Table 2 Antioxidants potential activities of callus cultures of Fagonia indica elicited with UV-C radiations (0–10.8 kJ/m2) and grown in different photoperiod regimes using FRAP and ABTS cell free in vitro assays. Antioxidant capacity of samples was expressed in terms of TEAC (Trolox C equivalent antioxidant capacity) per mg of DW.
FRAP | ABTS | |
|---|---|---|
UV + photoperiod (16L/8D h) | ||
UV (10.8 kJ/m2) | 162.1 ± 0.6 f. | 390.9 ± 0.1 h |
UV (9.0 kJ/m2) | 168.2 ± 0.4 e | 474.4 ± 0.2 b |
UV (7.2 kJ/m2) | 177.7 ± 0.6 c | 478.2 ± 0.6 b |
UV (5.4 kJ/m2) | 182.3 ± 0.6 b | 489.1 ± 0.3 a |
UV 3.6 kJ/m2) | 179.8 ± 1.1 b | 466.7 ± 0.4 c |
UV (1.8 kJ/m2) | 152.2 ± 0.6 g | 425.2 ± 0.4 f. |
Control | 168.2 ± 0.6 e | 412.1 ± 0.4 g |
UV + cont. light (24 h) | ||
UV (10.8 kJ/m2) | 158.5 ± 0.2 f. | 456.4 ± 0.2 d |
UV (9.0 kJ/m2) | 160.2 ± 0.3 f. | 472.2 ± 0.2 bc |
UV (7.2 kJ/m2) | 168.5 ± 0.4 e | 486.1 ± 0.3 a |
UV 5.4 kJ/m2) | 155.4 ± 0.4 g | 418.7 ± 0.1 f. |
UV (3.6 kJ/m2) | 174.3 ± 0.2 d | 439.2 ± 0.4 e |
UV (1.8 kJ/m2) | 135.1 ± 0.4 i | 304.6 ± 0.3 l |
Control | 162.4 ± 0.7 f. | 384.9 ± 0.8 i |
UV + Dark (24 h) | ||
UV (10.8 kJ/m2) | 120.8 ± 0.3 k | 380.8 ± 0.4 i |
UV (9.0 kJ/m2) | 125.0 ± 0.3 j | 469.0 ± 0.3 c |
UV (7.2 kJ/m2) | 194.5 ± 0.2 a | 444.7 ± 0.2 e |
UV (5.4 kJ/m2) | 126.5 ± 0.2 j | 397.8 ± 0.4 h |
UV (3.6 kJ/m2) | 149.3 ± 0.2 g | 442.3 ± 0.9 e |
UV (1.8 kJ/m2) | 109.2 ± 0.4 l | 358.3 ± 0.2 j |
Control | 141.5 ± 0.4 h | 341.8 ± 0.2 k |
