In the present study, the percentage inhibition of 2,20-bipyridyl–
Fe2+ complex formation was obtained in the presence
and absence of palm date syrups (Table 1). These findings
showed that the palm date syrups have a low to intermediate
iron binding capacity at the tested levels, which means that
the syrups can act as peroxidation protectors. However, the
Rotab syrup still has significantly higher ability to chelate
Fe2+ than others as observed from the results of the lowest
and second levels. The effect of the syrups on the inhibition
of Fe2+ and 2,20-bipyridyl complex formation is shown to be
in a dose-dependent manner (Table 1). However, at the highest
concentration, the Rotab and Saudi syrups showed significantly
higher ferrous chelating efficacy than Vit. C.