Table 4.
Content of ptaquiloside and pterosin B in bracken fern from Hong Kong prepared as traditional Chinese medicine (air-dried; 5 days; approximately 25 °C; ± standard deviation).
| Sample type | Ptaquiloside (μg g−1)a | Pterosin B (μg g−1)a | PTAtrans |
|---|---|---|---|
| Croziers | 638 ± 90A | 775 ± 158C | 0.29 |
| Unfurling pinnae | 736 ± 57A | 312 ± 19D | 0.55 |
| Mature pinnae |
294 ± 12B |
BD |
1.00 |
| ANOVA P-valueb | 7.7E-6 | 1.2E-4 | – |
A to D Mean contents with different letters are statistically different (Tukey post hoc test of each compound, α = 0.05).
a
As pr. dry weight.#Below Limit of Detection.
b
One-way Analysis of Variance (significant effect of treatment, P-value < 0.05).