The retail pork samples were placed in M71-51A Black MAPET trays
(oxygen permeability: 0.63 cm3/tray/24 h/atm) sealed with either of
four gas mixtures (Table 1) under a TOPSEAL.PET.MAP.P.B.AF.62
film (oxygen permeability: 0.3 cm3/m2/24 h/atm) and stored at 5 °C
for 2, 5 and 7 days under 1200 lx fluorescent light (Certus T5,
Riegens, Denmark). Trays and filmwere fromFærch Plast (Holstebro,
Denmark). Upon reaching the target time point, samples were vacuum-packed and stored at −80 °C until further analyses were
performed.