Color and Heat Denaturation of Myoglobin Forms in Ground Beef

: To determine the effects of myoglobin forms on internal cooked color in ground beef, patties containing predominantly deoxy-(DMb), oxy-(OMb), or metmyoglobin (MMb) were cooked to 55, 65, or 75 °C. Only patties with DMb appeared red and undercooked at 55 °C, and their color became progressively more brown at 65 and 75 °C. Patties with OMb and MMb were brown at 55 °C and could be mistakenly perceived as being cooked enough to consume. Judging the doneness of ground beef using internal cooked color alone would be valid only if the pigment at time of cooking was predominantly DMb. In model studies, DMb had greater thermal stability than MMb especially at higher pH.

[1]  Richard Earl Dickerson,et al.  Hemoglobin : structure, function, evolution, and pathology , 1983 .

[2]  D. Cornforth,et al.  Color — its basis and importance , 1994 .

[3]  M. Hunt.  Guidelines for Meat Color Evaluation , 2001 .

[4]  M. Solomon,et al.  Variations in Internal Color of Cooked Beef Patties , 1996 .

[5]  V. T. Mendenhall,et al.  Effect of pH and Total Pigment Concentration on the Internal Color of Cooked Ground Beef Patties , 1989 .

[6]  M. Solomon,et al.  Effect of Precooking Conditions on Color of Cooked Beef Patties ‡. , 1996, Journal of food protection.

[7]  M. Hunt,et al.  CHEMICAL PROPERTIES OF GROUND BEEF PATTIES EXHIBITING NORMAL AND PREMATURE BROWN INTERNAL COOKED COLOR , 1996 .

[8]  Donald H. Kropf,et al.  Myoglobin Oxidative State Affects Internal Cooked Color Development in Ground Beef Patties , 1996 .

[9]  T. R. Dutson,et al.  Quality Attributes and their Measurement in Meat, Poultry and Fish Products , 1995, Advances in Meat Research.

[10]  E. Slinde,et al.  Color of Black Salami Sausage: Dissociation of Heme from Myoglobin and Hemoglobin , 1987 .

[11]  R. D. King,et al.  The kinetics of cooked meat haemoprotein formation in meat and model systems. , 1998, Meat science.

[12]  S. S. Arya,et al.  Technical note: Precursors of carbonyls in chapaties , 1976 .

[13]  H. Martens,et al.  INFLUENCE OF WATER CONTENT ON THE STABILITY OF MYOGLOBIN TO HEAT TREATMENT , 1976 .

[14]  S. Machlik.  THE EFFECT OF HEAT ON BOVINE MYOGLOBIN DERIVATIVES IN MODEL SYSTEMS AND IN BEEF SEMITENDINOSUS MUSCLE , 1965 .

[15]  G. Trout.  The rate of metmyoglobin formation in beef, pork, and turkey meat as influenced by pH, sodium chloride, and sodium tripolyphosphate. , 1990, Meat science.

[16]  G. Trout.  Variation in Myoglobin Denaturation and Color of Cooked Beef, Pork, and Turkey Meat as Influenced by pH, Sodium Chloride, Sodium Tripolyphosphate, and Cooking Temperature , 1989 .

[17]  R. Buchanan,et al.  Foodborne Disease Significance of Escherichia coli O157:H7 and Other Enterohemorrhagic E. coli , 1997 .

[18]  M. Brunori,et al.  Enzyme Proteins. (Book Reviews: Hemoglobin and Myoglobin in Their Reactions with Ligands) , 1971 .

[19]  Curtis L. Kastner,et al.  Endpoint temperature, internal cooked color, and expressible juice color relationships in ground beef patties , 1994 .

[20]  M. Hunt,et al.  Display Life and Internal Cooked Color of Ground Beef from Vitamin E‐Supplemented Steers , 1995 .

[21]  W. Horwitz.  Official Methods of Analysis , 1980 .

[22]  I. M. Oellingrath.  Heat Degradation of Heme in Methemoglobin and Metmyoglobin Model Systems Measured by Reversed‐Phase Ion‐Pair High Performance Liquid Chromatography , 1988 .