Establishment of a multiplex-PCR detection method and development of a detection kit for five animal-derived components in edible meat

Abstract

A multiplex polymerase chain reaction (PCR) detection method for the simultaneous detection of animal-derived components from deer, cow, sheep, pig and horse in edible meat was established, and a multiplex PCR detection kit for the rapid detection of animal-derived components was developed. According to the mitochondrial cytochrome b (Cyt b) gene of bovine species, sheep species, pig species and horse species and the mitochondrial cytochrome c oxidase subunit I (COX 1) gene of sika deer and red deer as the target gene sequences of primers, the specific primers of five different species were designed, the PCR system was optimized, and the multiplex PCR identification method of five animal-derived components was established. The minimum detection amount was determined by sensitivity test. The results showed that five meat specific amplification bands could be found at the same time in the same reaction system, including 173 bp fragment for venison, 148 bp for beef, 261 bp for pork, 100 bp for mutton and 424 bp for horse, indicating that the method is specific and stable. The minimum detection limit by this method was 1 ng/μL, showing a high sensitivity. According to the different sites in different areas of animal mitochondrial genes, a multiplex PCR detection method was established and a detection kit was developed, and the rapid, sensitive, stable and high-throughput detection of five animal-derived components and adulterated animal components in edible meat can be realized by using the kit.

Keywords

• Multiplex PCR
• Mitochondrial DNA
• Animal-derived components
• Detection kit