Species determination - Can we detect and quantify meat adulteration?

Area of Science:

• Food Science
• Analytical Chemistry
• Regulatory Compliance

Background:

• Meat product mislabeling, particularly species identification, occurs in over 20% of cases.
• Accurate labeling ensures fair trade and enables informed consumer choices.
• Enforcement of labeling regulations necessitates reliable and precise analytical methods.

Purpose of the Study:

• To review various analytical methods for meat product authentication.
• To assess the quantitative capabilities and limits of detection (LOD) of these methods.
• To address challenges in correlating DNA-based results to meat content (weight/weight) and propose alternatives.

Main Methods:

• Review of protein and DNA-based analytical techniques.
• Evaluation of quantification abilities and LOD for different methods.
• Discussion on the conversion of DNA results to meat content (weight/weight).

Main Results:

• Protein and DNA measurements are not directly comparable to labeled meat content (weight/weight).
• Significant challenges exist in accurately converting quantitative DNA results to meat content (weight/weight).
• Current methods may not reliably enforce labeling regulations due to quantification issues.

Conclusions:

• Existing analytical methods, especially DNA-based ones, face difficulties in accurately quantifying meat content (weight/weight).
• Researchers should be cautious when expressing DNA results as meat content (weight/weight).
• Expressing DNA results as genome/genome equivalents offers a more reliable alternative for accurate meat content determination.