Table 2: Metal chelating activity of JSE.

JSE/TPC (μg/ml) Percent inhibition Linear regression equation
(correlation coefficient)
IC50 (μg/ml)
12.76 17 ± 1 - -
25.53 26 ± 1 - -
38.29 37 ± 1 y = 1.0085x + 1.2026
(R2 = 0.992)
48.39
51.06 55 ± 1 - -
63.82 65 ± 2 - -