Share

IIR document

DENATURATION OF SARCOPLASMIC PROTEINS DURING FROZEN STORAGE OF FISH.

Author(s) : BORRESEN T., KNUDSEN L. B., NIELSEN J.

Summary

THE COMPOSITION OF THE SARCOPLASMIC PROTEIN FRACTION IN FROZEN FISH MUSCLE IS UNDER CONTINUOUS CHANGE: INCREASED SALT CONCENTRATION, PH CHANGES, SOME PROTEINS INSOLUBILIZATION. OTHER PROTEINS BOUND IN ORGANELLES WILL ENTER A MORE FREELY SOLUBLE STATE DUE TO MEMBRANE DISRUPTIONS(METABOLIC ENZYMES IN MITOCHONDRIA, AND PROTEOLYTIC ENZYMES OF THE CATHEPSIN TYPE IN LYSOSOMES). IN THE PRESENT INVESTIGATION PROTEINS AND PEPTIDES SOLUBLE IN A CENTRIFUGED TISSUE FRACTION (CTF) HAVE BEEN STUDIED AFTER FROZEN STORAGE OF COD MUSCLE. THE NEW COMPONENTS WERE OBSERVED TO HAVE A MOLECULAR WEIGHT LOWER THAN 10,000. IT MAY BE SPECULATED THAT THESE COMPONENTS ARE RESULTING FROM PROTEOLYSIS IN THE FROZEN STATE. THE PROTEIN CHANGES AT 253 K (-20 DEG C) ARE PROGRESSING MUCH SLOWER THAN AT 263 K (-10 DEG C), BUT THE PATTERN OF CHANGE IS COMPARABLE.

Available documents

Format PDF

Pages: 1985-4

This document is to be digitised and will be available within 10 working days

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: DENATURATION OF SARCOPLASMIC PROTEINS DURING FROZEN STORAGE OF FISH.
  • Record ID : 1987-0593
  • Languages: English
  • Source: Storage lives of chilled and frozen fish and fish products.
  • Publication date: 1985
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles from the proceedings (51)
See the conference proceedings

Indexing