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Hydrogen-Bonding Recognition-Induced Color Change of Gold Nanoparticles for Visual Detection of Melamine in Raw Milk and Infant Formula
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Section:Abstract
The color change induced by triple hydrogen-bonding recognition between melamine and a cyanuric acid derivative grafted on the surface of gold nanoparticles can be used for reliable detection of melamine. Since such a color change can be readily seen by the naked eye, the method enables on-site and real-time detection of melamine in raw milk and infant formula even at a concentration as low as 2.5 ppb without the aid of any advanced instruments.
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This article has been cited by 13 ACS Journal articles (5 most recent appear below).
Discrete Assembly of Synthetic Peptide–DNA Triplex Structures from Polyvalent Melamine–Thymine Bifacial Recognition
Yingying Zeng, Yaowalak Pratumyot, Xijun Piao, and Dennis BongJournal of the American Chemical Society2012 134 (2), 832-835Discrete Assembly of Synthetic Peptide–DNA Triplex Structures from Polyvalent Melamine–Thymine Bifacial Recognition
Yingying Zeng, Yaowalak Pratumyot, Xijun Piao, and Dennis BongJournal of the American Chemical Society2012 134 (2), 832-835We have designed a 21-residue α-peptide that simultaneously recognizes two decadeoxyoligothymidine (dT10) tracts to form triplexes with a peptide–DNA strand ratio of 1:2. The synthetic peptide side chain displays 10 melamine rings, which provide a ...
Development of Gold Nanoparticle-Based Rapid Detection Kit for Melamine in Milk Products
Qingqing Zhou, Nan Liu, Zhiwei Qie, Ying Wang, Baoan Ning, and Zhixian GaoJournal of Agricultural and Food Chemistry2011 59 (22), 12006-12011Development of Gold Nanoparticle-Based Rapid Detection Kit for Melamine in Milk Products
Qingqing Zhou, Nan Liu, Zhiwei Qie, Ying Wang, Baoan Ning, and Zhixian GaoJournal of Agricultural and Food Chemistry2011 59 (22), 12006-12011A reliable and sensitive kit for the rapid detection of melamine (Mel) was developed. The kit is based on gold nanoparticle (Au NP) probe and includes a standard colorimetric card. The Au NPs were prepared by sodium borohydride reduction and characterized ...
Single-Run Electrochemical Determination of Melamine in Dairy Products and Pet Foods
Chen-Wei Liao, Yue-Ru Chen, Jen-Lin Chang, and Jyh-Myng ZenJournal of Agricultural and Food Chemistry2011 Article ASAPSingle-Run Electrochemical Determination of Melamine in Dairy Products and Pet Foods
Chen-Wei Liao, Yue-Ru Chen, Jen-Lin Chang, and Jyh-Myng ZenJournal of Agricultural and Food Chemistry2011 Article ASAPA simple electrochemical approach, which does not require any expensive and complex instruments, is established for the selective and quantitative recognition of melamine in diary products and pet foods. During a preconcentration step (at 1.8 V versus Ag/...
New Method for Affinity Adsorbent Screening Using Gold Colloids
Jun Wang, Wei Wang, Qinqin Wei, Saihui Zhang, and Zhi YuanLangmuir2011 Article ASAPNew Method for Affinity Adsorbent Screening Using Gold Colloids
Jun Wang, Wei Wang, Qinqin Wei, Saihui Zhang, and Zhi YuanLangmuir2011 Article ASAPA rapid, effective method for the screening of adsorbent ligands based on the unique optical properties of gold colloid has been developed. Different interactions between adsorbate and ligands induce different states of aggregation of the gold colloid, ...
Direct Detection of Beta-agonists Using Gold Nanoparticle-Based Colorimetric Assays
Pingli He , Li Shen , Rongyuan Liu , Zhiping Luo , and Zhen LiAnalytical Chemistry 0 (ja),Direct Detection of Beta-agonists Using Gold Nanoparticle-Based Colorimetric Assays
Pingli He , Li Shen , Rongyuan Liu , Zhiping Luo , and Zhen LiAnalytical Chemistry 0 (ja),Beta-agonists fed to animals for human consumption poses serious threat to human health. Fast, broad spectrum detection methods are needed for on-site screening of various types of beta-agonists from animal feeds, meats and animal body fluids. We ...
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History
- Published In Issue July 15, 2009
- Article ASAPJune 18, 2009
- Received: May 7, 2009
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