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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

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 [ver mas...]
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 [Cerrar]
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Author
Pouzo, Laura Beatriz;   Descalzo, Adriana Maria;   Zaritzky, Noemi Elisabet;   Rossetti, Luciana;   Pavan, Enrique;  
Fuente
Meat science 111 : 1-8. (January 2016)
Date
2016-01
ISSN
0309-1740
1873-4138
URI
https://www.sciencedirect.com/science/article/pii/S030917401530070X
http://hdl.handle.net/20.500.12123/2431
DOI
https://doi.org/10.1016/j.meatsci.2015.07.026
Formato
pdf
Tipo de documento
artículo
Palabras Claves
Buey; Bullocks; Pastoreo; Grazing; Alimentacion Complementaria; Supplementary Feeding; Maíz; Maize; Linaza; Linseed; Antioxidantes; Antioxidants; Novillo; Grano de Maíz; Semilla de Lino; Carne Madurada;
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Excepto donde se diga explicitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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