Post-slaughter changes in ATP metabolites, Reducing and phosphorylated sugars in chicken meat

Michel Aliani, Linda J. Farmer, James T. Kennedy, Bruce T. Moss, Alan Gordon

Research output: Contribution to journalArticle

21 Citations (Scopus)
457 Downloads (Pure)

Abstract

The formation of ATP breakdown products in chicken M. pectoralis major post-slaughter is reported. The concentrations of metabolites were followed in chicken breast throughout the carcass processing post-slaughter and during chilled storage. The concentration of glucose remains similar throughout the period whilst that of glucose-6-phosphate decreases linearly. Glucose and glucose-6-phosphate concentrations were inversely related to the pHu of the breast meat throughout chilled storage. Rapid post-mortem glycolysis and high pHu values suggest the occurrence of stress at and pre-slaughter. Whilst ATP, ADP and AMP were rapidly broken down, the concentration of IMP rose rapidly and remained high. Concentrations of inosine, ribose and hypoxanthine increased gradually post-slaughter but an initial increase in ribose phosphate was not sustained. Most of the potential ribose present in chicken meat, believed to be important for flavor formation, remains bound in the form of inosine and IMP. There is evidence that additional breakdown pathways for ribose and ribose-5-phosphate may deplete the concentrations of these precursors.
Original languageEnglish
Pages (from-to)55-62
Number of pages8
JournalMeat Science
Volume94
Issue number1
Early online date19 Nov 2012
DOIs
Publication statusPublished - May 2013

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