The evaluation the reducing ability of palm dates syrups
were carried out on the basis of the oxidizability of their chemical
constituents, such as phenolic and polyphenolic compounds,
which could reduce Fe3+ to Fe2+ ions. The total
reducing ability of each palm dates syrup at different concentrations
was compared to Vit. C (a positive control), and the
results were expressed as Vit. C equivalent (lM) (Fig. 1). These
data showed that the reducing power ability of all palm dates
syrups appeared in a dose dependent fashion where the Rotab
syrup has shown to have the highest values. The present findings
were in agreement with another study carried out by other
researchers (Bilgari et al., 2008).