Table 4.

Effect of 1–5 on cellular oxidation stress reduction activity.

Group	DCF fluorescence (%)
Blank	0.7 ± 0.004
Control	89.2 ± 3.32
1
10 µg/mL	79.4 ± 5.32
50 µg/mL	64.3 ± 1.83
100 µg/mL	44.6 ± 4.39
2
10 µg/mL	86.5 ± 6.17
50 µg/mL	68.4 ± 5.38
100 µg/mL	55.2 ± 7.35
3
10 µg/mL	72.3 ± 7.09
50 µg/mL	60.8 ± 4.21
100 µg/mL	39.6 ± 3.19
4
10 µg/mL	69.8 ± 3.26
50 µg/ml	52.1 ± 2.99
100 µg/mL	35.1 ± 2.67
5
10 µg/mL	73.4 ± 5.16
50 µg/mL	58.5 ± 6.43
100 µg/mL	38.3 ± 4.29
Ascorbic acid 25 μg/mL	19.1 ± 1.46

Fluorescence (488 nm (excitation) and 535 nm (emission)) was finally quantified after 24 h incubation. Data is shown as mean ± SD of the experiments (3 replicates each).