Table 2.
Contents and comparisons of alkamides (alk) and cichoric acid (cic) in the roots (R) and the young tops (T) of Echinacea purpurea (n = 30 plants).
| Type | Mean ± SD (mg·g−1, dry wt) | Range | % |
|---|---|---|---|
| R (total alk) | 14.81 ± 5.98 | 6.4–27.06 | |
| T (total alk) | 0.77 ± 1.00 | 0.22–5.25 | |
| R (alk 8/9z) | 1.62 ± 1.24 | 0.4–4.28 | |
| T (alk 8/9) | 0.59 ± 0.84 | 0.16–4.45 | |
| R (cic) | 8.41 ± 4.45 | 2.42–19.83 | |
| T (cic) | 18.88 ± 11.52 | 4.79–38.55 | |
| Comparison | |||
| T(total alk):R (total alk) | 5 | ||
| R (alk 8 and 9):T (total alk) | 11 | ||
| T (alk 8 and 9): T(total alk) | 77 | ||
| T (alk 8 and 9):R (alk 8 and 9) | 36 | ||
| T (cic):R (cic) | 224 |
Z
Dodeca-2E, 4E, 8Z, 10E-tetraenoic acid isobutylamide and dodeca-2E, 4E, 8Z, 10Z-tetraenoic acid isobutylamide (alkamides 8 and 9).