Table 2. Free radical scavenging activity (FRSA), total phenolic contents (TPC) and total flavonoid content (TFC) of W. somnifera roots grown in vitro and in the field.
| Sample a | FRSA IC 50 (μg/mL) | TPC (mg GAE/g) | TFC (mg CE/g) |
|---|---|---|---|
| 2MFR | 188.40 ± 3.83 a | 79.25 ± 0.84 a | 14.78 ± 0.33 a |
| 5MFR | 117.27 ± 1.31b | 95.45 ± 2.20b | 19.84 ± 0.67b |
| 1MIR | 81.01 ± 1.60c | 118.91 ± 2.85c | 32.68 ± 0.46c |
| 1.5MIR | 101.60 ± 2.23d | 104.40 ± 5.40d | 22.03 ± 0.19d |
| Ascorbic acid | 7.39 ± 0.08e | - | - |
Each value is shown as the mean ± SD (N = 7). Different letters in the same column indicate a significant difference (p<0.05). GAE: gallic acid equivalent, CE: catechin equivalent.
a2MFR, 2 months field-grown root; 5MFR, 5 months field-grown root; 1MIR, 1MIR, 1 month in vitro root; 1.5 months in vitro root.