ) of the study compounds.
| Components | Regression equation | R2 (n = 6) | LOD (μg/mL) | LOQ (μg/mL) |
|---|---|---|---|---|
| Chrysophanol-8-O-β-D-glucoside | Y = 1129835.5134 x − 4143.8306 | 0.9997 | 0.107 | 0.324 |
| Emodin-8-O-β-D-glucoside | Y = 1166589.5924 x − 4843.5435 | 0.9999 | 0.051 | 0.153 |
| Aloe-emodin-3-(hydroxymethyl)-O-β-D-glucoside | Y = 1566373.4619 x − 1584.9194 | 0.9999 | 0.014 | 0.043 |
| Physcion-8-O-β-D-glucoside | Y = 646464.1072 x − 1080.1774 | 0.9999 | 0.068 | 0.207 |
| Aloe-emodin | Y = 2655755.6048 x − 3898.7532 | 1.0000 | 0.032 | 0.098 |
| Rhein | Y = 2383813.2019 x − 31300.4484 | 0.9998 | 0.001 | 0.003 |
| Emodin | Y = 2411001.4165 x − 108200.5661 | 0.9995 | 0.069 | 0.208 |
| Chrysophanol | Y = 1263925.5673 x − 25731.3339 | 0.9992 | 0.059 | 0.180 |
| Physcion | Y = 1958043.5193 x − 9490.6710 | 0.9999 | 0.037 | 0.112 |