Data/hora: 24/09/2024 06:31:17

Biblioteca(s): 	Embrapa Pecuária Sudeste.	
Data corrente: 	23/08/2011	
Data da última atualização: 	21/07/2022	
Autoria: 	NASSU, R. T.; DUGAN, M. E. R.; JUÁREZ, M.; BASARAB, J. A.; BARON, V. S.; AALHUS, J. L.	
Afiliação: 	RENATA TIEKO NASSU, CPPSE; M. E. R. DUGAN, Agriculture and Agri-Food Canada, Lacombe Research Centre; M. JUÁREZ, Agriculture and Agri-Food Canada, Lacombe Research Centre; J. A. BASARAB, Alberta Agriculture and Rural Development, Lacombe Research Centre; V. S. BARON, Agriculture and Agri-Food Canada, Lacombe Research Centre; J. L. AALHUS, Agriculture and Agri-Food Canada, Lacombe Research Centre.	
Título: 	Effect of a-tocopherol tissue levels on beef quality.	
Ano de publicação: 	2011	
Fonte/Imprenta: 	Animal, v. 5, n. 12, p. 2010-2018, December 2011.	
DOI: 	10.1017/S1751731111001182	
Idioma: 	Inglês	
Conteúdo: 	To evaluate meat quality of beef with different a-tocopherol tissue levels, 55 feedlot steers were fed a barley-based &#64257;nisher diet with four vitamin E supplementation levels (0, 350, 700 and 1400 IU DL-a-tocopheryl acetate/animal per day) for 120 days. Although the increase in oxidation levels overtime was much smaller (P , 0.001) in the high-medium and high groups, a-tocopherol tissue levels did not affect (P . 0.05) pH, proximate analysis, drip and cooking losses, and shear force of steaks. No effect of a-tocopherol tissue levels was found in retail evaluation of steaks after a short ageing time of 6 days, but with 21 days of ageing, a delay in formation of metmyoglobin (P 5 0.008) was observed in steaks with higher tissue levels of a-tocopherol. Similar results were found for ground beef (25% fat) prepared from 6-day aged meat. Thus, higher a-tocopherol tissue levels protect ground beef and long-aged steaks from discolouration and lipid oxidation.	
Palavras-Chave: 	Ageing; Tenderness.	
Thesaurus Nal: 	beef; vitamin E.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal
Q Alimentos e Nutrição Humana	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/40361/1/PROCI-00089.pdf	
Registro original: 	Embrapa Pecuária Sudeste (CPPSE)	
Exemplares: 	CPPSE - (20541-1) - UPC - AP - DD - PROCI-2011.00089 - NAS - 2011.00089 - DIS
CPPSE - (21068-1) - UPC - AP - DD - PROCI-2012.00028 - NAS - 2012.00028 - DIS