Microscopy and Image Analysis-Based Identification of High- and Low-Pressure Mechanically Separated Pork Meat

Area of Science:

• Food Science
• Histology
• Analytical Chemistry

Background:

• Mechanically separated meat (MSM) production involves mechanical force, altering muscle fiber structure.
• Accurate identification of MSM is crucial for regulatory compliance, product standards, and consumer transparency in the EU.
• Existing methods may not sufficiently differentiate MSM from non-MSM, necessitating improved analytical tools.

Purpose of the Study:

• To evaluate a standardized histological protocol for differentiating high-pressure MSM, low-pressure MSM, and non-MSM pork.
• To assess the efficacy of light microscopy combined with image analysis for MSM identification.
• To provide a reliable and cost-effective tool for routine food inspection.

Main Methods:

• Analysis of 40 MSM samples (20 high-pressure, 20 low-pressure) and 20 non-MSM pork samples.
• Application of a standardized histological protocol using light microscopy.
• Image analysis and statistical evaluation of histological features, including calcium aggregate parameters.

Main Results:

• The histological protocol demonstrated 100% sensitivity and specificity in distinguishing MSM from non-MSM pork.
• Significant differences were observed between high- and low-pressure MSM regarding calcium aggregate parameters via image analysis.
• The method proved effective for differentiating various types of MSM and non-MSM pork.

Conclusions:

• The developed histological protocol is a reliable, cost-effective method for identifying MSM in pork.
• The findings support the method's utility in routine food inspection and regulatory enforcement.
• Further validation across different species and production systems is recommended to broaden the method's applicability.