Effect of dietary supplementation with rosemary extract and alpha-tocopheryl acetate on lipid oxidation in eggs enriched with omega3-fatty acids.
The antioxidant effect of dietary supplementation with 500 or 1,000 mg/kg of a commercial rosemary extract vs. 200 mg/kg of alpha-tocopheryl acetate (alpha-TA) on the lipid oxidative stability of omega3-fatty acid (FA)-enriched eggs was compared. Lipid oxidation was measured in fresh eggs by the lipid hydroperoxide level and malonaldehyde content. Stability to iron-induced lipid oxidation was also measured. Results showed the clear antioxidant effect of dietary alpha-TA supplementation on omega3-FA enriched eggs. In contrast, dietary supplementation with rosemary extract showed no effect on any of the lipid oxidation parameters evaluated.
Galobart
J
J
Unitat de Nutrició i Alimentació Animals, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Spain.
Barroeta
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AC
Baucells
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MD
Codony
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Ternes
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D000818:Animals; D002645:Chickens / Q000378:metabolism* / Q000502:physiology; D019587:Dietary Supplements; D004531:Eggs / Q000032:analysis*; D015525:Fatty Acids, Omega-3 / Q000032:analysis / Q000378:metabolism*; D005260:Female; D019686:Lamiaceae / Q000737:chemistry; D050356:Lipid Metabolism; D015227:Lipid Peroxidation / Q000502:physiology*; D010058:Oviposition; D010084:Oxidation-Reduction; D024505:Tocopherols; D014810:Vitamin E / Q000008:administration & dosage* / Q000031:analogs & derivatives / Q000032:analysis*; D024502:alpha-Tocopherol / Q000031:analogs & derivatives*
D015525:Fatty Acids, Omega-3; D014810:Vitamin E; D024502:alpha-Tocopherol; D024505:Tocopherols