Protein oxidation measured as carbonyl concentration did not
differ significantly between treatments (Table 2). However, there
were differences between animals across treatments (range 1.80–
2.63 nmol/mg protein; P=0.024).
The content of α-tocopherol did not change with ageing time in
vacuum (Table 2). However, when the steaks were packaged in MAP
the α-tocopherol content decreased compared to vacuum and day 0
steaks. Steaks packed in vacuum for 5 days and then in MA for 10 days
had the lowest α-tocopherol content of all steaks.