Analytical methods and recent developments in the detection of melamine

Sun, Fenglian; Ma, Wei; Xu, Liguang; Zhu, Yinyue; Liu, Liqiang; Peng, Chifang; Wang, Libing; Kuang, Hua

doi:10.1016/j.trac.2010.06.011

Cited by 175 publications

(100 citation statements)

References 56 publications

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“…Although methods have been utilized to detect MEL, not all of these are satisfactory. For example, high-performance liquid chromatography alone [17][18][19] or combined with tandem mass spectrometry (MS/MS), [18][19][20] gas chromatographymass spectrometry, 21 capillary electrophoresis, 22 infrared spectroscopy, 23,24 and nuclear magnetic resonance spectroscopy 25 are highly sensitive but require complicated pretreatment procedures and expensive instruments and equipment. Moreover, most of these tests require large amounts of organic solvents that are dangerous to user health and harmful to the environment.…”

Section: Introductionmentioning

confidence: 99%

Lateral flow test strip based on colloidal selenium immunoassay for rapid detection of melamine in milk, milk powder, and animal feed

Wang¹,

Zhi²,

Zhao³

et al. 2014

IJN

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Although high melamine (MEL) intake has been proven to cause serious health problems, MEL is sometimes illegally added to milk products and animal feed, arousing serious food safety concerns. A satisfactory method of detecting MEL in onsite or in-home testing is in urgent need of development. This work aimed to explore a rapid, convenient, and cost-effective method of identifying MEL in milk products or other food by colloidal selenium-based lateral flow immunoassay. Colloidal selenium was synthesized by L-ascorbic acid to reduce seleninic acid at room temperature. After conjugation with a monoclonal antibody anti-MEL, a test strip was successfully prepared. The detection limit of the test strip reached 150 μg/kg, 1,000 μg/kg, and 800 μg/kg in liquid milk, milk powder, and animal feed, respectively. No cross-reactions with homologues cyanuric acid, cyanurodiamide, or ammelide were found. Moreover, the MEL test strip can remain stable after storage for 1 year at room temperature. Our results demonstrate that the colloidal selenium MEL test strip can detect MEL in adulterated milk products or animal feed conveniently, rapidly, and sensitively. In contrast with a colloidal gold MEL test strip, the colloidal selenium MEL test strip was easy to prepare and more cost-efficient.

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Section: Introductionmentioning

confidence: 99%

Lateral flow test strip based on colloidal selenium immunoassay for rapid detection of melamine in milk, milk powder, and animal feed

Wang¹,

Zhi²,

Zhao³

et al. 2014

IJN

View full text Add to dashboard Cite

show abstract

“…There were many analytical methods for detecting melamine. 23 Vibrational spectroscopy, such as Raman spectrometry, near-or mid-infrared spectroscopy, was a good way to detect melamine because of their advantages compared to other methods. 24,25 Comparing with these techniques, NIRM imaging have advantages to detect the adulterant.…”

Section: Introductionmentioning

confidence: 99%

Rapid screening and visual tracing of melamine in soybean meal by NIR microscopy imaging

Yang

Wang

Han

et al. 2014

J. Innov. Opt. Health Sci.

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Near infrared microscopy imaging o®ers the opportunity to explore not only what kinds of chemical species are present at micro-scale level but also where the chemical species would be present. By revealing the spectral and spatial information, the technique can identify and localize any interested component. This study investigates the feasibility of using Near infrared microscopy imaging to detect melamine in soybean meal. The results showed that 6805 cm À1 is very sensitive for melamine but not for soybean meal, so can be used for univariate analysis. Single wavelength image and peak integration image at 6805 cm À1 are simple and e®ective methods to detect the melamine in soybean meal. Furthermore, Principal Component Analysis is applied to detect the melamine in soybean meal.

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“…Such triple hydrogen bonding is considered to be particularly useful for controlling molecular self-assembly due to the reversibility, specificity, directionality, and the cumulative mutual interactions of them. On the other hand, there is no similar interaction between the naked-AgNPs and melamine according to the previous report, [25][26][27][28] but the p-NBSmodified AgNPs turned out to be highly sensitive to the presence of melamine. The amino ligands of melamine acted as a strong electron donor, whilst p-NBS was a strong electron acceptor.…”

Section: Recognition Mechanisms For Both Nanoparticlesmentioning

confidence: 68%

Comparative Studies on the Quick Recognition of Melamine Using Unmodified Gold Nanoparticles and p‐Nitrobenzenesulfonic Grafted Silver Nanoparticles

Bai

Dong

Zhang

et al. 2011

J Chinese Chemical Soc

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Both unmodified gold nanoparticles (AuNPs) and p-nitrobenzenesulfonic (p-NBS) grafted silver nanoparticles (AgNPs) were prepared by chemical synthesis, respectively. They could be used for visual detection via the interaction with the twelve amide compounds including melamine. These color changes could be seen with the naked eye directly and monitored by ultraviolet visible (UV-Vis) absorbance spectra. The recognition mechanism for both nanoparticles was comparatively investigated by the addition of glutathione (GSH) in the presence of melamine, respectively. The triple hydrogen bonding recognition and the attractive van der Waals interactions between melamine (0.5 mg/L) and AuNPs were responsible for the color change during its aggregation (red-to-purple or blue), whilst the electron donor-acceptor interaction between melamine (0.2 mg/L) and p-NBS modified on the surface of AgNPs resulted in the color changes (yellow-to-grey or dark green).

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Analytical methods and recent developments in the detection of melamine

Cited by 175 publications

References 56 publications

Lateral flow test strip based on colloidal selenium immunoassay for rapid detection of melamine in milk, milk powder, and animal feed

Lateral flow test strip based on colloidal selenium immunoassay for rapid detection of melamine in milk, milk powder, and animal feed

Rapid screening and visual tracing of melamine in soybean meal by NIR microscopy imaging

Comparative Studies on the Quick Recognition of Melamine Using Unmodified Gold Nanoparticles and p‐Nitrobenzenesulfonic Grafted Silver Nanoparticles

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