Fumonisin B1 analysis in maize by Molecularly Imprinted Polymer Paper Spray Ionization Mass Spectrometry (MIP-PSI-MS)

•A new method for detection of Fumonisin B1 mycotoxin in real maize samples.•The method consisted combine MIP membrane and PSI-MS for mycotoxin analysis.•The method exhibits a low detection limit (22.0 μg L-1) and good recoveries (98–105.5%).•A fast and straightforward way determined fumonisin B1 in maize-based products.