Multivariate optimization for extraction of 2-methylimidazole and 4-methylimidazole from açaí-based food products using polymeric ionic liquid-based sorbent coatings in solid-phase microextraction coupled to gas chromatography-mass spectrometry. - Nascimento LES; Thapa B; Oliveira WDS; Rodrigues PR; Godoy HT; Anderson JL (Food chemistry, 2024)