In-situ production of Histamine-imprinted polymeric materials for electrochemical monitoring of fish

•Electrochemical histamine sensing with molecularly-imprinted polymers.•Sensing layer assembled in-situ using electropolymerization.•Aniline used as monomer to assemble the molecularly-imprinted polymers.•Selecting conditions to reduce the electroactivity features of histamine when compared to aniline.•Optimum biosensor applied to the analysis of fish samples.