Table 2.
Phenolic compounds contents of EAA and EAF analyzed by HPLC (n = 3).
| Number | Phenolic compounds | Contents (mg/g dried weight) | |
|---|---|---|---|
| EAAa | EAFb | ||
| 1 | Homogentisic acid | 53.75 ± 1.51a | 48.42 ± 4.15a |
| 2 | Gallic acid | N.D.c | N.D. |
| 3 | Protocatechnic acid | 0.73 ± 0.01e | 0.62 ± 0.00d |
| 4 | Chlorogenic acid | 2.02 ± 0.02c | 0.98 ± 0.01d |
| 5 | (+)-Catechin | 2.09 ± 0.26c | 0.69 ± 0.02d |
| 6 | Caffeic acid | 0.64 ± 0.01e | 0.92 ± 0.02d |
| 7 | Phloretic acid | N.D. | N.D. |
| 8 | p-Coumaric acid | 0.61 ± 0.02e | 0.90 ± 0.02d |
| 9 | Ferulic acid | N.D. | N.D. |
| 10 | Veratric acid | N.D. | 0.85 ± 0.03d |
| 11 | Salicylic acid | 3.63 ± 0.18b | 21.40 ± 1.48b |
| 12 | Naringin | 1.74 ± 0.07cd | 0.74 ± 0.03d |
| 13 | Hesperidin | 1.00 ± 0.03de | 2.69 ± 0.21d |
| 14 | Quercetin | 0.52 ± 0.00e | 1.88 ± 0.02d |
| 15 | Cinnamic acid | N.D. | 0.89 ± 0.07d |
| 16 | Naringenin | 0.54 ± 0.00e | 0.42 ± 0.00d |
| 17 | Kaempferol | 0.75 ± 0.01e | 15.94 ± 1.47c |
| 18 | Hesperitin | N.D. | N.D. |
|
| |||
| Total contents | 68.02 ± 1.90 | 97.21 ± 7.52 | |
aEAA: aerial parts of Erigeron annuus, bEAF: flowers of Erigeron annuus, cN.D.: not detected. All values are means ± SD. Means with different letters on the same line (to analyze EAA and EAF) are significantly different at p < 0.05 by Duncan's test.