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Species Determination and Quantitation in Mixtures Using MRM Mass Spectrometry of Peptides Applied to Meat Authentication
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Meat species identification and Halal authentication analysis using mitochondrial DNA.

Chandrika Murugaiah1, Zainon Mohd Noor, Maimunah Mastakim

  • 1School of Health Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan.

Meat Science
|April 27, 2010
PubMed
Summary

This study introduces a PCR-restriction fragment length polymorphism (RFLP) method for identifying meat species like beef, pork, and chicken. This technique also aids in Halal authentication by confirming genetic differences in mitochondrial DNA.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Food Science

Background:

  • Accurate species identification in meat products is crucial for regulatory compliance, consumer protection, and Halal certification.
  • Traditional methods for meat species identification can be time-consuming and may lack specificity.
  • Mitochondrial DNA (mtDNA) offers a robust target for species identification due to its high copy number and evolutionary conservation.

Purpose of the Study:

  • To develop and validate a Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) assay for the reliable identification of multiple meat species.
  • To assess the utility of the developed PCR-RFLP method for Halal authentication by distinguishing between permitted and non-permitted species.
  • To establish a genetic typing scheme for differentiating beef, pork, buffalo, quail, chicken, goat, and rabbit meat.

Main Methods:

  • DNA extraction from various meat samples including beef (Bos taurus), pork (Sus scrofa), buffalo (Bubalus bubali), quail (Coturnix coturnix), chicken (Gallus gallus), goat (Capra hircus), and rabbit (Oryctolagus cuniculus).
  • Amplification of a specific region within the cytochrome b (cyt b) mitochondrial gene using Polymerase Chain Reaction (PCR).
  • Digestion of PCR amplicons with selected restriction endonucleases (AluI, BsaJI, RsaI, MseI, BstUI) and analysis of fragment patterns via gel electrophoresis.

Main Results:

  • Successfully amplified a 359-bp fragment from the cyt b gene for all tested meat species.
  • Identified specific restriction enzyme digestion patterns that effectively differentiate between the six meat species.
  • Demonstrated the capability of the PCR-RFLP method to distinguish genetic variations crucial for species identification and Halal authentication.

Conclusions:

  • The developed PCR-RFLP method provides a reliable, cost-effective, and accurate tool for meat species identification.
  • This genetic approach is valuable for ensuring food authenticity and integrity, particularly in Halal certification processes.
  • The established typing scheme effectively reveals genetic differences among species, supporting robust meat product authentication.