Development and validation of a PCR method to discriminate between Branchiostegus japonicus and Branchiostegus albus

옥돔과 옥두어 판별을 위한 PCR 검사법 개발과 검증

  • Kim, Na-Ye-Seul (Department of Food science and Technology, Suncheon National University) ;
  • Yang, Ji-Young (Department of Food Science and Technology, Pukyong National University) ;
  • Kim, Jung-Beom (Department of Food science and Technology, Suncheon National University)
  • Received : 2019.03.04
  • Accepted : 2019.04.12
  • Published : 2019.06.30


We developed and validated species-specific primers for Branchiostegus japonicus and Branchiostegus albus to prevent the sale of B. albus as B. japonicus. Primers for B. japonicus and B. albus were designed against the cytochrome b gene. Multiplex PCR showed a 288 bp amplicon for B. japonicus, a 159 bp amplicon for B. albus, and a 502 bp amplicon for the internal control. The PCR product bands for B. japonicus, B. albus, and the internal control were present at 1 ng each. The specificity and sensitivity of the primers developed in this study were validated by testing 38 B. japonicus strains and 13 B. albus strains. Using this monitoring method, fake fish did not appear due to the agreement between the experimental results and the species. Therefore, the developed multiplex PCR method was suitable for differentiating B. japonicus and B. albus.

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Fig. 1. Multiplex PCR specificity of B. japonicus and B. albus.

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Fig. 2. Multiplex PCR sensitivity of B. japonicus and B. albus.

Table 1. Primer sequence designed in this study

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Table 2. Monitoring results of B. japonicus and B. albus on the market

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Supported by : 식품의약품안전처


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