Table 3.
Quantitative amounts of individual flavonoids and phenolic acids in leaves of Ruppia cirrhosa (R. cirr.) and Ruppia maritima (R. mar.) collected in summer 2017 from five localities (A–E). 1,2
| Compound | R. cirr. (A) (mg/g) | R. cirr. (B) (mg/g) | R. cirr. (C) (mg/g) | R. mar. (D) (mg/g) | R. mar. (E) (mg/g) |
|---|---|---|---|---|---|
| CA | 12.7 ± 2.5 a | 11.9 ± 2.2 a | 11.1 ± 1.4 a | 30.2 ± 4.3 b | 27.9 ± 5.1 b |
| 1 | 2.2 ± 0.3 d | 0.7 ± 0.1 | 1.1 ± 0.1 g | 2.0 ± 0.5 d | 1.1 ± 0.2 g |
| 2 | 1.3 ± 0.2 | 0.5 ± 0.04 e | 1.0 ± 0.1 f | 1.0 ± 0.2 f | 0.6 ± 0.1 e |
| 3 | 0.9 ± 0.1 | 0.4 ± 0.04 e | 0.7 ± 0.04 f,g | 0.6 ± 0.1 b,f | 0.6 ± 0.1 b,e,g |
| 4 | 1.9 ± 0.3 | 0.7 ± 0.05 a | 0.8 ± 0.04 a | 1.5 ± 0.3 b | 1.4 ± 0.2 b |
| 5 | 2.9 ± 0.4 | 1.0 ± 0.1 a | 1.0 ± 0.1 a | 1.6 ± 0.3 b | 2.0 ± 0.2 b |
| 6 | 2.1 ± 0.2 d | 0.8 ± 0.1 | 1.3 ± 0.1 f | 1.7 ± 0.3 b,d,f | 1.6 ± 0.2 b |
| 7 | 1.1 ± 0.2 c | 0.6 ± 0.1 a,e | 0.5 ± 0.04 a,f | 0.6 ± 0.07 e,f | 1.1 ± 0.2 c |
| 8 | 2.2 ± 0.3 c | 1.1 ± 0.1 | 1.5 ± 0.1 | 1.8 ± 0.2 | 2.3 ± 0.3 c |
| sum flavonoids | 14.7 ± 1.9 | 5.9 ± 0.5 | 7.9 ± 0.5 | 10.7 ± 1.7 b | 10.7 ± 1.5 b |
| sum phenolics | 27.4 ± 4.3 | 17.7 ± 2.1 a | 19.0 ± 1.8 a | 41.0 ± 5.7 b | 38.5 ± 6.3 b |
1 Amounts are expressed in mg/g (mean value ± SD, n = 4) dry weigth, based on quercetin 3-O-β-d-glucopyranoside (flavonoids) or caffeic acid (chicoric acid) equivalents.2 same letters (a–g) indicate where values are significantly not different, p > 0.05 with a t test.