Table 1.
Characterization of chemical constituents of licorice aqueous extract by UHPLC-Q Extractive Orbitrap-MS.
| Compounds | tR | Identification | Molecular Formula | [M − H]− | MS/MS (m/z) |
|---|---|---|---|---|---|
| 1 | 14.82 | Liquiritin apioside or isomer | C26H30O13 | 549.16046 (0.351) | 255, 153, 135, 119, 91 |
| 2 | 15.26 | Liquiritin * | C21H22O9 | 417.1191 (2.784) | 255, 153, 135, 119 |
| 3 | 20.85 | Isoliquiritin apioside | C26H30O13 | 549.16150 (2.245) | 255, 153, 135, 119, 91 |
| 4 | 22.16 | Isoliquiritin * | C21H22O9 | 417.11899 (0.881) | 255, 153, 135, 119, 91 |
| 5 | 24.23 | Liquiritigenin * | C15H12O4 | 255.06618 (3.9) | 153, 135, 119, 91 |
| 6 | 32.79 | Isoliquiritigenin * | C15H12O4 | 255.06635 (4.566) | 237, 153, 119, 91 |
| 7 | 32.81 | Glycyrrhetinic acid * | C42H62O16 | 821.39648 (1.3) | 759, 469, 351 |
* Compared with a reference standard.