Table 3.
Quinic acid, gallic acid, and quercetin dihexoside recovery (mg/g DWP) and their concentration in the extracts (mg/g DWE) obtained from P. officinalis by different solvents.
| Sample | Quinic Acid | Gallic Acid | Quercetin Dihexoside * | |||
|---|---|---|---|---|---|---|
| DWP | DWE | DWP | DWE | DWP | DWE | |
| PLASEM | 3.61 ± 0.12 a | 7.58 ± 0.99 a | 2.59 ± 0.08 a | 5.45 ± 0.09 a | 0.50 ± 0.001 a | 1.04 ± 0.05 a |
| PRASEM | nd | nd | 0.11 ± 0.001 b | 0.44 ± 0.001 b | nd | nd |
| PLTRM | 1.52 ± 0.09 b | 3.50 ± 0.31 b | 0.22 ± 0.001 b,c | 0.51 ± 0.002 b | 0.66 ± 0.003 b | 1.52 ± 0.02 b |
| PLTRW | 1.83 ± 0.10 c | 5.51 ± 0.32 c | 4.10 ± 0.25 d | 12.33 ± 0.87 c | 0.55 ± 0.001 c | 1.64 ± 0.01 b |
| PRTRW | 0.41 ± 0.001 d | 2.14 ± 0.12 b | 0.34 ± 0.002 b,c | 1.75 ± 0.44 d | nd | nd |
nd—not detected; * Based on the calibration curve obtained by using rutin; values represented as mean ± standard deviation (n = 3); a–d: means down the vertical column not sharing common letters are significantly different (p < 0.05). The extracts isolated with methanol and water are further referred to by the abbreviation composed of the first letter of the plant (P—peony), the botanical part (L—leaves, R—roots), and the solvent (M—methanol, W—water); ASE and TR mean extraction type: accelerated solvent extraction and traditional extraction, respectively.