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- W2079080087 abstract "Verrucosidin, which is a tremorgenic mycotoxin responsible for neurological diseases, has been detected in different dry-ripened foods as consequence of the growth of toxigenic molds. To improve food safety, the presence of verrucosidin producing molds in these kind foods should be quantified. The aim of this study was to design a duplex real-time PCR (qPCR) protocol based on TaqMan methodology with an internal amplification control (IAC). Eleven verrucosidin producing and 11 non producing strains belonging to different species often reported in food products were used. Verrucosidin production was tested by micellar electrokinetic capillary electrophoresis (MECE) and high-pressure liquid chromatography-mass spectrometry (HPLC-MS). A primer pair (VerF1/VerR1) and a TaqMan probe (Verprobe) were designed from the SVr1 probe sequence of a verrucosidin producing Penicillium polonicum. The conserved regions of the β-tubulin gene were used to design primers (TubF1/TubR1) and probe (Tubprobe) of the non-competitive IAC. The functionality of the developed method was demonstrated by the high linear relationship of the standard curves which relating Ct values and DNA template of the tested verrucosidin producers using the verrucosidin and IAC primers. The ability to quantify verrucosidin producers of the developed TaqMan assay in all artificially inoculated food samples was successful, with a minimum detection limit of 1 log cfu per gram of food. This qPCR protocol including an IAC could be very useful to quantify verrucosidin producing molds in dry-ripened foods avoiding false negative results. This method should be proposed to monitor the target molds in HACCP programs to prevent the risk of verrucosidin formation and consequently avoid its presence in the food chain." @default.
- W2079080087 created "2016-06-24" @default.
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- W2079080087 date "2012-02-01" @default.
- W2079080087 modified "2023-09-23" @default.
- W2079080087 title "Duplex real-time PCR method with internal amplification control for quantification of verrucosidin producing molds in dry-ripened foods" @default.
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- W2079080087 doi "https://doi.org/10.1016/j.ijfoodmicro.2011.10.020" @default.
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