Detection of Melamine in Gluten, Chicken Feed, and Processed Foods Using Surface Enhanced Raman Spectroscopy and HPLC
Top Cited Papers
- 8 October 2008
- journal article
- Published by Wiley in Journal of Food Science
- Vol. 73 (8), T129-T134
- https://doi.org/10.1111/j.1750-3841.2008.00901.x
Abstract
Melamine, a nitrogen-rich chemical, was implicated in pet and human food recalls in 2007, which caused enormous economic losses to the food industry. In this study, melamine concentration in wheat gluten, chicken feed, and processed foods (that is, cake and noodle) was measured by surface enhanced Raman spectroscopy (SERS) in combination with SERS-active substrates. SERS was able to rapidly detect 0.1% melamine in wheat gluten, 0.05% in chicken feed, 0.05% in cakes, and 0.07% in noodle, respectively. A partial least squares (PLS) model was established for the quantification of melamine in foods by SERS: R= 0.90, RMSEP = 0.33. In addition, SERS results were verified by HPLC analysis based on a simplified FDA method. Compared with HPLC, the SERS method is much faster and simpler, requires minimum sample preparation, but still yields satisfactory qualitative and quantitative results. These results demonstrate that it is an applicable approach to use SERS to screen foods, eliminate presumptive negative samples of melamine contamination from the sample population, and then verify presumptive positive samples using HPLC protocols. Combining these 2 methods could provide a more rapid and cost-effective way for monitoring melamine contamination in increasingly large numbers of imported foods and feed products.Keywords
This publication has 16 references indexed in Scilit:
- Raman-based detection of bacteria using silver nanoparticles conjugated with antibodiesThe Analyst, 2007
- Biodegradation of melamine formaldehyde by Micrococcus sp. strain MF-1 isolated from aminoplastic wastewater effluentInternational Biodeterioration & Biodegradation, 2006
- Surface-Enhanced Raman SpectroscopyAnalytical Chemistry, 2005
- Residue determination of cyromazine and its metabolite melamine in chard samples by ion-pair liquid chromatography coupled to electrospray tandem mass spectrometryAnalytica Chimica Acta, 2004
- Surface-enhanced Raman scattering and biophysicsJournal of Physics: Condensed Matter, 2002
- Surface-Enhanced Raman Spectroscopy in Single Living Cells Using Gold NanoparticlesApplied Spectroscopy, 2002
- Infrared Spectroscopy in MicrobiologyPublished by Wiley ,2000
- The applications of Raman spectroscopy in food scienceTrends in Food Science & Technology, 1996
- Adsorption and Displacement of Melamine at the Ag/Electrolyte Interface Probed by Surface-Enhanced Raman Microprobe SpectroscopyThe Journal of Physical Chemistry, 1996
- Release of formaldehyde and melamine from tableware made of melamine — formaldehyde resinFood Additives & Contaminants: Part A, 1990