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Extraction of melamine from milk using a magnetic molecularly imprinted polymer.
Food Chem. 2017 Jul 15; 227:85-92.FC

Abstract

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 Fe3O4 (Fe3O4-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.

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Authors+Show Affiliations

Anirudhan TS
Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom, Trivandrum 695 581, India. Electronic address: tsani@rediffmail.com.
Christa J
Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom, Trivandrum 695 581, India.
Deepa JR
Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom, Trivandrum 695 581, India.

MeSH

AcrylamidesAdsorptionAnimalsCattleFood ContaminationMagneticsMilkMolecular ImprintingPolymersSolid Phase ExtractionSpectroscopy, Fourier Transform InfraredTriazines

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

28274462

Citation

Anirudhan, T S., et al. "Extraction of Melamine From Milk Using a Magnetic Molecularly Imprinted Polymer." Food Chemistry, vol. 227, 2017, pp. 85-92.
Anirudhan TS, Christa J, Deepa JR. Extraction of melamine from milk using a magnetic molecularly imprinted polymer. Food Chem. 2017;227:85-92.
Anirudhan, T. S., Christa, J., & Deepa, J. R. (2017). Extraction of melamine from milk using a magnetic molecularly imprinted polymer. Food Chemistry, 227, 85-92. https://doi.org/10.1016/j.foodchem.2016.12.090
Anirudhan TS, Christa J, Deepa JR. Extraction of Melamine From Milk Using a Magnetic Molecularly Imprinted Polymer. Food Chem. 2017 Jul 15;227:85-92. PubMed PMID: 28274462.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Extraction of melamine from milk using a magnetic molecularly imprinted polymer. AU - Anirudhan,T S, AU - Christa,J, AU - Deepa,J R, Y1 - 2016/12/28/ PY - 2016/01/16/received PY - 2016/12/12/revised PY - 2016/12/27/accepted PY - 2017/3/10/entrez PY - 2017/3/10/pubmed PY - 2017/4/25/medline KW - 2-Acrylamido-2-methylpropane sulfonic acid KW - Adsorption KW - Free radical polymerization KW - Magnetic molecularly imprinted polymer KW - Melamine KW - Vinyltrimethoxysilane SP - 85 EP - 92 JF - Food chemistry JO - Food Chem VL - 227 N2 - 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 Fe3O4 (Fe3O4-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. SN - 1873-7072 UR - https://www.unboundmedicine.com/medline/citation/28274462/Extraction_of_melamine_from_milk_using_a_magnetic_molecularly_imprinted_polymer_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0308-8146(16)32111-2 DB - PRIME DP - Unbound Medicine ER -