Lipid oxidation was monitored as TBARs throughout the storage
period of 25 days at the surface (S) and the inner part (I) of the
chicken breast patties packaged in standard packaging (control,
C) or in antioxidant active packaging (AP), and HP treated
(800 MPa, 10 min) (Fig. 1). The initial levels of oxidation at day 1
can be divided according to decreasing oxidation level:
CS > CI = APS > API (>means significant (p < 0.05) difference between
the groups, whereas, = means no mutual difference between
groups), though, the TBARS values are rather low. Packaging without
or with antioxidant film changed the order of the oxidation levels
of chicken breast patties during the subsequent chill storage
(day 3) into CS > APS = API = CI, indicating low levels of oxidation.
Remarkably, the level of lipid oxidation in the surface of the patties
packed without antioxidant (CS) was significantly higher than the
rest of samples throughout the storage period. Contrary, it was also
observed that the level of lipid oxidation in the inner part in the active
packaging (API) tended to be lower than in the control patties.
At day 25 the oxidation levels were statistically grouped into
(decreasing order): CS > CI = APS > API. The observed decrease in
the level of lipid oxidation for the control-surface part at the end
of storage can be explained by a decomposition of the secondary
lipid oxidation products and by binding of those to the meat proteins