Journal
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
Volume 32, Issue 7, Pages 1036-1043Publisher
ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOC
DOI: 10.5713/ajas.18.0531
Keywords
Beef; Meat Quality; Myoglobin; Nellore; Oxidation
Categories
Funding
- National Council for Scientific and Technological Development (CNPq), Brazil [400136/2014-7, 311422/2016-0]
- Carlos Chagas Filho Research Foundation (FAPERJ), Brazil [E-26/010.001703/2015, E-26/010.001547/2016, E-26/203.049/2017]
- Coordination of Improvement of Higher Education Personnel (CAPES), Brazil [001]
- Coordination for the Improvement of Higher Level Personnel (CAPES), Brazil [88881.133504/2016-01]
- CNPq Special Visiting Researcher fellowship through the Science without Borders program [303477/2014-8]
- National Institute of Food and Agriculture, U.S. Department of Agriculture, Hatch-Multistate Project [1014747]
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Objective: To investigate the color and oxidative stabilities of longissimus lumborum (LL) and psoas major (PM) muscles from grain-finished Bos indicus cattle in Brazil. Methods: The LL and PM muscles were obtained 24 h post-mortem from eight (n = 8) Nellore bull carcasses, fabricated into 1.5-cm steaks, aerobically packaged, and stored at 4 degrees C for nine days. Steaks were analyzed for myoglobin concentration, pH, instrumental color, metmyoglobin reducing activity (MRA) and lipid oxidation. Results: The LL steaks exhibited greater (p<0.05) redness, color stability, and MRA than their PM counterparts on days 5 and 9. The LL and PM steaks demonstrated similar (p>0.05) lightness and yellowness on days 0, 5, and 9. On the other hand, PM steaks exhibited greater (p<0.05) myoglobin concentration, pH, and lipid oxidation than their LL counterparts. Conclusion: These results indicated that muscle source influenced the color and oxidative stabilities of beef from grain-finished Bos indicus animals. These results highlighted the necessity of muscle-specific strategies to improve the color stability of beef from grain-fed Bos indicus cattle.
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