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GEL ELECTROPHORETIC ANALYSIS OF THE PROTEIN CHANGES IN GROUND BEEF STORED AT 275 K (2 DEG C).

Author(s) : XIONG Y. L., ANGLEMIER A. F.

Type of article: Article

Summary

PURIFIED MYOFIBRILS AND SARCOPLASMIC PROTEINS WERE PREPARED FROM GROUND (GR) AND INTACT (CON) BEEF SEMITENDINOSUS MUSCLE SAMPLES AFTER 0, 1, 3, 6, AND 10 DAYS OF STORAGE AT 275 K. SDS-POLYACRYLAMIDE GEL ELECTROPHORESIS ANALYSIS REVEALED THE FOLLOWING MAJOR POSTMORTEM CHANGES IN GR SAMPLES: THE GRADUAL DISAPPEARANCE OF NEBULIN AND DESMIN, AND AN INCREASED CONTENT OF MYOSIN. ALSO NOTED WAS EMERGENCE OF POLYPEPTIDES AND DIMINUTION OF PROTEIN IN THE SARCOPLASMIC FRACTION. SINCE GR SAMPLES SHOWED PROTEOLYTIC CHANGES SIMILAR TO THOSE OF CON SAMPLES, IT WAS CONCLUDED THAT GRINDING HAD LITTLE EFFECT ON POSTMORTEM MUSCLE PROTEIN DEGRADATION.

Details

  • Original title: GEL ELECTROPHORETIC ANALYSIS OF THE PROTEIN CHANGES IN GROUND BEEF STORED AT 275 K (2 DEG C).
  • Record ID : 1990-0652
  • Languages: English
  • Publication date: 1989
  • Source: Source: J. Food Sci.
    vol. 54; n. 2; 1989.03-04; 287-290; 3 fig.; 33 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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