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Microstructure alterations in beef intramuscular connective tissue caused by hydrodynamic pressure processing.

H Zuckerman1, B C Bowker, J S Eastridge

  • 1USDA Agricultural Research Service, 10300 Baltimore Ave., Bldg. 201 BARC-East, Beltsville, MD 20705, USA.

Meat Science
|June 28, 2013
PubMed
Summary
This summary is machine-generated.

Hydrodynamic pressure processing (HDP) tenderizes beef by disrupting collagen structures. This meat tenderization method, particularly with plastic containers, significantly reduces shear force and alters connective tissue integrity.

Keywords:
BeefConnective tissueHydrodynamic pressure processingTenderization

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Area of Science:

  • Food Science
  • Materials Science
  • Biophysics

Background:

  • Intramuscular connective tissue influences meat tenderness.
  • Hydrodynamic pressure processing (HDP) is a novel meat tenderization technique.
  • Understanding HDP's effect on collagen is crucial for optimizing meat quality.

Purpose of the Study:

  • To investigate microstructural changes in beef connective tissue after HDP treatment.
  • To evaluate the impact of different HDP processing units (plastic container vs. commercial unit) on meat tenderness.
  • To correlate connective tissue alterations with Warner-Bratzler shear force (WBSF) values.

Main Methods:

  • Scanning electron microscopy (SEM) for microstructural analysis.
  • Warner-Bratzler shear force (WBSF) to measure meat tenderness.
  • Hydrodynamic pressure processing (HDP) applied to beef semimembranosus muscle samples.
  • Comparison of samples immediately post-treatment and after 14 days of aging.

Main Results:

  • HDP treatment significantly reduced WBSF compared to controls, indicating increased tenderness.
  • SEM revealed disruption of the endomysial collagen fibril network by HDP, especially in plastic container treated samples (HDP-PC).
  • HDP-PC treatment showed greater connective tissue changes and WBSF reduction than the HDP commercial unit (HDP-CU).

Conclusions:

  • Shockwave-induced alterations in connective tissue are a primary mechanism for HDP-mediated meat tenderization.
  • The processing container significantly influences the efficacy of HDP in tenderizing beef.
  • HDP shows potential for enhancing beef tenderness through targeted microstructural modifications.