This action depends on several factors, such as the induction of lipid peroxidation and its concentration, the composition of the liposomes and the way of introducing these antioxidants to the liposomes and its concentration (Schnitzer et al., 2007). The FA can promote lipid oxidation as it can reduce catalytic metals such as Fe3+ (using in the TBA method), regenerating Fe2+ that are involved in oxidation. These results are in concordance with the study made by Gupta et al. (2012) that showed a prooxidant action of FA with the TBA method.
Regarding the systems with FA and VE (with or without pasteurization),only the SPC system presented a significantly higher TBARS value in comparison with formulation without vitamins.In the other two systems, FA prooxidant effect would have been counteracted by the antioxidant action of the VE. Also, in the presence of VE, the system with FA had a good oxidative stability,demonstrating the feasibility of application in commercial chocolate milk