Evaluation of the Occurrence of Tetrodotoxin in Bivalve Mollusks from the Portuguese Coast

Occurrence of tetrodotoxin (TTX), a potent natural neurotoxin, in marine organisms and seafood from the European Union has been of increasing concern due to its relatively recent detection in bivalve mollusks and gastropods. Following a request of the European Food Safety Authority (EFSA) to EU Memb...

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Published in:Journal of marine science and engineering 2019-07, Vol.7 (7), p.232
Main Authors: Rodrigues, Susana Margarida, Pinto, Estefanía Pereira, Oliveira, Patrícia, Pedro, Sónia, Costa, Pedro Reis
Format: Article
Language:English
Subjects:
Bivalvia
Chromatography
Clams
Estuaries
Food safety
Gas flow
Laboratories
Liquid chromatography
marine biotoxins
Marine molluscs
Marine organisms
Mass spectrometry
Mass spectroscopy
Microbiological analysis
Mollusca
Mollusks
Mussels
Neurotoxins
Oysters
Seafood
seafood safety
Seafoods
Shellfish
Temperature
Tetrodotoxin
Toxins
Vibrio
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description Occurrence of tetrodotoxin (TTX), a potent natural neurotoxin, in marine organisms and seafood from the European Union has been of increasing concern due to its relatively recent detection in bivalve mollusks and gastropods. Following a request of the European Food Safety Authority (EFSA) to EU Member States to obtain more data on TTX occurrence, this study collected 117 samples of bivalve mollusks, including mussels (Mytilus galloprovincialis), oysters (Crassostrea gigas) and clams (Ruditapes philippinarum and Donax spp.), from the South and Southwest Portuguese coast between May and October 2018, for TTX determination and microbiological analysis. The analyses carried out by hydrophilic interaction liquid chromatography tandem mass spectrometry (HILIC-MS/MS) did not detect TTX in any sample, and microbiological analysis did not reveal high concentrations of Vibrio spp., which has been linked to the presence of TTX. Although preliminary, results from this study, the first investigating the presence of TTX in bivalve mollusks from the Portuguese coast, suggest that TTX may not represent a risk for human consumption of bivalve mollusks.
doi_str_mv 10.3390/jmse7070232
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subjects Bivalvia
Chromatography
Clams
Estuaries
Food safety
Gas flow
Laboratories
Liquid chromatography
marine biotoxins
Marine molluscs
Marine organisms
Mass spectrometry
Mass spectroscopy
Microbiological analysis
Mollusca
Mollusks
Mussels
Neurotoxins
Oysters
Seafood
seafood safety
Seafoods
Shellfish
Temperature
Tetrodotoxin
Toxins
Vibrio
title Evaluation of the Occurrence of Tetrodotoxin in Bivalve Mollusks from the Portuguese Coast
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