Overall, those emulsions without antioxidant or containing the native phenolic had higher concentrations of volatile compounds than mayonnaises containing caffeates. The most effective caffeates added to fish oil enriched mayonnaise were those with short to medium chain (butyl, octyl and dodecyl). Further increase of the alkyl chain length followed a collapse in the antioxidant capacity of the esterified phenolic compound, thus supporting the cut-off effect theory. Therefore, it can be affirmed that the polar paradox
does not fully explain the behaviour of the antioxidants in these mayonnaises. Moreover, the cut-off theory seems a better approach to explain the oxidation in this complex matrix. Besides,
the trend observed for PV and volatiles development in the different mayonnaises was similar, meaning that the caffeates were able to delay formation of both primary and secondary oxidation prod-
ucts in mayonnaise.