Table 4.
Yield of extraction, total phenol content (TPC), and in vitro antioxidant activities of Lycium leaf samples.
| Yield | TPC | DPPH | ABTS | FRAP | |
|---|---|---|---|---|---|
| % | mg GAE/g | IC50 * | mg TE/g | μmol Fe+2/g | |
| 1B | 16.67 ± 0.54 | 14.31 ± 0.12 | 1.01 ± 0.06 | 30.18 ± 1.32 | 194.40 ± 6.85 |
| 2B | 23.84 ± 0.84 | 8.95 ± 0.08 | 5.30 ± 0.26 | 21.91 ± 0.45 | 138.08 ± 1.15 |
| 3B | 22.78 ± 0.76 | 6.35 ± 0.14 | 14.95 ± 1.53 | 15.46 ± 0.86 | 76.34 ± 7.92 |
| 4B | 27.34 ± 0.95 | 19.12 ± 0.26 | 0.40 ± 0.02 | 34.27 ± 1.19 | 272.26 ± 4.94 |
| 1C | 21.12 ± 0.86 | 12.68 ± 0.51 | 2.21 ± 0.22 | 25.62 ± 0.23 | 165.60 ± 2.36 |
| 2C | 21.36 ± 0.98 | 14.37 ± 0.24 | 1.93 ± 0.12 | 26.79 ± 0.87 | 222.57 ± 3.82 |
| 3C | 16.32 ± 0.72 | 13.54 ± 0.18 | 1.33 ± 0.09 | 24.23 ± 0.64 | 210.19 ± 8.38 |
| 4C | 19.07 ± 0.92 | 10.78 ± 0.23 | 2.05 ± 0.21 | 21.41 ± 1.21 | 158.89 ± 0.75 |
Data are reported as the mean ± standard deviation of three independent measurements (n = 3) and are expressed on a dry weight basis; * mg/mL; B = L. barbarum leaf samples; C = L. chinense leaf samples.