Self-assembled monolayer-based immunoassays for okadaic acid detection in seawater as monitoring tools
Autor/a
Leonardo, Sandra
Toldrà, Anna
Rambla-Alegre, Maria
Andree, Karl B.
Ferreres, Laura
Campbell, Katrina
Elliott, Christopher T.
O'Sullivan, Ciara K.
Pazos, Yolanda
Fecha de publicación
2017-11-14ISSN
0141-1136
Resumen
Rapid and cost-effective methods to monitor the presence of diarrhetic shellfish poisoning (DSP) toxins in seawater samples in an easy and reliable manner are required to protect human health and avoid economic losses to shellfish industry. Immunoassays for the detection of okadaic acid (OA) and dinophysistoxin-1 and dinophysistoxin-2 are developed by immobilising OA on self-assembled monothiols or dithiols in an ordered and oriented way, providing an effective limit of detection of ∼1 ng OA equiv./mL seawater. The immunoassays are applied to the analysis of the particulate fraction of seawater samples from two Catalan harbours (NW Mediterranean) and samples collected periodically from the Galician Rias (E Atlantic), as well as a reference mussel sample. Results are in agreement with LC-MS/MS and the certified values. OA concentration in seawater correlates with Dinophysis cell abundance, with a 1–2 weeks lag. The immunoassays provide powerful high-throughput analytical methods potentially applicable as alternative monitoring tools.
Tipo de documento
Artículo
Versión del documento
Versión aceptada
Lengua
English
Materias (CDU)
63 - Agricultura. Silvicultura. Zootecnia. Caza. Pesca
Páginas
31
Publicado por
Elsevier
Publicado en
Marine Environmental Research
Citación
Leonardo, Sandra, Anna Toldrà, Maria Rambla-Alegre, Margarita Fernández-Tejedor, Karl B. Andree, Laura Ferreres, and Katrina Campbell et al. 2018. "Self-Assembled Monolayer-Based Immunoassays For Okadaic Acid Detection In Seawater As Monitoring Tools". Marine Environmental Research 133: 6-14. Elsevier BV. doi:10.1016/j.marenvres.2017.11.004.
Número del acuerdo de la subvención
MINECO/Programa Estatal de I+D+I orientada a los retos de la sociedad/BIO2014-56024-C2-2-R/ES/MICROSISTEMAS PARA LA DETECCION RAPIDA, FIABLE Y RENTABLE DE MICROALGAS TOXICAS IN SITU Y A TIEMPO REAL/SEASENING
INIA/Programa Estatal de promoción del talento y su empleabilidad en I+D+I/RTA2013-00096-00-00/ES/Promoción de una Acuicultura de bivalvos y pesquerías sostenible y segura mediante modelización y caracterización del riesgo de toxinas emergentes/PROMAQUA
Program
Aigües Marines i Continentals
Aqüicultura
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