Antioxidant activity | Agro-ecological zones | Dry season | Wet season | p-values |
---|---|---|---|---|
DPPH inhibition (%) | Lari | 93.53 ± 1.71 | 91.41 ± 4.13 | 0.496 |
Kiambaa | 83.34 ± 1.73 | 79.85 ± 3.27 | 0.060 | |
Juja | 61.83 ± 6.68 | 60.63 ± 4.73 | 0.637 | |
Thika | 84.57 ± 1.79 | 88.82 ± 1.07 | 0.058 | |
Mean | 80.82 ± 3.39 | 80.18 ± 3.31 | 0.92 | |
Ferric reducing antioxidant potential (FRAP) (absorbance) | Lari | 1.00 ± 0.05 | 0.76 ± 0.04 | 0.002 |
Kiambaa | 0.44 ± 0.03 | 0.924 ± 0.05 | 0.0001 | |
Juja | 0.67 ± 0.06 | 0.34 ± 0.05 | 0.014 | |
Thika | 0.30 ± 0.02 | 0.23 ± 0.03 | 0.080 | |
Mean | 0.602 ± 0.04 | 0.569 ± 0.043 | 0.664 |