نتایج جستجو برای: melamine

تعداد نتایج: 1559  

2015
C. W. Cruywagen T. Calitz

Copyright resides with the authors in terms of the Creative Commons Attribution 2.5 South African Licence. See: http://creativecommons.org/licenses/by/2.5/za Condition of use: The user may copy, distribute, transmit and adapt the work, but must recognise the authors and the South African Journal of Animal Science. _________________________________________________________________________________...

The contamination of melamine was evaluated in 69 infants along with follow up formula samples collected from the market for the first time in Iran using HPLC method. Since there are no previous data concerning the contamination level of melamine in all brands of infant formula samples consumed using the HPLC method in Iran, this study is the first investigation in this regard. Our results show...

Journal: :The Analyst 2015
Ya Wang Junying Zhang Linling Zhu Linlin Lu Chongchong Feng Fengyang Wang Zhiai Xu Wen Zhang

Based on melamine binding-triggered triplex formation and subsequent activation of Mg(2+)-dependent DNAzymes, a novel strategy for DNAzyme regulation was proposed and developed for melamine recognition.

Journal: :The Analyst 2015
Wenying Fan Mingqi Gao Man He Beibei Chen Bin Hu

In this work, a molecularly imprinted polymer (MIP) coated stir bar was prepared using a self-designed polytetrafluoroethylene (PTFE) mold and in situ polymerization, with cyromazine as the dummy template for the target melamine. The prepared MIP coated stir bar presented a uniform and porous surface as well as good chemical stability and selectivity for melamine. Based on it, a method of MIP c...

Journal: :Asia Pacific journal of clinical nutrition 2016
Jian Guo Wen Xin Jian Liu Zhi Min Wang Tian Fang Li Mark L Wahlqvist

The melamine contaminated milk powder contamination scandal occurred in China in 2008. Its main consequences so far have been urinary stone formation in children with associated renal damage and increased child mortality. Eight years have passed, but food safety issues still remain of concern in the daily lives of millions of Chinese. Vigilance is required to ensure no recurrence of such food s...

Journal: :Toxicology letters 2010
Jia-Jia Yang Zhuo Yang Tao Zhang

Since the melamine-contamination event happened in September 2008, there have been lots of studies about melamine toxicity, but very limited studies focused on central nervous system (CNS). In the present study, we investigated the effects of melamine (5x10(-4), 5x10(-5) and 5x10(-6)g/ml) on voltage-gated sodium channels (VGSCs) in hippocampal CA1 neurons using whole-cell patch-clamp recordings...

2014

Melamine is an adulterant commonly found in milk, as it can increase the nitrogen content. Therefore, its apparent protein content, resulting in a better market price. Melamine adulteration can be fatal, as was highlighted in 2008 when six infants died due to melamine adulteration in milk powder and thousands were sickened in China. Consequently, there have been stricter regulations globally an...

2013
Bob Weinhold

Melamine and its potential toxicity have drawn increased attention since a 2008 crisis in China in which milk, infant formula, and other foods were illegally laced with the chemical in order to increase their apparent protein content. That contamination affected an estimated 294,000 infants and children, with more than 50,000 hospitalizations and at least 6 deaths. In a new analysis of specific...

2008
W. H. Tolleson G. W. Diachenko D. Folmer D. Doell D. Heller

* The views presented in this article do not necessarily reflect those of the United States Food and Drug Administration. 1 This chemistry background paper briefly summarizes key information on melamine related to past contamination incidents, uses, chemical structures and physicochemical properties (including the related triazines: cyanuric acid, ammeline and ammelide), manufacturing processes...

Journal: :Physical review letters 2012
Manuela Mura Fabien Silly Victor Burlakov Martin R Castell G Andrew D Briggs Lev N Kantorovich

A novel mechanism of hybrid assembly of molecules on surfaces is proposed stemming from interactions between molecules and on-surface metal atoms which eventually got trapped inside the network pores. Based on state-of-the-art theoretical calculations, we find that the new mechanism relies on formation of molecule-metal atom pairs which, together with molecules themselves, participate in the as...

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