Multiplex dipstick immunoassay for semi-quantitative determination of Fusarium mycotoxins in cereals (Articolo in rivista)

Type
Label
  • Multiplex dipstick immunoassay for semi-quantitative determination of Fusarium mycotoxins in cereals (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.aca.2011.12.060 (literal)
Alternative label
  • Lattanzio V.M.T., Nivarlet N., Lippolis V., Della Gatta S., Huet A.C., Delahaut P., Granier B., Visconti A (2012)
    Multiplex dipstick immunoassay for semi-quantitative determination of Fusarium mycotoxins in cereals
    in Analytica chimica acta (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Lattanzio V.M.T., Nivarlet N., Lippolis V., Della Gatta S., Huet A.C., Delahaut P., Granier B., Visconti A (literal)
Pagina inizio
  • 99 (literal)
Pagina fine
  • 108 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 718 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Ispa-cnr (literal)
Titolo
  • Multiplex dipstick immunoassay for semi-quantitative determination of Fusarium mycotoxins in cereals (literal)
Abstract
  • A multiplex dipstick immunoassay based method for the simultaneous determination of major Fusarium toxins, namely zearalenone, T-2 and HT-2 toxins, deoxynivalenol and fumonisins in wheat, oats and maize has been developed. The dipstick format was based on an indirect competitive approach. Four test lines (mycotoxin-BSA conjugates) and one control line were located on the strip membrane. Labelled antibodies were freeze-dried within the microwell. Two matrix-related sample preparation protocols have been developed for wheat/oats (not containing fumonisins) and maize (containing fumonisins) respectively. The use of a methanol/water mixture for sample preparation allowed recoveries in the range 73-109% for all mycotoxins in all tested cereals, with relative standard deviation less than 10%. The optimized immunoassay was able to detect target mycotoxins at cut off levels equal to 80% of EU maximum permitted levels, i.e. 280, 400, 1400 and 3200 ?g kg-1, respectively, for zearalenone, T-2/HT-2 toxins, deoxynivalenol and fumonisins in maize, and 80, 400 and 1400 ?g kg-1, respectively, for zearalenone, T-2/HT-2 toxins and deoxynivalenol in wheat and oats. Analysis of naturally contaminated samples resulted in a good agreement between multiplex dipstick and validated confirmatory LC-MS/MS. The percentage of false positive results was less than or equal to 13%, whereas no false negative results were obtained. Data on the presence/absence of 6 mycotoxins at levels close to EU regulatory levels were obtained within 30 min. The proposed immunoassay protocol is rapid, inexpensive, easy-to-use and fit for purpose of rapid screening of mycotoxins in cereals. (literal)
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