Fumonisin B1 analysis in maize by molecularly imprinted polymer paper spray ionization mass spectrometry (MIP-PSI-MS)
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2022
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Fumonisin B1 (FB1) is the most abundant and important mycotoxin for agriculture, food, and health among all fumonisins due to its widespread presence and toxicity. This compound is a concern for industries involving maize and maize-based products. This study proposes a new approach using molecularly imprinted polymer (MIP) combined with paper spray ionization mass spectrometry (PSI-MS) to enhance the sensitivity of analysis of FB1 in maize samples. MIP was synthesized directly on a cellulose membrane using 1,2,3-propanetricarboxylic acid as a template molecule. The analytical performance of MIP-PSI-MS provided a linear calibration curve with R2>0.99. Precision and accuracy were less than 5.5 % for all analyses. Finally, the MIP-PSI-MS method was applied to quantify the contents of FB1 in commercial maize samples, and 0.439 ± 0.060 and 0.486 ± 0.061 μg mL−¹ were found in two samples.
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RAMALHO, Ruver R. F. et al. Fumonisin B1 analysis in maize by molecularly imprinted polymer paper spray ionization mass spectrometry (MIP-PSI-MS). Journal of Food Composition and Analysis, Amsterdam, v. 107, e104362, 2022. DOI: 10.1016/j.jfca.2021.104362. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0889157521005627. Acesso em: 28 jun. 2023.