Abstract：
:The aim of this study was to prepare molecularly imprinted polymers (MIPs) with ampicillin (AMP) and to evaluate the feasibility of these materials for being used as solid phase extraction sorbent for the selective preconcentration and determination of AMP in cow milk samples. MIPs were synthesized by bulk polymerization using methacrylic acid or methyl methacrylate as monomer and ethylene glycol dimethacrylate as cross-linker at different ratios. Characterization of the MIPs were carried out by Fourier-transform infrared spectrometry. The variables affecting the molecularly imprinted solid-phase extraction (MISPE) procedure were optimized. AMP recoveries were higher than 98%, and RSD less than 7%. A preconcentration factor of 20 was reached, which was sufficient to determine AMP at levels allowed by the EU (4μgkg-1) in cow milk. The selectivity of the AMP-MIP was evaluated in presence of other structurally related β-lactam antibiotics (amoxicillin, oxacillin, penicillin G).
journal_name
Food Chemjournal_title
Food chemistryauthors
Soledad-Rodríguez B,Fernández-Hernando P,Garcinuño-Martínez RM,Durand-Alegría JSdoi
10.1016/j.foodchem.2016.11.097subject
Has Abstractpub_date
2017-06-01 00:00:00pages
432-438eissn
0308-8146issn
1873-7072pii
S0308-8146(16)31946-Xjournal_volume
224pub_type
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