Detection of hazelnut (Corylus spp.) in processed foods using real-time PCR
2007
Abstract Hazelnut seeds ( Corylus spp.) are source of allergens and could cause severe adverse reactions in sensitized subjects, even if consumed in traces. This work presents two sensitive real-time PCR methods to quantify hazelnut in foods, one using the Sybr green dye and one based on hazelnut-specific Taqman probe designed on Cor a1.04 gene (specific amplicon: 82 bp). The sensibility and the robustness of the method were estimated analyzing spiked samples and some commercial hazelnut-containing creams. The lowest detection limit was 0.1 ng of genomic DNA. A qualitative specific PCR and a comparison of different DNA extraction protocols are also discussed.
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