Table 1.
Results of the quantification of flavonoids in Dracocephalum heterophyllum Benth.
| Flavonoid | Regression equation | R 2 value | Percentage∗∗ | SD∗ | RSD∗ | LOD∗ (%) | LOQ∗ (%) |
|---|---|---|---|---|---|---|---|
| Luteolin | y = 298.53x + 30.661 | 0.9998 | 0.08 | 0.01 | 0.15 | 0.04 | 0.08 |
| Kaempferol | y = 335.3x + 29.891 | 0.9999 | 0.14 | 0.01 | 0.08 | 0.03 | 0.12 |
| Diosmetin | y = 788.3x + 14.623 | 0.9999 | 0.28 | 0.01 | 0.04 | 0.03 | 0.11 |
| Chrysosplenetin | y = 741.7x + 47.374 | 0.9998 | 0.79 | 0.03 | 0.04 | 0.08 | 0.28 |
∗SD: standard deviation; RSD: relative standard deviation; LOD: limit of detection; LOQ: limit of quantification; ∗∗percentage of the dried extract.