Hydrogen peroxide non reactive, but sometimes it can
be toxic to living cells, because in living cell it is converted
into free radical called hydroxyl radicals (•
OH),
react with biomolecules, cause tissue damage and cell
death. Table 2 shows the IC50 of (•
OH) scavenging effect
by various fractions along with ascorbic acid. SAME
(67.34 ± 3.21 μg/ml) markedly scavenged the free radical
and was most potent than reference chemicals; ascorbic
acid (76.3 ± 2.15 μg/ml respectively. Nonsignificant level
of association (P > 0.05, r2 = 0.1223) and (P > 0.05, r2 =
0.1056) was recorded between the TPC, flavonoids of
different extracts of SA and H2O2 scavenging activity