Heliyon (Apr 2024)

Magnetic molecularly imprinted polymers using ternary deep eutectic solvent as novel functional monomer for hydroxytyrosol separation

  • Xiaojing Wang,
  • Mengru Wang,
  • Bailin Wu,
  • Shengyuan Yu,
  • Zaizhi Liu,
  • Xuyang Qin,
  • Huijuan Xu,
  • Wei Li,
  • Sha Luo,
  • Lijuan Wang,
  • Chunhui Ma,
  • Shouxin Liu

Journal volume & issue
Vol. 10, no. 8
p. e28257

Abstract

Read online

In this work, magnetic molecularly imprinted polymers (MIPs) for specific recognition of Hydroxytyrosol (HT) were designed by vinyl-modified magnetic particles (Fe3O4@SiO2@VTEOs) as carrier, ternary deep eutectic solvent (DES) as functional monomer, while ethylene glycol dimethacrylate (EGDMA) as crosslinker. The optimum amount of DES was obtained by adsorption experiments (molar ratio, caffeic acid: choline chloride: formic acid = 1:6:3) which were 140 μL in total. Under the optimized amount of DES, the maximum adsorption capacity of the MIPs particles was 42.43 mg g−1, which was superior to non-imprinted polymer (4.64 mg g−1) and the imprinting factor (IF) is 9.10. Syringin and Oleuropicrin were used as two reference molecules to test the selectivity of the DES-MIPs particles. The adsorption capacity of HT was 40.11 mg g−1. Three repeated experiments show that the polymer has high stability and repeatability (RSD = 5.50).

Keywords