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Abstract: A molecular imprinting technique was applied in this work to detect N-acetylneuraminic acid (Neu5Ac) and its analogue structure. Two molecularly imprinted polymers (MIP) were prepared using Neu5Ac as the template molecule, as well as methacrylic acid (MAA) or 4-vinylpyridine (4-Vpy) and ethyleneglycol dimethacrylate (EGDMA) as the functional monomer and cross-linker, respectively. Free radical polymerization was carried out at 4 °C under UV radiation or thermal (60 °C) polymerization. MIP thus obtained were ground into 11-25 μm and 25-44 μm. The binding results from Neu5Ac solution, mannose (Man) solution and N-acetyl-D-mannosamine (ManNAc) solution performed by Neu5Ac-MIP showed specific binding toward Neu5Ac rather than other analogue compounds on the host-guest system. The values of capacity for Neu5Ac-MIP were measured and experimental results were further used for simulation to obtain the binding isotherms. The principal advantage of this method is that Neu5Ac- MIP can recognize Neu5Ac and its analogue compounds
Template and target information: N-acetylneuraminic acid, Neu5Ac
Author keywords: Free radical polymerization, Host-guest system, molecularly imprinted polymer, N-acetylneuraminic acid, Specific binding