Abstract
The oxidation of the lipids and myoglobin of ground pork meat stored in oxygen- and carbon dioxide-enriched atmospheres at 1 °C has been studied. Elevated oxygen levels (80–100%) depressed myoglobin oxidation, increasing the time to 50% metmyoglobin formation from four to about thirteen days. Twenty per cent carbon dioxide greatly reduced the rate of lipid oxidation, extending the time to reach a TBA number of 5 from five to about twelve days. Tocopherol and ascorbic acids were efficient inhibitors of lipid oxidation but citric acid was not.
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