کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1185746 | 963413 | 2012 | 5 صفحه PDF | دانلود رایگان |

In this paper, a molecularly imprinted polymer (MIP) for cephalosporin molecules (cephalexin (CFL) and cephapirin (CFP)), was prepared by non covalent molecular imprinting approach and applied to solid phase extraction (SPE). For MIP synthesis, a tributylammonium cefadroxil salt (TBA–CFD) was used as template with methacrylic acid and ethylene glycol dimethacrylate as monomer and cross-linker, respectively, in acetone–methanol 92/8 (v/v) mixture. The selectivity of MIP versus non imprinted polymer (NIP) was confirmed for CFL, CFD and CFP in standard solutions as well as in milk samples. The efficiency of the synthesized MIP was evaluated by means of the application of the proposed MIP–SPE procedure to spiked milk samples previous to the HPLC method for the detection of cephalosporins. The MIP–SPE recoveries were higher than 60% for the three target analytes in spiked milk.
► MIP of cefadroxil synthesized in order to specifically extract cephalosporin antibiotics from milk before HPLC–UV analysis.
► Satisfactory MIP/NIP selectivity obtained for cefadroxil, cephalexin and cephapirin.
► Quantitative and specific extraction of antibiotics from spiked milk.
Journal: Food Chemistry - Volume 135, Issue 2, 15 November 2012, Pages 775–779