Thirty lambs were assigned to the following treatments: control diet (C) rich in omega-3 fatty acids; C plus 900ppm red wine extract (RWE), or C plus 300ppm vitamin E (VE). Oxidative stability and sensory properties of chops stored in MAP (70% O2/30% CO2) during 12days were evaluated. Chops from the VE group showed lower lipid oxidation (p<0.001) and protein carbonylation (p<0.05), stable omega-3 fatty acids proportions and overall liking sensory scores (p<0.05). Dietary RWE supplementation did not influence oxidative stability of chops, however levels of C20:5n-3 were greater (p<0.05) and n-6/n-3 ratio (p<0.01) was lower, relative to controls.
Keywords: Lipid oxidation; Omega-3 fatty acids; Polyphenols; Protein oxidation; Sensory evaluation.
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