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Antioxidant status, lipid and color stability of aged beef from grazing steers supplemented with corn grain and increasing levels of flaxseed

Pouzo L.B., Descalzo Adriana Maria, Zaritzky N.E., Rossetti Luciana, Pavan E.. 2016. Antioxidant status, lipid and color stability of aged beef from grazing steers supplemented with corn grain and increasing levels of flaxseed. Meat Science, 111 : pp. 1-8.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q1, Sujet : FOOD SCIENCE & TECHNOLOGY

Abstract : Angus steers were grazed on unsupplemented pasture (CNTRL), pasture supplemented with 0.7% BW cracked corn (FLAX-0), FLAX-0 with 0.125% and 0.250% BW of whole flaxseed (FLAX-1 and FLAX-2). Six steers were grazed per treatment for 70 days, with start and finish weights of 458 and 508 kg. At 24 h post slaughter, longissimus thoracis were harvested, and steaks assigned to treatments of postmortem aging time under vacuum (PM; 3, 14 and 56 days) with or without five days of aerobic exposure (AE). Meat antioxidant status was higher (P < 0.05) when feeding CNTRL and FLAX-1 than FLAX-0 and FLAX-2. Under AE, lipid oxidation was highest for FLAX-2 (P < 0.05), and lowest for FLAX-1. Greatest TBARs and lowest antioxidant capacity and redness values were obtained with AE and the longer PM (P < 0.05). Beef oxidative stability through AE improved by adding a low flaxseed level to supplemented corn grain, but deteriorated by adding a high flaxseed level or by extending PM. (Résumé d'auteur)

Mots-clés Agrovoc : Viande bovine, Antioxydant, Stabilité oxydative, Couleur, Teneur en lipides, Composition chimique, Alimentation des animaux, Vieillissement, maïs, Complément alimentaire pour animaux, Graine oléagineuse, Graine de lin, Tocophérol, Carotène, Oxydation biochimique

Mots-clés géographiques Agrovoc : Argentine

Classification Agris : L02 - Animal feeding
Q04 - Food composition

Champ stratégique Cirad : Axe 3 (2014-2018) - Alimentation durable

Auteurs et affiliations

  • Pouzo L.B., CONICET (ARG)
  • Descalzo Adriana Maria, CIRAD-PERSYST-UMR Qualisud (FRA)
  • Zaritzky N.E., CONICET (ARG)
  • Rossetti Luciana, CIRAD-PERSYST-UMR Qualisud (FRA)
  • Pavan E., INTA (ARG)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/580139/)

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