Concentration of selected phenolics present in SWE (100°C, 18 min) extracts obtained from different amounts (s) of Mentha x rotundifolia (MR16)
| s (g) | Concentration (mg g–1 dry sample) | ||
| Luteolin 7-O-glucoside | Rosmarinic acid | Salvianolic acid B | |
| 0.5 | 0.032 (0.003) | 2.21 (0.06)a | 0.29 (0.03)a |
| 1.0 | 0.051 (0.005)a | 3.8 (0.2)a | 0.33 (0.02)a |
| 1.5 | - | 0.79 (0.06)b | 0.135 (0.004)b |
Mean value and standard deviation in parentheses (n = 3); a,b different letters indicate significant (P < 0.05) differences for each compound among the experiments carried out with different sample amounts; -: none