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Visual detection of melamine in milk products by label-free gold nanoparticles.
Talanta. 2010 Oct 15; 82(5):1654-8.T

Abstract

A simple, rapid, field-portable colorimetric method for the detection of melamine based on melamine-induced color change of label-free gold nanoparticles (Au NPs) was developed in this study. Melamine can induced the aggregation of Au NPs and results in the color change from wine-red to purple, which provided a platform for rapid and field-portable colorimetric detection of melamine. The proposed method can be used to detect melamine in liquid milk and infant formula with a detection limit of 1.0 and 4.2ppm, respectively, within 30min by naked eyes observation without the aid of any advanced instrument and the need of any complex pretreatment, and detect as low as 0.15ppm of melamine in liquid milk and 2.5ppm of melamine in infant formula with UV-vis-spectroscopy. The proposed method is promising for on-site screening of melamine adulterant in milk products.

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Publisher Full Text

Authors+Show Affiliations

Guo L
Ministry of Education Key Laboratory of Analysis and Detection for Food Safety (Fuzhou University), Fuzhou, Fujian 350108, China. lqguo@fzu.edu.cn
Zhong J
No affiliation info available
Wu J
No affiliation info available
Fu F
No affiliation info available
Chen G
No affiliation info available
Zheng X
No affiliation info available
Lin S
No affiliation info available

MeSH

AnimalsChloroformColorimetryFood ContaminationGoldHumansIndicators and ReagentsInfantInfant FormulaLimit of DetectionMetal NanoparticlesMilkReproducibility of ResultsTime FactorsTriazinesTrichloroacetic Acid

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20875559

Citation

Guo, Liangqia, et al. "Visual Detection of Melamine in Milk Products By Label-free Gold Nanoparticles." Talanta, vol. 82, no. 5, 2010, pp. 1654-8.
Guo L, Zhong J, Wu J, et al. Visual detection of melamine in milk products by label-free gold nanoparticles. Talanta. 2010;82(5):1654-8.
Guo, L., Zhong, J., Wu, J., Fu, F., Chen, G., Zheng, X., & Lin, S. (2010). Visual detection of melamine in milk products by label-free gold nanoparticles. Talanta, 82(5), 1654-8. https://doi.org/10.1016/j.talanta.2010.07.035
Guo L, et al. Visual Detection of Melamine in Milk Products By Label-free Gold Nanoparticles. Talanta. 2010 Oct 15;82(5):1654-8. PubMed PMID: 20875559.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Visual detection of melamine in milk products by label-free gold nanoparticles. AU - Guo,Liangqia, AU - Zhong,Jianhai, AU - Wu,Jinmei, AU - Fu,Fengfu, AU - Chen,Guonan, AU - Zheng,Xiaoyan, AU - Lin,Song, Y1 - 2010/08/04/ PY - 2010/05/06/received PY - 2010/07/16/revised PY - 2010/07/16/accepted PY - 2010/9/30/entrez PY - 2010/9/30/pubmed PY - 2011/1/29/medline SP - 1654 EP - 8 JF - Talanta JO - Talanta VL - 82 IS - 5 N2 - A simple, rapid, field-portable colorimetric method for the detection of melamine based on melamine-induced color change of label-free gold nanoparticles (Au NPs) was developed in this study. Melamine can induced the aggregation of Au NPs and results in the color change from wine-red to purple, which provided a platform for rapid and field-portable colorimetric detection of melamine. The proposed method can be used to detect melamine in liquid milk and infant formula with a detection limit of 1.0 and 4.2ppm, respectively, within 30min by naked eyes observation without the aid of any advanced instrument and the need of any complex pretreatment, and detect as low as 0.15ppm of melamine in liquid milk and 2.5ppm of melamine in infant formula with UV-vis-spectroscopy. The proposed method is promising for on-site screening of melamine adulterant in milk products. SN - 1873-3573 UR - https://www.unboundmedicine.com/medline/citation/20875559/Visual_detection_of_melamine_in_milk_products_by_label_free_gold_nanoparticles_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0039-9140(10)00565-5 DB - PRIME DP - Unbound Medicine ER -