Data/hora: 03/06/2024 12:55:18

Biblioteca(s): 	Embrapa Instrumentação.	
Data corrente: 	05/04/2021	
Data da última atualização: 	10/06/2022	
Autoria: 	CÔNSOLO, N. R. B.; ROSA, A. F.; BARBOSA, L. C. G. S.; MACLEAN, P. H.; HIGUERA-PADILLA, A.; COLNAGO, L. A.; TITTO, E. A. L.	
Afiliação: 	LUIZ ALBERTO COLNAGO, CNPDIA.	
Título: 	Preliminary study on the characterization of Longissimus lumborum dark cutting meat in Angus × Nellore crossbreed cattle using NMR-based metabolomics.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Meat Science, v. 172, 108350, 2021.	
ISSN: 	0309-1740	
DOI: 	https://doi.org/10.1016/j.meatsci.2020.108350	
Idioma: 	Inglês	
Conteúdo: 	The aim of this preliminary study was to evaluate meat quality properties, muscle metabolite profile and metabolic pathways associated with the occurrence of dark cutting meat in Angus x Nellore crossbreed cattle. After 14 days’ ageing, dark cutting meat presented a higher pH, lower cooking loss and colour parameters, and greater tenderness compared with normal meat. Dark cutting meat had a higher ATP level and lower concentrations of glucose-6-phosphate, lactate, glucose, serine, threonine, creatine phosphate, inosine, leucine, methionine, succinate and glucose-1-phosphate compared to normal meat. In dark cutting samples, the ultimate pH was positively correlated with carnitine and negatively correlated with glucose-6-phosphate. However, in normal meat, the ultimate pH presented a positive correlation with arginine, leucine, methionine, proline, threonine, tyrosine and valine. Pathway analysis showed that differentiation of the groups was linked to energetic pathways such as starch and sucrose metabolism, the pentose phosphate pathway, amino sugar, nucleotide sugar metabolism, and glycolysis or gluconeogenesis. In conclusion, the occurrence of dark cutting meat has a notable impact on meat quality attributes and concentrations of post-mortem glycolytic metabolites, appears to be correlated with mitochondrial activity and affects energetic metabolic pathways.	
Palavras-Chave: 	NMR spectroscopy.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Instrumentação (CNPDIA)	
Exemplares: 	CNPDIA - (17743-1) - UPC - AP - DD - PROCI.21/08 -  - 2021/08 - DIS