The aim of this study was therefore to investigate oxidation, and
especially protein oxidation, of two common retail pork products,
i.e. Longissimus thoracis et lumborum (LTL) steaks and minced pork,
packaged in MAP with a step-wise increasing oxygen concentration,
under conditions mimicking retail packaging and storage. Furthermore,
the retail products were characterised in terms of fat and α-tocopherol
content, myoglobin content, fatty acid composition and presence of
oxidative type-I muscle fibres. Protein oxidation markers (free thiol,
SDS-PAGE, myosin blot, and oxidised protein blot) and secondary
lipid oxidation markers (TBARS) were determined for different O2
concentrations and compared between LTL steaks and pork mince.