Hydrogen-Bonding Recognition-Induced Color Change of Gold Nanoparticles for Visual Detection of Melamine in Raw Milk and Infant Formula

2009 ◽  
Vol 131 (27) ◽  
pp. 9496-9497 ◽  
Author(s):  
Kelong Ai ◽  
Yanlan Liu ◽  
Lehui Lu
Keyword(s):  
Gold Nanoparticles ◽  
Hydrogen Bonding ◽  
Infant Formula ◽  
Visual Detection ◽  
Color Change ◽  
Raw Milk

Visual detection of 8-OHdG based on the aggregation of gold nanoparticles capped with the anti-8-OHdG antibody

2015 ◽  
Vol 7 (19) ◽  
pp. 8360-8365 ◽  
Author(s):  
Liping Wu ◽  
Wendan Pu ◽  
Yue Liu ◽  
Huawen Zhao ◽  
Weiqun Shu
Keyword(s):  
Gold Nanoparticles ◽  
Quantitative Determination ◽  
Rapid Method ◽  
Visual Detection ◽  
Color Change ◽  
Naked Eye ◽  
Absorption Wavelength

AuNPs, capped with anti-8-OHdG antibody, aggregate when 8-OHdG was added, resulting in color change and redshift of absorption wavelength. So a simple and rapid method to selectively determine 8-OHdG was developed and semi-quantitative determination could be achieved by the naked eye.

Visual detection of melamine in raw milk using gold nanoparticles as colorimetric probe

2010 ◽  
Vol 122 (3) ◽  
pp. 895-900 ◽  
Author(s):  
Li Li ◽  
Baoxin Li ◽  
Di Cheng ◽  
Lihui Mao
Keyword(s):  
Gold Nanoparticles ◽  
Visual Detection ◽  
Raw Milk ◽  
Colorimetric Probe

Microfluidic paper-based analytical device using gold nanoparticles modified with N,N′-bis(2-hydroxyethyl)dithiooxamide for detection of Hg(ii) in air, fish and water samples

2020 ◽  
Vol 44 (43) ◽  
pp. 18662-18667
Author(s):  
Sattar Shariati ◽  
Gholamreza Khayatian
Keyword(s):  
Gold Nanoparticles ◽  
Water Samples ◽  
Visual Detection ◽  
Color Change ◽  
Digital Camera ◽  
New Method ◽  
Naked Eye ◽  
Analytical Device

A new method for visual detection of mercury by color change is developed that can detect Hg2+ by the naked eye or a digital camera.

scholarly journals Chip-based visual detection of microRNA using DNA-functionalized gold nanoparticles

2016 ◽  
Vol 59 (5) ◽  
pp. 510-515 ◽  
Author(s):  
Ping Wang ◽  
Jianlong Zhao ◽  
Bin Hu ◽  
Zule Cheng ◽  
Yanan Bai ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Visual Detection ◽  
Functionalized Gold Nanoparticles

Visual detection of carbonate ions by inverse opal photonic crystal polymers in aqueous solution

2015 ◽  
Vol 3 (37) ◽  
pp. 9524-9527 ◽  
Author(s):  
Lu Li ◽  
Bin Zhao ◽  
Yue Long ◽  
Jin-Ming Gao ◽  
Guoqiang Yang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photonic Crystal ◽  
Polymer Films ◽  
Visual Detection ◽  
Color Change ◽  
Ph Dependence ◽  
Inverse Opal ◽  
Carbonate Ions ◽  
Crystal Polymer

This communication demonstrates a facile method to detect CO32− by naked eyes through color change based on the pH dependence of inverse opal photonic crystal polymer films.

scholarly journals Sensitive Visual Detection of AHPND Bacteria Using Loop-Mediated Isothermal Amplification Combined with DNA-Functionalized Gold Nanoparticles as Probes

PLoS ONE ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. e0151769 ◽  
Author(s):  
Narong Arunrut ◽  
Jantana Kampeera ◽  
Sarawut Sirithammajak ◽  
Piyachat Sanguanrut ◽  
Porranee Proespraiwong ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Visual Detection ◽  
Isothermal Amplification ◽  
Loop Mediated Isothermal Amplification ◽  
Functionalized Gold Nanoparticles

scholarly journals MAILLARD REACTIONS – AN IMPORTANT FACTOR OF THE SAFETY AND QUALITY OF INFANT FORMULA

2018 ◽  
Vol 63 (4) ◽  
pp. 30-42
Author(s):  
I. N. Skidan ◽  
C. Prosser ◽  
I. N. Zakharova
Keyword(s):  
Infant Formula ◽  
Milk Proteins ◽  
Goat Milk ◽  
Raw Milk ◽  
Biological Properties ◽  
Maillard Reaction Products ◽  
Powdered Infant Formula ◽  
Reaction Products ◽  
Maillard Reactions

The physicochemical properties of infant adapted milk formulae that affect their tolerability and effectiveness depend on the composition and quality of the raw ingredients, the production process, the storage conditions and the quality control of the finished products. The technology of manufacturing a powdered infant formula includes a variety of methodsfor processing componentsthat make up its composition, including raw milk. This processing is accompanied by a noticeable change in a number of physical, chemical and biological properties of the individual components of milk, their loss, the formation of fundamentally new chemical compounds. The most frequent reactions observed during the heat treatment of milk include the formation of bonds between reactive carbonyl groups of the sugar and the amino groups of amino acids, followed by the appearance of a large number of low- and high-molecular compounds, the so-called Maillard Reaction Products(MRP). The study of MRP in recent years hasincreasingly attracted the attention of medical practitioners because of the discovery of these compounds in infant formula and their potential danger to children’s health. This review provides evidence that powdered infant adapted formulae produced with an original technology based on whole goat milk with a native ratio of the main groups of milk proteins(whey – 20% and casein – 80%) have a minimum potential for unwanted effects associated with MRP.

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