Norakmar I., Aziah A.A., Roosnoor F.H., Mohamad Azlan, J., Suhaimi D. & Faridah I.
Adulteration of food is fast becoming one of the most important global issues with increased wareness and emphasised made on authenticity and traceability of food. In the meat industry, adulteration of eat posed not just economic problems but could also relate to religion and cultural issues. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) of mitochondrial 12S rRNA ene is a technique developed to identify animal species based on DNA using a universal primer, followed by digestion with restriction enzymes. The PCR amplification of DNA using the universal primer will yield a 456-bp fragments for all species tested, namely pig, cattle, buffalo, sheep and goat. Digestion of the amplicons with restriction enzymes of AluI, HhaI, ApoI and BspTI resulted in species-specific band patterns that could confirm, identify and differentiate the animal species. The PCR-RFLP technique was suitable and successfully used to identify single animal species in raw and processed food of animal origins as well as animal feed.