A universal strategy for visual chiral recognition of α-amino acids with l-tartaric acid-capped gold nanoparticles as colorimetric probes

The Analyst ◽  
2016 ◽  
Vol 141 (4) ◽  
pp. 1257-1265 ◽  
Author(s):  
Guoxin Song ◽  
Fulin Zhou ◽  
Chunli Xu ◽  
Baoxin Li
Keyword(s):  
Amino Acids ◽  
Gold Nanoparticles ◽  
Tartaric Acid ◽  
Chiral Recognition ◽  
Color Change ◽  
Blue Color ◽  
Left Handed

All of 19 right-handed α-amino acids can induce a red-to-blue color change of l-tartaric acid-capped AuNP solution, whereas all of the left-handed amino acids (except cysteine) cannot.

scholarly journals Correction: A universal strategy for visual chiral recognition of α-amino acids with l-tartaric acid-capped gold nanoparticles as colorimetric probes

The Analyst ◽  
2017 ◽  
Vol 142 (14) ◽  
pp. 2678-2678
Author(s):  
Guoxin Song ◽  
Fulin Zhou ◽  
Chunli Xu ◽  
Baoxin Li
Keyword(s):  
Amino Acids ◽  
Gold Nanoparticles ◽  
Tartaric Acid ◽  
Chiral Recognition

Correction for ‘A universal strategy for visual chiral recognition of α-amino acids with l-tartaric acid-capped gold nanoparticles as colorimetric probes’ by Guoxin Song et al., Analyst, 2016, 141, 1257–1265.

Green Chemistry in action: towards sustainable production of Gold nanoparticles

2016 ◽  
Vol 88 (1-2) ◽  
pp. 83-93 ◽  
Author(s):  
Robert L. Mnisi ◽  
Peter P. Ndibewu ◽  
Ntebogeng S. Mokgalaka
Keyword(s):  
Gold Nanoparticles ◽  
Colloidal Particles ◽  
Color Change ◽  
Blue Color ◽  
Nanoparticle Suspension ◽  
Renewable Material ◽  
Protein Nature ◽  
Negative Surface ◽  
Negative Surface Charge ◽  
Distinct Color

AbstractThis study reports the synthesis of gold nanoparticles from a gold precursor salt (HAuCl4·3H2O) using Moringa oleifera bark broth, a cheap renewable material, without adding external surfactant, capping agent or template. Biomolecules responsible for reducing Au3+ to Au0 and stabilization of the resulting nanoparticles were extracted from the bark, and the synthesis was monitored for precursor concentration, percentage broth, pH of reaction media and reaction time. The biosynthesized nanoparticles were characterized using spectroscopic (FTIR and UV-Vis) techniques, advanced microscopic imaging (HRTEM, SEM/EDS), and Zeta potential measurements. Distinct color change from yellow to wine red was observed, indicative of the formation of gold particles at nanoscale. The SPR band was found at around 550 nm, in agreement with conventional synthetic protocols. The particles were stable with a net negative surface charge (–20 mV), a contribution associated with the protein nature of the broth. Addition of Pb2+ to the polydisperse nanoparticle suspension resulted in a color shift, to a faint blue color, coupled with a corresponding SPR shift to higher wavelengths, depending on the concentration of Pb2+ added. This color change is attributed to the aggregation of the colloidal particles due to complexation effects of the metal ions with the biomolecules on the surface of the nanoparticles.

Smartphone-based colorimetric chiral recognition of ibuprofen using aptamers-capped gold nanoparticles

2017 ◽  
Vol 39 (3) ◽  
pp. 486-495 ◽  
Author(s):  
Jing Ping ◽  
Zhenjiang He ◽  
Jianshe Liu ◽  
Xuehui Xie
Keyword(s):  
Gold Nanoparticles ◽  
Chiral Recognition

Chiral Recognition and Separation of Amino Acids by Means of a Copper(II) Complex of Histamine Monofunctionalized .beta.-Cyclodextrin

1994 ◽  
Vol 116 (22) ◽  
pp. 10267-10274 ◽  
Author(s):  
Roberto Corradini ◽  
Arnaldo Dossena ◽  
Giuseppe Impellizzeri ◽  
Giuseppe Maccarrone ◽  
Rosangela Marchelli ◽  
...  
Keyword(s):  
Amino Acids ◽  
Chiral Recognition ◽  
Beta Cyclodextrin

The Use of Chiral Recognition in a Bioorganic System for Determination of Optical Purity of Labelled Amino Acids

2010 ◽  
Vol 91 (5) ◽  
pp. 491-491
Author(s):  
G. Bergson ◽  
C. Halldin ◽  
H. Lundqvist ◽  
B. Långström ◽  
M. Malmqvist
Keyword(s):  
Amino Acids ◽  
Chiral Recognition ◽  
Optical Purity

ChemInform Abstract: HOST-GUEST COMPLEXATION. 22. RECIPROCAL CHIRAL RECOGNITION BETWEEN AMINO ACIDS AND DILOCULAR SYSTEMS

1980 ◽  
Vol 11 (25) ◽  
Author(s):  
S. S. PEACOCK ◽  
D. M. WALBA ◽  
F. C. A. GAETA ◽  
R. C. HELGESON ◽  
D. J. CRAM
Keyword(s):  
Amino Acids ◽  
Chiral Recognition

New blood culture medium

1977 ◽  
Vol 6 (3) ◽  
pp. 249-256
Author(s):  
C N Shih ◽  
E Balish
Keyword(s):  
Blood Culture ◽  
Growth Medium ◽  
Color Change ◽  
Sodium Succinate ◽  
Blue Color ◽  
Contamination Control ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Unique System ◽  
Specific Oxidation

A growth medium with a specific oxidation-reduction potential containing peptone, dextrose, sodium succinate, sodium lactate, gelatin, sodium bicarbonate and blue tetrazolium, an indicator dye, in a tris(hydroxymethyl)aminomethane buffer was used to detect the presence of microorganisms in blood. The procedure involved the introduction of blood (and bacteria) into the growth medium with the dye in its colorless state. As the bacteria grew, they converted the dye to a visible blue color (formazan) with their reductases. The growth medium served as its own contamination control, since microbial growth and be detected by a color change before it was used for blood culture. The experiments described herein demonstrate that the composition of this medium (with the dye) provides a unique system that is able to make a reliable and rapid detection of both gram-positive and gram-negative microorganisms and yeasts (Candida albicans) commonly associated with bacteremia.

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