The effects of feeding composition on the photosensitized oxidation of lipids from beef meat, were evaluated
during storage under commercial retail conditions. Feeding was enriched with linseed oil (LO), Dl-α tocopheryl
acetate (vE) and conjugated linoleic acid (CLA) at different doses and provided for diverse periods, resulting in 7
diet groups (A–G). After slaughtering and 2 weeks of holding period, meat slices were packed in vessels with
transparent shrink film and exposed towhite fluorescent light for 8 h at 8 °C. Total cholesterol oxidation products
(COPs) level varied from4.0 to 13.0 μg/g of lipids,which corresponded to 0.1–0.6% oxidized cholesterol. The lowest
peroxide value (PV) was found in the diet added with vE and LO for 90 days. Light exposure only had a
significant impact on thiobarbituric acid reactive substances (TBARs). In general, Dl-α tocopheryl acetate supplemented
for 90 days improved the oxidative stability of beef meat stored under commercial retail conditions.
The effects of feeding composition on the photosensitized oxidation of lipids from beef meat, were evaluatedduring storage under commercial retail conditions. Feeding was enriched with linseed oil (LO), Dl-α tocopherylacetate (vE) and conjugated linoleic acid (CLA) at different doses and provided for diverse periods, resulting in 7diet groups (A–G). After slaughtering and 2 weeks of holding period, meat slices were packed in vessels withtransparent shrink film and exposed towhite fluorescent light for 8 h at 8 °C. Total cholesterol oxidation products(COPs) level varied from4.0 to 13.0 μg/g of lipids,which corresponded to 0.1–0.6% oxidized cholesterol. The lowestperoxide value (PV) was found in the diet added with vE and LO for 90 days. Light exposure only had asignificant impact on thiobarbituric acid reactive substances (TBARs). In general, Dl-α tocopheryl acetate supplementedfor 90 days improved the oxidative stability of beef meat stored under commercial retail conditions.
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