Effective extraction and detection of aflatoxins in cereals using nitrogen-rich benzodiimidazole linkage magnetic covalent organic framework based solid phase extraction and HPLC-MS/MS analysis.

ABSTRACT: Cereals are frequently contaminated by aflatoxins (AFs). The objective of this study was to develop an efficient extraction materials for rapidly extracting and detecting AFs. A novel amino-functionalized benzodiimidazole linkage magnetic covalent organic framework (Fe₃O₄@BB-COF) was simply fabricated by one-step cyclization and aromatization. The Fe₃O₄@BB-COF, having multiple N-containing active sites, exhibited excellent extraction capability towards AFs due to synergistic interactions, including the π-π interactions, hydrogen bonding interactions, polar interactions, electrostatic interactions and Lewis acid-base interactions. The Fe₃O₄@BB-COF based MSPE method for detecting aflatoxins has advantages of simple operation,

SUBMITTER: Wei D 

PROVIDER: S-EPMC11406339 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature