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Development of ELISAs for detecting domoic acid, okadaic acid, and saxitoxin and their applicability for the detection of marine toxins in samples collected in Belgium Dubois, M.; Demoulin, L.; Charlier, C.; Singh, G.; Godefroy, S.; Campbell, K.; Elliott, C.; Delahaut, P. (2010). Development of ELISAs for detecting domoic acid, okadaic acid, and saxitoxin and their applicability for the detection of marine toxins in samples collected in Belgium. Food additives & contaminants. Part A. Chemistry, analysis, control, exposure & risk assessment (Print) 27(6): 859-868. dx.doi.org/10.1080/19440041003662881 In: Food additives & contaminants. Part A. Chemistry, analysis, control, exposure & risk assessment. TAYLOR & FRANCIS LTD. ISSN 1944-0049; e-ISSN 1944-0057

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Beschikbaar in	Auteurs
VLIZ: Non-open access 375908 [ aanvragen ]

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Trefwoord

Marien/Kust

Author keywords

immunoassays; in-house validation; screening - enzyme-linkedimmunoabsorbent assay (ELISA); phycotoxins; seafood

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Auteurs		Top
Dubois, M. Demoulin, L. Charlier, C. Singh, G.	Godefroy, S. Campbell, K. Elliott, C. Delahaut, P.

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Abstract

Okadaic acid, a diarrhetic shellfish poison, domoic acid, an amnesic shellfish poison, and saxitoxin, a paralytic shellfish poison, are three of the best-known marine biotoxins. The mouse bioassay is the method most widely used to detect many of these toxins in shellfish samples, but animal welfare concerns have prompted researchers to seek alternative methods of detection. In this study, three direct competitive enzyme-linked immunosorbent assays (ELISAs), each based on antibodies raised in rabbits against a conjugate of the analyte of interest, were developed for marine biotoxin detection in mussel, oyster, and scallop. One assay was for okadaic acid, one for saxitoxin, and one for domoic acid usually detected and quantified by high-performance liquid chromatography-ultraviolet light (HPLC-UV). All three compounds and a number of related toxins were extracted quickly and simply from the shellfish matrices with a 9 : 1 mixture of ethanol and water before analysis. The detection capabilities (CCß values) of the developed ELISAs were 150 µg kg-1 for okadaic acid, 50 µg kg-1 for domoic acid, and 5 µg kg-1 or less for saxitoxin. The assays proved satisfactory when used over a 4-month period for the analysis of 110 real samples collected in Belgium.

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