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Related Experiment Video

Updated: Jun 13, 2026

Exploring the Longissimus Muscle: Unraveling its Correlation with Meat Quality in Bos indicus and Crossbred Bulls
07:46

Exploring the Longissimus Muscle: Unraveling its Correlation with Meat Quality in Bos indicus and Crossbred Bulls

Published on: July 12, 2024

Microstructural changes in m. rectus abdominis bovine muscle after heating.

Thierry Astruc1, Philippe Gatellier, Roland Labas

  • 1INRA de Clermont-Ferrand-Theix, UR370 QuaPA, F-63122 St Genès Champanelle, France. thierry.astruc@clermont.inra.fr

Meat Science
|May 4, 2010
PubMed
Summary

Heating beef muscle causes significant fiber shrinkage and gaps between myofibrils, with structural changes stabilizing quickly. Differences in muscle fiber composition influence denaturation rates during thermal processing.

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Area of Science:

  • Food Science
  • Microscopy
  • Muscle Biology

Background:

  • Beef muscle undergoes microstructural changes during thermal processing.
  • Understanding these changes is crucial for predicting texture and quality.

Purpose of the Study:

  • To characterize histological and ultrastructural changes in beef muscle after heating.
  • To investigate the effects of different heating times and temperatures on muscle fiber morphology.

Main Methods:

  • Histological and transmission electron microscopy of beef rectus abdominis muscle.
  • Samples were heated at 100°C (15-60 min) and 270°C (1 min).

Main Results:

  • Heating at 100°C for 15 min caused 48% lateral fiber shrinkage and 27% increase in myofibrillar gaps.

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Immunolabelling Myofiber Degeneration in Muscle Biopsies
06:37

Immunolabelling Myofiber Degeneration in Muscle Biopsies

Published on: December 5, 2019

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Last Updated: Jun 13, 2026

Exploring the Longissimus Muscle: Unraveling its Correlation with Meat Quality in Bos indicus and Crossbred Bulls
07:46

Exploring the Longissimus Muscle: Unraveling its Correlation with Meat Quality in Bos indicus and Crossbred Bulls

Published on: July 12, 2024

Immunolabelling Myofiber Degeneration in Muscle Biopsies
06:37

Immunolabelling Myofiber Degeneration in Muscle Biopsies

Published on: December 5, 2019

  • Further heating duration showed minimal additional changes.
  • Myofibril-sarcolemma detachments and granular aggregates were observed.
  • Heterogeneity in fiber response suggests cytoskeleton protein differences.

    • Conclusions:

    • Beef muscle microstructural changes during heating stabilize rapidly.
    • Cytoskeleton protein composition influences fiber denaturation and shrinkage rates.
    • High-temperature, short-time heating yields similar ultrastructural changes to prolonged lower-temperature heating.