The level of cholesterol oxidized products (COPs) in meatball lipids
(Table 4) increased with storage time; however, the addition of antioxidants
slowed down the process. In the samples almost all the analyzed
COPs were detected after 1 day of storage. After 7 days of storage the
total amount of cholesterol oxidation products ranged from 0.88 to
0.98 mg/100 g lipid and accounted for 0.24–0.27% of the initial cholesterol
content.