The invention relates to a method for detecting allergens, pollutants or fraudulent target species in an agricultural food sample (ECH)A chemical etching step (E2) of mixing the agricultural food sample (ECH) with a corrosive solution (s cor R) to obtain a solution extract (Ex);A first analysis (A1), including the step of detecting the DNA of the target species present in the extract by sequencing or biomolecular analysis (E41), and / orThe second analysis (A2) includes the step of detecting (E51) the protein produced by the target species in the extract by immune or spectral analysis.chartPublish with summary: Figure 1
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