PMID- 28274462 OWN - NLM STAT- MEDLINE DCOM- 20170424 LR - 20191210 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 227 DP - 2017 Jul 15 TI - Extraction of melamine from milk using a magnetic molecularly imprinted polymer. PG - 85-92 LID - S0308-8146(16)32111-2 [pii] LID - 10.1016/j.foodchem.2016.12.090 [doi] AB - A novel magnetic molecularly imprinted polymer (MMIP) for the preconcentration of melamine, a non-protein nitrogen food additive from complex matrices was synthesized and characterized using FT-IR, XRD, SEM and VSM techniques. Surface imprinting was done on vinyltrimethoxysilane coated Fe(3)O(4) (Fe(3)O(4)-VTMS) using 2-acrylamido-2-methylpropane sulfonic acid (AMPS), N,N'-methylenebisacrylamide (MBA) and potassium persulfate (KPS) as functional monomer, crosslinker and initiator respectively. Saturation magnetization value obtained for MMIP was 1.72emug(-1). Binding studies showed that MMIP exhibits good recognition to melamine compared to magnetic non imprinted polymer (MNIP). The optimum pH for the binding of melamine was found to be 4.5. Binding process was very fast and pseudo-second-order model fitted well with the kinetic data. Binding isotherm followed Langmuir isotherm model of monolayer adsorption with a maximum melamine binding efficiency of 62.25mgg(-1). The HPLC-UV analysis results revealed the applicability of MMIP in solid phase extraction and determination of melamine from milk samples. CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Anirudhan, T S AU - Anirudhan TS AD - Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom, Trivandrum 695 581, India. Electronic address: tsani@rediffmail.com. FAU - Christa, J AU - Christa J AD - Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom, Trivandrum 695 581, India. FAU - Deepa, J R AU - Deepa JR AD - Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom, Trivandrum 695 581, India. LA - eng PT - Evaluation Study PT - Journal Article DEP - 20161228 PL - England TA - Food Chem JT - Food chemistry JID - 7702639 RN - 0 (Acrylamides) RN - 0 (Polymers) RN - 0 (Triazines) RN - EDK4RIE19C (N,N'-methylenebisacrylamide) RN - N3GP2YSD88 (melamine) SB - IM MH - Acrylamides/chemistry MH - Adsorption MH - Animals MH - Cattle MH - Food Contamination/*analysis MH - Magnetics/instrumentation/*methods MH - Milk/*chemistry MH - Molecular Imprinting MH - Polymers/chemical synthesis/*chemistry MH - Solid Phase Extraction/instrumentation/*methods MH - Spectroscopy, Fourier Transform Infrared MH - Triazines/analysis/*isolation & purification OTO - NOTNLM OT - 2-Acrylamido-2-methylpropane sulfonic acid OT - Adsorption OT - Free radical polymerization OT - Magnetic molecularly imprinted polymer OT - Melamine OT - Vinyltrimethoxysilane EDAT- 2017/03/10 06:00 MHDA- 2017/04/25 06:00 CRDT- 2017/03/10 06:00 PHST- 2016/01/16 00:00 [received] PHST- 2016/12/12 00:00 [revised] PHST- 2016/12/27 00:00 [accepted] PHST- 2017/03/10 06:00 [entrez] PHST- 2017/03/10 06:00 [pubmed] PHST- 2017/04/25 06:00 [medline] AID - S0308-8146(16)32111-2 [pii] AID - 10.1016/j.foodchem.2016.12.090 [doi] PST - ppublish SO - Food Chem. 2017 Jul 15;227:85-92. doi: 10.1016/j.foodchem.2016.12.090. Epub 2016 Dec 28.