Table 1.
Parameters of the analytical method of the flavan-3-ols and procyanidins.
| Standard Compounds |
Retention Time (min) |
Calibration Range (µg/mL) |
Calibration Formula |
Regression Factor (R2) |
RSD (%) |
LOD/LOQ |
|---|---|---|---|---|---|---|
| (–)-Epicatechin | 4.56 | 4.5–45.0 | Y = 269140X + 34947 | 0.9989 | 3.97 | 0.007/0.021 |
| Procyanidin B2 | 6.12 | 10.55–105.5 | Y = 205281X + 419517 | 0.9987 | 2.91 | 0.010/0.030 |
Calibration curves of the flavan-3-ols and procyanidins were prepared and obtained from (-)-epicatechin and procyanidin B2 standards, respectively.