Oxidative stability and its relationship with natural antioxidants during refrigerated retail display of beef produced in Argentina

The objective of this study was to determine if pasture or grain diets affect oxidative/antioxidative status and the color stability of beef during retail display. Ten crossbreed steers were fed on pasture. Five of them were randomly assigned to remain on this diet, and the other five were finished...

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Veröffentlicht in:	Meat science 2008-07, Vol.79 (3), p.444-452
Hauptverfasser:	Insani, E.M., Eyherabide, A., Grigioni, G., Sancho, A.M., Pensel, N.A., Descalzo, A.M.
Format:	Artikel
Sprache:	eng
Schlagworte:	alpha-tocopherol antioxidant activity antioxidants Argentine beef beef beef cattle beef quality beta-carotene catalase cattle feeding color Color stability crossbreds discoloration enzyme activity feed conversion feed grains feedlots finishing food storage free radicals glutathione peroxidase grazing Lipid oxidation lipid peroxidation livestock and meat industry meat production oxidative stability Pasture and grain feeding pastures protein degradation Protein oxidation Retail display steaks steers storage temperature storage time superoxide dismutase
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Beschreibung
Zusammenfassung:	The objective of this study was to determine if pasture or grain diets affect oxidative/antioxidative status and the color stability of beef during retail display. Ten crossbreed steers were fed on pasture. Five of them were randomly assigned to remain on this diet, and the other five were finished on feedlot system (grain diet) during 110days until slaughter. Slices of Psoas major steaks were randomly distributed among retail display times (1, 3, 5, 7 and 9days). Lipid and protein oxidation were higher in Psoas major steaks from grain diet than in pasture diet (P
ISSN:	0309-1740 1873-4138
DOI:	10.1016/j.meatsci.2007.10.017