Bioconjugates and antibodies for immunodetection assisted by derivatization of the mycotoxin patulin

The present invention relates to bioconjugates and labeled derivatives of the adducts formed by the reaction of patulin with benzene-1,2-dithiols or their salts. Said conjugates are suitable for the production of antibodies capable of recognizing the aforementioned patulin-(benzene-1,2-dithiols) adducts with high affinity and specificity. Likewise, the present invention also relates to the use of bioconjugates of patulin-(benzene-1,2-dithiols) adducts and of labeled derivatives thereof as assay antigens. Furthermore, the present invention also relates to immunochemical methods for the analysis of patulin, using the bioconjugates and labeled derivatives and antibodies of the invention, which include a previous step to quantitatively convert patulin into these adducts. This invention also provides a kit for analyzing patulin comprising a benzene-1,2-dithiol or its salts, antibodies against patulin-(benzene-1,2-dithiols) adducts, and assay antigens.