Table 3.
Metal chelating activity, ferric reducing power and total antioxidant capacity of Juniperus extracts
| Plant Part | Extract | Metal Chelating Activity % ± SD | Ferric Reducing Power Absorbance ± SD | Total Antioxidant Capacity | |||||
|---|---|---|---|---|---|---|---|---|---|
| 3 (mg/mL) | 1 (mg/mL) | 0.3 (mg/mL) | 3 (mg/mL) | 1 (mg/mL) | 0.3 (mg/mL) | 1 (mg/mL) | |||
| J. macrocarpa | Branch | Water | >100.00*** | >100.00*** | 83.06 ± 0.95*** | 1.95 ± 0.09 | 1.09 ± 0.04 | 0.39 ± 0.01 | - |
| MeOH | - | - | - | 3.31 ± 0.02 | 1.44 ± 0.06 | 0.88 ± 0.02 | - | ||
| EA | >100.00** | >100.00*** | >100.00*** | 3.12 ± 0.15 | 2.39 ± 0.08 | 0.74 ± 0.07 | 300.21 ± 8.46 | ||
| Fruit | Water | > 100.00*** | 85.21 ± 1.87*** | - | 0.59 ± 0.04 | 0.20 ± 0.03 | 0.05 ± 0.00 | - | |
| MeOH | - | - | - | 1.52 ± 0.14 | 0.41 ± 0.01 | 0.12 ± 0.00 | - | ||
| EA | 70.07 ± 6.95** | 14.48 ± 3.33* | - | 0.28 ± 0.01 | 0.18 ± 0.08 | 0.04 ± 0.01 | 3083.86 ± 4.88 | ||
| Leaf | Water | >100.00*** | >100.00*** | - | 2.56 ± 0.13 | 1.06 ± 0.06 | 0.34 ± 0.02 | - | |
| MeOH | - | - | - | 3.02 ± 0.07 | 1.20 ± 0.04 | 0.38 ± 0.02 | - | ||
| EA | >100.00** | >100.00*** | 99.09 ± 0.01*** | 3.19 ± 0.06 | 0.68 ± 0.03 | 0.18 ± 0.01 | 3422.13 ± 2.22 | ||
| J. excelsa | Branch | Water | - | - | - | 2.63 ± 0.05 | 1.79 ± 0.03 | 0.58 ± 0.02 | - |
| MeOH | 22.73 ± 6.66** | 18.14 ± 3.58* | 13.30 ± 0.96*** | 3.59 ± 0.03 | 2.03 ± 0.06 | 0.65 ± 0.01 | 2301.62 ± 17.98 | ||
| EA | - | - | - | 3.50 ± 0.04 | 1.21 ± 0.02 | 0.43 ± 0.01 | 2350.00 ± 7.62 | ||
| Fruit | Water | - | - | - | 0.75 ± 0.01 | 0.17 ± 0.00 | 0.06 ± 0.00 | - | |
| MeOH | - | - | - | 1.46 ± 0.04 | 0.57 ± 0.01 | 0.17 ± 0.00 | 1885.84 ± 5.59 | ||
| EA | 96.81 ± 0.14*** | 97.88 ± 0.42** | 12.21 ± 1.17*** | 0.23 ± 0.01 | 0.11 ± 0.01 | 0.04 ± 0.00 | 3006.34 ± 22.87 | ||
| Leaf | Water | - | 18.71 ± 4.05*** | 17.66 ± 3.80*** | 2.77 ± 0.04 | 1.26 ± 0.01 | 0.37 ± 0.01 | - | |
| MeOH | 99.31 ± 0.05*** | 99.72 ± 0.03** | 18.71 ± 2.98*** | 0.98 ± 0.06 | 0.31 ± 0.08 | 0.09 ± 0.00 | 5867.00 ± 25.22 | ||
| EA | - | - | - | 0.50 ± 0.04 | 0.18 ± 0.01 | 0.06 ± 0.00 | 1639.18 ± 10.43 | ||
| Reference | > 100.00a*** | > 100.00 a*** | > 100.00 a*** | 3.59 ± 0.09b | 3.45 ± 0.08 b | 3.08 ± 0.06 b | 16057.79 ± 702.89 c | ||
-: No activity. SD: Standard Deviation, aEDTA, bAscorbic acid, cQuercetin, Total antioxidant capacity is given as mg AAE/g extract ± SD, *p < 0.05, **p < 0.01, ***p < 0.001.