Table 1.
Phenolic amounts in the aqueous crude extracts. Data are expressed as μg (gdw−1) of plant material (mean values ± SD of triplicates). Individual compounds are given in order of elution.
| Peak number | RT (min) | Compound name | λmax band I (nm) | Cadiz | Arcachon | ||
|---|---|---|---|---|---|---|---|
| 2 Oct. 2007 * | 3 June 2008 * | 14 Oct. 2007 * | 6 June 2008 * | ||||
| 1 | 9.3 | Zosteric acid | 283 | 331 ± 2 | 298 ± 1 | 328 ± 2 | 281 ± 2 |
| 2 | 12.3 | Caffeic acid | 324 | 10 ± 1 | Tr | 339 ± 2 | 225 ± 2 |
| 3 | 23.6 | Luteolin 7-sulfate | 348 | 410 ± 5 | 256 ± 3 | 803 ± 8 | 465 ± 5 |
| 4 | 24.8 | Apigenin 7-glucoside | 337 | 98 ± 2 | 69 ± 2 | tr ** | tr ** |
| 5 | 26.7 | Apigenin 7- sulfate | 337 | 2,410 ± 4 | 3,600 ± 5 | - | - |
| 6 | 27.3 | Diosmetin 7-sulfate | 347 | 319 ± 5 | 280 ± 5 | 5,636 ± 12 | 9,198 ± 9 |
| 7 | 29.5 | Luteolin | 350 | tr ** | tr ** | 25 ± 3 | 16 ± 2 |
| 8 | 32.6 | Apigenin | 335 | 79 ± 3 | 85 ± 3 | - | - |
| 9 | 33.3 | Diosmetin | 346 | 71 ± 3 | 65 ± 2 | 159 ± 3 | 216 ± 5 |
| Total flavonoids | 3,378 | 4,355 | 6,623 | 9,895 | |||
* sampling dates; ** tr: traces.