Sample treatment based on molecularly imprinted polymers for the analysis of veterinary drugs in food samples: a review
The use of veterinary drugs in medical treatments and in the livestock industry is a recurrent practice. In subtherapeutic doses during prolonged times act to growth promoters. Residues of these substances in foods present a risk to human health. Their analyses guarantee consumer safety. The critical point in each analytical technique is the sample treatment and the analytical matrix complexity. The present manuscript summarizes the development, type of synthesis, characterization and application of Molecular imprinted polymers in separation, identification, and quantification techniques in the determination of veterinary drug residues in food samples in extraction, clean-up, isolation, and pre-concentration systems. The synthesized sorbents with specific recognition properties improve the interactions between the analytes, and the polymeric sorbents providing better analysis conditions and advantages in comparison with the commercial sorbents in terms of high selectivity, analytical sensitivity, easy performance, and low cost analysis.