| Polyphenols | Contents (μg/g) |
| Vanillic acid | 0.28 ± 0.032 |
| Ferulaic acid; | 0.09 ± 0.002 |
| 3-Methoxybenzoic acid | 4.01 ± 0.009 |
| Quercetin | 4.11 ± 0.223 |
| Apiin | 0.98 ± 0.135 |
| Total | 9.65 ± 0.391 |