Spatiotemporal distribution characteristics of yessotoxins and pectenotoxins in phytoplankton and shellfish collected from the southern coast of South Korea
2022
Kim, Mungi | Hong, Seongjin | Lim, Young Kyun | Cha, Jihyun | Gwak, Jiyun | Kim, Youngnam | An, Seong-Ah | Lee, Hee-Seok | Baek, Seung Ho
The distribution characteristics of lipophilic marine biotoxins (LMTs), such as yessotoxins (YTXs) and pectenotoxins (PTXs) in phytoplankton, mussels, and commercial seafood were determined for the southern coast of South Korea. Gonyaulax spinifera and Dinophysis acuminata, which are the causative microalgae of YTXs and PTXs, were recorded during summer. Homo-YTX and PTX-2 were predominantly detected in phytoplankton (max: 5.7 μg g⁻¹ ww), whereas only YTXs were detected in mussels (max: 1.1 μg g⁻¹ ww). LMT concentrations in mussels were positively correlated with those in phytoplankton. However, there was a 1-month time gap in maximum LMT concentrations between mussels and phytoplankton. Homo-YTX was detected in commercial seafood, including red scallop and comb pen shell. However, homo-YTX concentrations in shellfish were below the recommended value of the European Food Safety Authority (3.75 mg YTX equivalents kg⁻¹); thus, the consumption of this seafood was not considered to be a significant risk for human health.
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