Table 5.
Content of phenolic compounds in D. indicum var. aromaticum flower.
| Peak No. | Compound | Group | Peak Area proportion (% total area) | Contenta (mg/g DW) |
|---|---|---|---|---|
| 1 | 3-O-Caffeoyl-5-O-p- coumaroylquinic acid | Hydroxycinnamic acid | 2.21 | 0.25 ± 0.01 |
| 2 | Coumaroyloleuropein | Hydroxycinnamic acid | 9.69 | 0.42 ± 0.03 |
| 3 | Luteolin-O-glucoside | Flavonoid | 2.49 | 0.16 ± 0.01 |
| 4 | 3,5-Dicaffeoylquinic acid monohydrate | Hydroxycinnamic acid | 4.34 | 0.20 ± 0.00 |
| 5 | 3,5-Dicaffeoylquinic acid | Hydroxycinnamic acid | 5.43 | 0.24 ± 0.00 |
| 6 | Gallic acid monohydrate | Hydroxybenzoic acid | 2.80 | 0.31 ± 0.02 |
| 7 | Shikimic acid isomer | Hydroxybenzoic acid | 3.07 | 0.34 ± 0.02 |
| 8 | Methyoxyoleuropein isomer | Hydroxycinnamic acid | 2.97 | 0.14 ± 0.01 |
| 9 | Luteolin | Flavonoid | 19.75 | 1.61 ± 0.11 |
| 10 | Prenyl-dimethoxy-caffeoyl-p- coumaric acid | Hydroxycinnamic acid | 20.88 | 0.89 ± 0.06 |
| 11 | Apigenin | Flavonoid | 9.12 | 0.57 ± 0.02 |
| 12 | Chrysoeriol | Flavonoid | 2.23 | 0.13 ± 0.01 |
| 13 | Tricin | Flavonoid | 3.95 | 0.24 ± 0.00 |
| 17 | Acacetin | Flavonoid | 11.09 | 0.92 ± 0.02 |
| Phenolic acids content | 2.79 ± 0.15 | |||
| Flavonoids content | 3.63 ± 0.17 | |||
| Content of phenolics identified by HPLC-MSn | 6.42 ± 0.32 |
aMean ± SD (n = 3).