Voltamperometric discrimination of urea and melamine adulterated skimmed milk powder

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Nitrogen compounds like urea and melamine are known to be commonly used for milk adulteration resulting in undesired intoxication; a well-known example is the Chinese episode occurred in 2008. The development of a rapid, reliable and economic test is of relevance in order to improve adulterated milk...

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Autores principales:	Hilding-Ohlsson, A., Fauerbach, J.A., Sacco, N.J., Bonetto, M.C., Cortón, E.
Formato:	Artículo publishedVersion
Publicado:	2012
Materias:	F-PCA KNN Milk adulteration Rapid screening methods Voltammetry Functional principal component analysis Milk adulterations Rapid screening Screening methods Significant differences Voltammetric data Cyclic voltammetry Metabolism Principal component analysis Urea melamine triazine derivative urea animal article chemistry dairy product f-PCA food contamination methodology milk milk adulteration potentiometry powder principal component analysis rapid screening methods voltammetry Animals Dairy Products Food Contamination Milk Powders Principal Component Analysis Triazines
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_14248220_v12_n9_p12220_HildingOhlsson http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_14248220_v12_n9_p12220_HildingOhlsson_oai
Aporte de:	Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires

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spelling	I28-R145-paper_14248220_v12_n9_p12220_HildingOhlsson_oai2020-10-19 Hilding-Ohlsson, A. Fauerbach, J.A. Sacco, N.J. Bonetto, M.C. Cortón, E. 2012 Nitrogen compounds like urea and melamine are known to be commonly used for milk adulteration resulting in undesired intoxication; a well-known example is the Chinese episode occurred in 2008. The development of a rapid, reliable and economic test is of relevance in order to improve adulterated milk identification. Cyclic voltammetry studies using an Au working electrode were performed on adulterated and non-adulterated milk samples from different independent manufacturers. Voltammetric data and their first derivative were subjected to functional principal component analysis (f-PCA) and correctly classified by the KNN classifier. The adulterated and non-adulterated milk samples showed significant differences. Best results of prediction were obtained with first derivative data. Detection limits in milk samples adulterated with 1% of its total nitrogen derived from melamine or urea were as low as 85.0 mg·L-1 and 121.4 mg·L-1, respectively. We present this method as a fast and robust screening method for milk adulteration analysis and prevention of food intoxication. © 2012 by the authors; licensee MDPI, Basel, Switzerland. Fil:Fauerbach, J.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sacco, N.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bonetto, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cortón, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_14248220_v12_n9_p12220_HildingOhlsson info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Sensors 2012;12(9):12220-12234 F-PCA KNN Milk adulteration Rapid screening methods Voltammetry F-PCA Functional principal component analysis KNN Milk adulterations Rapid screening Screening methods Significant differences Voltammetric data Cyclic voltammetry Metabolism Principal component analysis Voltammetry Urea melamine triazine derivative urea animal article chemistry dairy product f-PCA food contamination KNN methodology milk milk adulteration potentiometry powder principal component analysis rapid screening methods f-PCA KNN milk adulteration rapid screening methods voltammetry Animals Dairy Products Food Contamination Milk Powders Principal Component Analysis Triazines Urea Voltamperometric discrimination of urea and melamine adulterated skimmed milk powder info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_14248220_v12_n9_p12220_HildingOhlsson_oai
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-145
collection	Repositorio Digital de la Universidad de Buenos Aires (UBA)
topic	F-PCA KNN Milk adulteration Rapid screening methods Voltammetry F-PCA Functional principal component analysis KNN Milk adulterations Rapid screening Screening methods Significant differences Voltammetric data Cyclic voltammetry Metabolism Principal component analysis Voltammetry Urea melamine triazine derivative urea animal article chemistry dairy product f-PCA food contamination KNN methodology milk milk adulteration potentiometry powder principal component analysis rapid screening methods f-PCA KNN milk adulteration rapid screening methods voltammetry Animals Dairy Products Food Contamination Milk Powders Principal Component Analysis Triazines Urea
spellingShingle	F-PCA KNN Milk adulteration Rapid screening methods Voltammetry F-PCA Functional principal component analysis KNN Milk adulterations Rapid screening Screening methods Significant differences Voltammetric data Cyclic voltammetry Metabolism Principal component analysis Voltammetry Urea melamine triazine derivative urea animal article chemistry dairy product f-PCA food contamination KNN methodology milk milk adulteration potentiometry powder principal component analysis rapid screening methods f-PCA KNN milk adulteration rapid screening methods voltammetry Animals Dairy Products Food Contamination Milk Powders Principal Component Analysis Triazines Urea Hilding-Ohlsson, A. Fauerbach, J.A. Sacco, N.J. Bonetto, M.C. Cortón, E. Voltamperometric discrimination of urea and melamine adulterated skimmed milk powder
topic_facet	F-PCA KNN Milk adulteration Rapid screening methods Voltammetry F-PCA Functional principal component analysis KNN Milk adulterations Rapid screening Screening methods Significant differences Voltammetric data Cyclic voltammetry Metabolism Principal component analysis Voltammetry Urea melamine triazine derivative urea animal article chemistry dairy product f-PCA food contamination KNN methodology milk milk adulteration potentiometry powder principal component analysis rapid screening methods f-PCA KNN milk adulteration rapid screening methods voltammetry Animals Dairy Products Food Contamination Milk Powders Principal Component Analysis Triazines Urea
description	Nitrogen compounds like urea and melamine are known to be commonly used for milk adulteration resulting in undesired intoxication; a well-known example is the Chinese episode occurred in 2008. The development of a rapid, reliable and economic test is of relevance in order to improve adulterated milk identification. Cyclic voltammetry studies using an Au working electrode were performed on adulterated and non-adulterated milk samples from different independent manufacturers. Voltammetric data and their first derivative were subjected to functional principal component analysis (f-PCA) and correctly classified by the KNN classifier. The adulterated and non-adulterated milk samples showed significant differences. Best results of prediction were obtained with first derivative data. Detection limits in milk samples adulterated with 1% of its total nitrogen derived from melamine or urea were as low as 85.0 mg·L-1 and 121.4 mg·L-1, respectively. We present this method as a fast and robust screening method for milk adulteration analysis and prevention of food intoxication. © 2012 by the authors; licensee MDPI, Basel, Switzerland.
format	Artículo Artículo publishedVersion
author	Hilding-Ohlsson, A. Fauerbach, J.A. Sacco, N.J. Bonetto, M.C. Cortón, E.
author_facet	Hilding-Ohlsson, A. Fauerbach, J.A. Sacco, N.J. Bonetto, M.C. Cortón, E.
author_sort	Hilding-Ohlsson, A.
title	Voltamperometric discrimination of urea and melamine adulterated skimmed milk powder
title_short	Voltamperometric discrimination of urea and melamine adulterated skimmed milk powder
title_full	Voltamperometric discrimination of urea and melamine adulterated skimmed milk powder
title_fullStr	Voltamperometric discrimination of urea and melamine adulterated skimmed milk powder
title_full_unstemmed	Voltamperometric discrimination of urea and melamine adulterated skimmed milk powder
title_sort	voltamperometric discrimination of urea and melamine adulterated skimmed milk powder
publishDate	2012
url	http://hdl.handle.net/20.500.12110/paper_14248220_v12_n9_p12220_HildingOhlsson http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_14248220_v12_n9_p12220_HildingOhlsson_oai
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Voltamperometric discrimination of urea and melamine adulterated skimmed milk powder

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