A Novel Synthesis of a Magnetic Porous Imprinted Polymer by Polyol Method Coupled with Electrochemical Biomimetic Sensor for the Detection of Folate in Food Samples

The present study reports the development and application of a novel, sensitive, selective voltammetric sensor for quantitation folate or vitamin B9 in foodstuffs. was made from magnetic molecularly imprinted polymers (MMIPs), which were synthesized by core–shell method using magnetite nanoparticles obtained polyol method. MMIP-based used specific detection different food samples. MMIP material constructed water-dispersible nanomaterial, prepared immersing iron (III) acetylacetonate tri-ethylene-glycol (TEG) solvent. nanomaterial then subjected to polymerization allyl alcohol as functional monomer, ethylene-glycol-dimethacrylate (EGDMA) cross-linking agent, 2,2-Azobisisobutyronitrile (AIBN) radical initiator. proposed materials characterized Brunauer–Emmett–Teller (BET), field emission gun scanning electron microscopy (FEG-SEM), thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM) analysis. quantification performed square wave voltammetry under optimized conditions 15 mg MMIPs 85 carbon paste. modified electrode presented linear dynamic range (LDR) 2.0–12 µmol L−1 limit (LOD) 1.0 × 10−7 mol 0.1 acetate buffer solution (pH 4.0). successfully applied samples, where recovery percentages ranging 93 103% obtained. Finally, results selectivity showed that biomimetic is highly efficient determination real Adsorption tests evaluate compare efficiency non-molecularly polymer (MNIPs)—used control material, through HPLC standard