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KMID : 0881720190340050502
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Journal of Food Hygiene and Safety
2019 Volume.34 No. 5 p.502 ~ p.507
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Monitoring of Commercial Cephalopod Products Sold on the South Korea Market using DNA Barcode Information
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Yu Yeon-Cheol
Hong Ye-Won
Kim Jung-Ju
Kim Hyung-Soo
Kang Tae-Sun
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Abstract
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Cephalopods are one of the most important fishery resources in the world because of their desirable taste and nutritional value. In south Korea, one of the countries in which a large amount of seafood is consumed, cephalopods (e.g., octopus, squid, and cuttlefish) have an annual consumption rate of over 400,000 metric tons. In this study, octopus and squid products (n=28) sold on the market were monitored by analyzing sequences of DNA barcode markers (cytochrome c oxidase subunit I and 16S ribosomal RNA genes). For species identification, the NCBI BLAST database was screened with the sequences and analyzed as a query. In this BLAST search, twelve squid products showed 99-100% sequence identity to Dosidicus gigas (n=3) and Todarodes pacificus (n=9). In the case of the other 16 products that were declared using octopus as raw materials on the labels, six products were identified as Cistopus taiwanicus (n=1), Amphioctopus marginatus (n=1), Scaeurgus unicirrhus (n=1), and Dosidicus gigas (n=3). Monitoring results indicated that a significant percentage (37.5%) of mislabeling was present in octopus products sold on the South Korean market.
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KEYWORD
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Cephalopod, DNA barcode, Food fruad, Species identification
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