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  • Title: Indirect enzyme-linked immunosorbent assay for the mycotoxin zearalenone.
    Author: Liu MT, Ram BP, Hart LP, Pestka JJ.
    Journal: Appl Environ Microbiol; 1985 Aug; 50(2):332-6. PubMed ID: 2932054.
    Abstract:
    A competitive indirect enzyme-linked immunosorbent assay (ELISA) was developed for the detection of zearalenone, an estrogenic mycotoxin. Zearalenone was converted to zearalenone-6'-carboxymethyloxime and conjugated to bovine serum albumin and poly-L-lysine for use as immunogen and solid-phase marker, respectively. Immunization of rabbits with the bovine serum albumin conjugate resulted in zearalenone antibody titers of 20,480 in 11 weeks. A competitive indirect ELISA was conducted by simultaneously incubating zearalenone with zearalenone antiserum over zearalenone-6'-carboxymethyloxime poly-L-lysine solid phase and then determining the bound rabbit immunoglobulin with goat anti-rabbit peroxidase conjugate. Response range for zearalenone in the resulting competition curve was between 1 and 50 ng/ml. Reactivities of this antiserum for alpha-zearalenol, beta-zearalenol, alpha-zearalanol, and beta-zearalanol were, respectively, 50, 12, 6, and 3% of that found for zearalenone. By using the competitive indirect ELISA, zearalenone was detectable in methanol-water extracts of corn, wheat, and pig feed samples.
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