Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Variation and Profile of Paralytic Shellfish Poisoning Toxins in Jinhae Bay, Korea

  • Mok, Jong-Soo (Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Song, Ki-Cheol (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Lee, Ka-Jeong (Food and Safety Research Division, National Fisheries Research and Development Institute) ;
  • Kim, Ji-Hoe (Food and Safety Research Division, National Fisheries Research and Development Institute)
  • Received : 2013.05.22
  • Accepted : 2013.07.16
  • Published : 2013.09.30
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Abstract

To understand critical aspects of paralytic shellfish poisoning (PSP) in a chief area of bivalve production in Korea, seasonal variation in PSP toxins in bivalves collected from Jinhae Bay, Korea in 2009 was surveyed by the pre-column high-performance liquid chromatography oxidation method. We also confirmed the profiles of major bivalves such as oysters Crassostrea gigas and mussels Mytilus galloprovincialis in Jinhae Bay. PSP toxins in the bivalves showed remarkable seasonal variation. PSP toxin levels were detected from April to May in 2009, and the highest total toxin levels at all stations were recorded in May. The major toxins in bivalves were gonyautoxin [GTX] 1&4 and C 1&2; in oysters GTX 2&3 were also detected as major components. GTX 1&4, which showed the highest PSP toxin levels at each station, accounted for the highest proportions of toxin components in mussels and oysters (64.5-71.3% and 41.4-42.4%, respectively). It was also confirmed that the highest toxicity (in ${\mu}g$ saxitoxin [STX] eq/g) was derived from GTX 1&4. The highest total toxicity (in ${\mu}g$ STX eq/g) was approximately 2-8-fold higher in mussels than in oysters collected from the same station. PSP toxin levels in bivalves differed significantly according to the sample collection station. However, the profiles of toxins in the bivalves did not show significant differences during the survey period according to sample collection station. This study shows that PSP toxin levels in some samples from Jinhae Bay were above the regulatory limit in Korea during a specific period in spring.

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References

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