Evaluation of a probe for predicting beef tenderness

Area of Science:

• Meat science
• Food texture analysis
• Instrumental methods for meat quality assessment

Background:

• Objective measurement of meat tenderness is crucial for consumer satisfaction and industry standards.
• Traditional methods like the Warner-Bratzler shear force test are widely used but can be time-consuming.
• Developing faster, reliable methods for assessing meat tenderness is an ongoing research area.

Purpose of the Study:

• To evaluate the performance of the MIRINZ tenderness probe in assessing meat tenderness.
• To compare the predictive value of the MIRINZ probe with sensory and consumer evaluations.
• To determine the optimal probe configuration and sample state (raw vs. cooked) for tenderness assessment.

Main Methods:

• Three experiments were conducted using the MIRINZ probe with tension and shear heads on raw and cooked beef muscles (longissimus lumborum and semimembranosus).
• Probe data (D50, area 2, area 3 values) were correlated with sensory panel data and untrained consumer hedonic ratings.
• Comparisons were made with Warner-Bratzler shear force values.

Main Results:

• For raw samples, D50 and area 2 values showed some correlation with sensory and consumer properties, but lacked predictive power.
• For cooked samples, shear head area 3 values demonstrated the highest correlation and predictive value for tenderness.
• The MIRINZ probe's cooked sample measurements outperformed Warner-Bratzler shear force values in predicting sensory and consumer traits.

Conclusions:

• The MIRINZ probe, particularly using the shear head on cooked samples, is a promising objective tool for meat tenderness assessment.
• It offers a quicker and potentially more predictive alternative to the Warner-Bratzler shear method for cooked meat.
• Further research may be needed to fully elucidate the specific textural properties assessed by the probe on raw samples.