Concentration of antioxidants in two muscles of mature dairy cows from Azores.

Autor: Roseiro LC; Instituto Nacional de Investigação Agrária e Veterinária, I.P., Unidade Estratégica de Investigação e Serviços de Tecnologia e Segurança Alimentar, Campus do IAPMEI, Edifício S, Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, Portugal. Electronic address: cristina.roseiro@iniav.pt., Santos C, Gonçalves H, Moniz C, Afonso I, Tavares M, da Ponte DJ
Jazyk: angličtina
Zdroj: Meat science [Meat Sci] 2014 Feb; Vol. 96 (2 Pt A), pp. 870-5. Date of Electronic Publication: 2013 Sep 13.
DOI: 10.1016/j.meatsci.2013.09.005
Abstrakt: This study evaluated the concentrations of α-tocopherol, β-carotene, creatine, carnosine, anserine and coenzyme Q10 in Longissimus dorsi (Ld) and Gluteus medius (Gm) muscles of culled dairy cows and the impact of age, production status before slaughter (dry-off vs lactating) and carcass weight on them. The effects of applying a finishing feeding regimen before slaughter were also examined. Gm muscle presented higher levels (P<0.001) of α-tocopherol (5.14 vs 3.61 μg · g(-1)) β-carotene (0.36 vs 0.27 μg · g(-1)), anserine (59.24 vs 43.25 mg · 100 g(-1)) and coenzyme Q10 (3.33 vs 1.73 mg · 100 g(-1)), and by contrast lower (P<0.05) creatine concentration (502.40 vs 527.28 mg · 100 g(-1)) than Ld. Dry-off and lactating cows differed significantly in α-tocopherol level (P<0.001) but not in the concentrations of the other compounds (P>0.05). The finishing feeding promoted higher mean concentrations of anserine and creatine but lower carnosine values (P>0.05) than directly slaughtered dry-off cows. The variation between muscles and from animal-to-animal makes it difficult to exactly define the antioxidant status of the dairy cow's meat.
(© 2013.)
Databáze: MEDLINE
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