In the case of all three enzymatic tests, S. nigra L. showed the highest activity (205.63 mg TE/g extract, 314.06 mg TE/g extract and 1.43 mmol TE/g extract, respectively), with the exception of metal chelating assay where M. nigra L. with the value of 19.33 mg EDTAE/g extract showed the most potent activity. On the other hand, M. nigra L. showed the lowest activity in ABTS, CUPRAC and phosphomolybdenum assays (61.30 mg TE/g extract, 43.98 mg TE/g extract and 0.62 mmol TE/g extract, respectively), while T. montanum L. exhibited the lowest activity in the case of metal chelating assay (1.38 mg EDTAE/g extract).