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ICE RECRYSTALLIZATION IN A MODEL SYSTEM AND IN FROZEN MUSCLE TISSUE.

Author(s) : MARTINO M. N., ZARITZKY N. E.

Type of article: Article

Summary

IN THE WORK RECRYSTALLIZATION WAS ANALYZED USING DIRECT MICROSCOPIC OBSERVATION OF ICE CRYSTALS IN A MODEL SOLUTION (0.28 N SODIUM CHLORIDE) AND INDIRECT OBSERVATION OF FROZEN MUSCLE TISSUE. THE MODEL SOLUTION ALLOWED VISUALIZATION OF THE INTERFACE BEHAVIOUR ; FROM THE ANALYSIS OF THE ICE CRYSTAL FREQUENCY DISTRIBUTIONS, RELATIONSHIPS BETWEEN SHAPE AND SIZE OF THE GRAINS WERE ESTABLISHED. VALUES OF THE KINETIC CONSTANTS DETERMINED AT DIFFERENT TEMPERATURES ALLOWED THE ESTIMATION OF THE PROCESS ACTIVATION ENERGY. IN MUSCLE TISSUES ISOTHERMAL FREEZE-SUBSTITUTION WAS USED TO OBSERVE THE HOLES LEFT BY THE ICE IN FROZEN SEMITENDINOUS BEEF MUSCLE STORED AT 268, 263, 258 AND 253 K (-5, -10, -15 AND -20 DEG C). A DIFFERENT EVOLUTION OF THE MEAN ICE CRYSTAL DIAMETER WAS OBSERVED WITH RESPECT TO THE MODEL SYSTEM. IN MEAT SAMPLES, AT LONG STORAGE TIMES, A LIMIT DIAMETER VALUE WAS REACHED.

Details

  • Original title: ICE RECRYSTALLIZATION IN A MODEL SYSTEM AND IN FROZEN MUSCLE TISSUE.
  • Record ID : 1990-0141
  • Languages: English
  • Source: Cryobiology - vol. 26 - n. 2
  • Publication date: 1989

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