Table 5.
Leaf biochemical components and antioxidant enzyme activities in response to different durations of UVA exposure.
| Treatment | Control | UVA-5d | UVA-10d | UVA-15d |
|---|---|---|---|---|
| Total phenolic (mg GAE g−1·FW) | 1.62 ± 0.05b | 1.97 ± 0.11ab | 2.05 ± 0.13a | 1.97 ± 0.14ab |
| Total flavonoids (mg RUE g−1·FW) | 7.9 ± 0.5 | 8.7 ± 1.0 | 8.5 ± 0.8 | 8.8 ± 0.8 |
| Anthocyanin (mg 100 g−1·FW) | 20.3 ± 0.4c | 23.8 ± 0.2b | 23.9 ± 0.3b | 25.2 ± 0.6a |
| Ascorbic acid (μg g−1·FW) | 208.4 ± 16.2b | 307.3 ± 15.4a | 340.1 ± 7.7a | 322.4 ± 14.8a |
| Soluble sugar content (mg g−1·FW) | 16.6 ± 0.6c | 20.2 ± 0.8b | 23.6 ± 0.6a | 22.7 ± 0.4a |
Data represent mean ± SE (n = 8). Means followed by different letters within one row differ significantly (P < 0.05) as established by the least significant difference test.