Characteristics of pale, soft, exudative broiler breast meat.

The objective of the study was to characterize pale breast meat, compare it with normal colored breast meat, and determine whether it should be considered pale, soft, and exudative (PSE). Characteristics of 20 normal and 20 pale broiler breasts, obtained at a commercial slaughter plant, were evaluated. Compared with normal meat, the pale breast meat had a significantly (P < 0.05) lower pH (5.7 vs. 5.9), higher color L* value (60.0 vs. 55.1), higher drip loss (1.34 vs. 0.87%), lower marinade uptake (31.2 vs. 44.3%), and lower cooking yields (95.2 vs. 105.8%). Protein solubility in pale samples was slightly (P < 0.05) lower than in normal samples, which suggests increased protein denaturation in the pale breasts. Correlations between pH and L* value (r = -0.76), pH and marinade uptake (r = 0.64), sarcoplasmic protein solubility and L* value (r = -0.71), and sarcoplasmic protein solubility and moisture uptake (r = 0.66) and cooking yield (r = 0.66) were significant (P < 0.05). Correlations between total protein solubility and moisture uptake or cooking yields were not significant. The low ultimate pH of pale breast muscle appears to be the main determinant of its low water-holding capacity (WHC). This lower pH was unrelated to a higher lactate concentration or glycolytic potential of the pale muscle. Further research is needed to determine the causes of the low pH and possible measures to increase the pH (and functionality) of pale broiler breast muscle. Because the pale breast muscle has a low WHC, it can be considered PSE.

[1]  T. Grey,et al.  The influence of death struggle on the rate of glycolysis in chicken breast muscle. , 1974, Journal of the science of food and agriculture.

[2]  A. Sosnicki,et al.  Effect of rapid rigor mortis processes on protein functionality in pectoralis major muscle of domestic turkeys. , 1997, Journal of animal science.

[3]  J. Fritz,et al.  Factors affecting polyacrylamide gel electrophoresis and electroblotting of high-molecular-weight myofibrillar proteins. , 1989, Analytical biochemistry.

[4]  H J Swatland,et al.  A review of the relationships of pH with physical aspects of pork quality. , 1988, Meat science.

[5]  P. Koolmees,et al.  Accuracy and Utility of Sarcomere Length Assessment by Laser Diffraction , 1986 .

[6]  A. Gornall,et al.  Determination of serum proteins by means of the biuret reaction. , 1949, The Journal of biological chemistry.

[7]  S. Barbut.  ESTIMATING THE MAGNITUDE OF THE PSE PROBLEM IN POULTRY , 1998 .

[8]  Shai Barbut,et al.  Estimates and detection of the PSE problem in young turkey breast meat , 1996 .

[9]  R. G. Kauffman,et al.  Muscle protein changes post mortem in relation to pork quality traits. , 1997, Meat science.

[10]  K. Honikel,et al.  Sarcomere shortening of prerigor muscles and its influence on drip loss. , 1986, Meat science.

[11]  G. Monin,et al.  Influence of breed and muscle metabolic type on muscle glycolytic potential and meat pH in pigs. , 1987, Meat science.

[12]  J. R. Bendall,et al.  Some Properties of the Fibrillar Proteins of Normal and Watery Pork Muscle , 1962 .

[13]  J. E. Webb,et al.  EFFECT OF ELECTRICAL STUNNING ON POSTMORTEM BIOCHEMICAL CHANGES AND TENDERNESS IN BROILER BREAST MUSCLE , 1979 .

[14]  D. L. Fletcher,et al.  The Effect of Hot Boning Broiler Breast Meat Muscle on Postmortem pH Decline , 1984 .

[15]  S. Barbut.  Occurrence of pale soft exudative meat in mature turkey hens. , 1997, British poultry science.

[16]  P. Knight,et al.  structural basis of water-holding in meat. 1. General principles and water uptake in meat processing , 1988 .

[17]  R. Lawrie.  Post mortem glycolysis in normal and exudative longissimus dorsi muscles of the pig in relation to socalled white muscle disease. , 1960, Journal of comparative pathology.

[18]  R. Scopes.  The influence of post-mortem conditions on the solubilities of muscle proteins. , 1964, The Biochemical journal.

[19]  J. Wismer‐Pedersen.  QUALITY OF PORK IN RELATION TO RATE OF pH CHANGE POST MORTEM , 1959 .

[20]  S. Brown,et al.  The relationships between initial pH, reflectance and exudation in pig muscle. , 1987, Meat science.

[21]  R. G. Kauffman,et al.  Is colour brightness (L-value) a reliable indicator of water-holding capacity in porcine muscle? , 1994, Meat science.

[22]  S. Barbut.  Colour measurements for evaluating the pale soft exudative (PSE) occurrence in turkey meat , 1993 .

[23]  P. Warriss,et al.  The use of muscle protein solubility measurements to assess pig lean meat quality. , 1989, Meat science.