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Validation d’un procédé automatisé d’extraction sur phase solide de glandes digestives de moules pour l’identification et la quantification des dinophysistoxines en LC/ESI/SM2 par piégeage d’ions quadripolaire ArchiMer
Mondeguer, Florence; Mestres, Gilberte; Rouland, Caroline; Montagu, Monique; Maillols, Hélène.
This report presents a new extraction method of the dinophysistoxins (DTXs), confirmed by quantification using high-performance liquid chromatography coupled to mass spectrometry with an ion trap and electro spray interface (HPLC/ESI/MS2). The method originality consists on the adaptation of DTXs basic extraction procedure (liquid/ liquid) to a solid phase extraction (SPE) via a robotic station: ASPEC XLi The parameters of the automatization procedure were optimized to obtain the best DTXs recovery rate. These improvements were loaded with digestive gland mussel homogenat realized on a silica cartridge SPE, activated in hexane/chloroform (50:50), washed with hexane/chloroform (50:50) and extracted by an elution gradient (chloroform methanol (65:35) and...
Tipo: Text Palavras-chave: Toxines; Intoxication des coquillages; Dinophysistoxines; Acide okadaïque; Dinophysistoxine-1; Méthode alternative; Extraction sur phase solide; Automatisation; Couplage CLHP/ESI/SM2 par piège d’ions.; Toxins; Shellfish poisoning; Dinophysistoxins; Okadaic acid; Dinophysistoxin-1; Alternative method; Solid phase extraction; Automation; Liquid chromatography coupled ion trap..
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00342/45270/44724.pdf
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Simultaneous presence of Paralytic and Diarrheic Shellfish Poisoning toxins in Mytilus chilensis samples collected in the Chiloe Island, Austral Chilean Fjords Biol. Res.
GARCÍA,CARLOS; MARDONES,PAMELA; SFEIR,ANDREA; LAGOS,NÉSTOR.
The study shown here provides the first indisputable evidence that shellfish can be contaminated with Paralytic Shellfish Poisoning (PSP) and Diarrheic Shellfish Poisoning (DSP) toxins during the summer season in the Southern Chilean fjords. Quantitative analysis of the simultaneous presence of PSP and DSP toxins in Mytilus chilensis samples collected in the Chiloe Island are shown. The High Performance Liquid Chromatography (HPLC) analysis with pre-column derivatization method for DSP toxins and the post-column derivatization methods for PSP toxins, both with fluorescent on-line detections, showed that both type of toxins were concentrated by the filter bivalve Mytilus chilensis in amounts above the international safe limits. The phytoplankton analysis...
Tipo: Journal article Palavras-chave: DSP toxins; PSP toxins; Dinophysistoxin-1; Patagonia fjords; Chile.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000500002
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First report of diarrheic shellfish toxins in mollusks from Buenos Aires province (Argentina) associated with dinophysis spp.: evidence of okadaic acid, dinophysistoxin-1 and their acylderivatives Boletín de la Sociedad
Sar,Eugenia A; Sunesen,Inés; Goya,Alejandra B; Lavigne,Andrea S; Tapia,Eric; García,Carlos; Lagos,Néstor.
In January 2010, the toxin-producing dinoflagellates Dinophysis acuminata and D. caudata (10³ cells·l-1) were detected in Mar Azul during routine plankton monitoring in Buenos Aires Province coastal waters, Argentina. Wild clams Mesodesma mactroides and Donax hanleyanus from Mar Azul intertidal beach, which are part of the diet for local inhabitants and tourists, tested positive with the offcial lipophilic mouse bioassay. This paper focuses on the detection of Diarrhetic Shellfsh Poison (DSP) toxins in these samples using a HPLC-FLD pre column derivatization procedure. The data showed that shellfish were contaminated with complex DSP toxin profiles composed of Okadaic Acid (OA), Dinophysistoxin-1 (DTX-1), Acyl-Dinophysistoxin-1 (Acyl-DTX-1) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: DSP; Okadaic Acid; Dinophysistoxin-1; Acyl-derivatives; Dinophysis spp.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722012000100001
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