Kit for the determination of gluten contamination in a compound to be analysed

Kit (100) comprising a preparation solution (17) configured to prepare a compound to be analysed, a sensor (1) for the determination of gluten contamination in the compound, and a processing unit connected thereto. The sensor comprises a base layer 5 (2) with a pair of electrodes (2a); an upper layer (4) with a membrane (4a) permeable to at least one gas releasable by the compound as a function of the concentration of at least one prolamin present in the compound; and a resistive layer (3), interposed between the base layer (2) and the upper layer (4) and configured to detect the gas released by the compound and permeated through the membrane (4a) and to change the 10 resistivity thereof as a function of the gas detected. The pair of electrodes (2a) is configured to detect a resistivity change in the resistive layer (3) and to generate a signal as a function of the detected resistivity change.