Table 5: Hydroxyl radical scavenging activity of JSE.

JSE/TPC (µg/ml) Percent inhibition Linear regression equation
(correlation coefficient)
IC50 (μg/ml)
1.64 25 ± 2 - -
3.28 33.2 ± 0.9 - -
4.92 43 ± 1 y = 7.5982x + 6.293
(R2 = 0.9676)
5.75
6.56 57 ± 2 - -
8.21 66 ± 2 - -