Fecha/hora: 01/06/2024 10:24:10

Biblioteca(s): 	INIA Tacuarembó.	
Fecha corriente: 	14/06/2016	
Fecha de la última actualización: 	11/03/2021	
Autoria: 	LUZARDO, S.; WOERNER, D.R.; GEORNARAS, I.; ENGLE, T.E.; DELMORE, R.J.; HESS, A.M.; BELK, K.E.	
Afiliación: 	SANTIAGO FELIPE LUZARDO VILLAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; D. R. WOERNER, Center for Meat Safety and Quality, Colorado State University.; I. GEORNARAS, Center for Meat Safety and Quality, Colorado State University.; T. E. ENGLE, Department of Animal Sciences, Colorado State University.; R. J. DELMORE, Center for Meat Safety and Quality, Colorado State University.; A. M. HESS, Department of Statistics, Colorado State University.; K. E. BELK, Center for Meat Safety and Quality, Colorado State University.	
Título: 	Effect of packaging during storage time on retail display shelf life of longissimus muscle from two different beef production systems.	
Año de publicación: 	2016	
Fuente/Imprenta: 	Journal of Animal Science, 2016, v. 94, p. 2614-2623. Doi: https://doi.org/10.2527/jas.2016-0305	
DOI: 	10.2527/jas2016-0305	
Idioma: 	Inglés	
Notas: 	Article history:Received January 14, 2016; Accepted March 25, 2016.	
Contenido: 	Two studies were conducted to evaluate the influence of packaging and production system (PS) on retail display life color (L*, a*, and b*), fatty acid profile (% of total fatty acids), lipid oxidation (thiobarbituric acid reactive substances; mg malondialdehyde/kg of muscle), vitamin E content (&#956;g/g of muscle), and odor (trained panelists) during storage of LM. Four (or 3) different packaging treatments were applied to LM from steers fattened on grazing systems (Uruguayan) or on high-concentrate diets (U.S.). From fabrication to application of treatments, Uruguayan LM were vacuum packaged for air shipment and U.S. LM were also vacuum packaged and kept in a cooler until Uruguayan samples arrived. Treatments were applied 7 d after slaughter. In Exp. 1, treatments were vacuum packaging (VP), lowoxygen (O2) modified atmosphere packaging (MAP) with nitrogen (N2) and carbon dioxide (MAP/CO2), low-O2 MAP with N2 plus CO2 and carbon monoxide (MAP/CO), and VP plus an application of peroxyacetic acid (VP/PAA). In Exp. 2 block 1, treatments were VP, MAP/CO, and VP with ethyl-N-lauroyl-l-arginate HCl incorporated into the film as an antimicrobial agent (VP/AM). In Exp. 2 block 2, treatments were VP, MAP/CO2, MAP/CO, and VP/AM. After 35 d storage, steaks were evaluated during simulated retail display for up to 6 d. In Exp. 1, Uruguayan steaks under MAP/CO had greater (P < 0.05) a* values than VP/PAA and MAP/CO2 on d 6 of display. For U.S. beef, the MAP/CO had the reddest lean color (P < 0.05) compared with the other 3 packaging treatments on d 6 of display in Exp. 1. Packaging × PS × time interaction was significant (P < 0.05) in Exp. 1. In Exp. 2, MAP/CO in Uruguayan steaks also had the greatest a* values on d 6 of display, but no differences (P > 0.05) were detected among both VP and MAP/CO in U.S. steaks at this time. No significant (P > 0.05) packaging × PS × time interaction was observed in Exp. 2. Only PS (both xperiments) and time (Exp. 1) affected (P < 0.05) L* values. In both experiments, U.S. steaks had greater (P < 0.05) L* values than Uruguayan steaks. Vitamin E content in Uruguayan steaks was greater (P < 0.05) than in U.S. steaks. Packaging × PS, PS × time, and packaging × PS × time interactions were not significant (P > 0.05) for any of the fatty acids. Beef from Uruguayan had lower (P < 0.05) SFA and MUFA and greater (P < 0.05) PUFA and n-6 and n-3 fatty acid percentages than U.S. beef. Complexity of fresh meat postmortem chemistry warrants a more comprehensive approach to maximize shelf life.	
Palabras-Clave: 	BEEF LONGISSIMUS MUSCLE; BEEF PRODUCTION; CHEMICAL ANALYSES; COLOR; MEAT; PACKAGING; PRODUCTION SYSTEM.	
Thesagro: 	ACIDOS GRASOS; ANALISIS; CARNE; COLOR; ENVASADO.	
Categoría del tema: 	Q01 Ciencia y tecnología de los alimentos	
Registro original: 	INIA Tacuarembó (TBO)	
Ejemplares: 	TBO - (101244-1) - PXI - AP - DD -  -  -  - DIS