Selective and sensitive detection of lysozyme based on plasmon resonance light-scattering of hydrolyzed peptidoglycan stabilized-gold nanoparticles

The Analyst ◽  
2018 ◽  
Vol 143 (5) ◽  
pp. 1133-1140 ◽  
Author(s):  
Fei Fu ◽  
Linyao Li ◽  
Qingman Luo ◽  
Qingjin Li ◽  
Tingrui Guo ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Light Scattering ◽  
Plasmon Resonance ◽  
Resonance Light Scattering ◽  
Sensitive Detection ◽  
Scattering Signal

Simple, rapid, selective and sensitive detection of lysozyme based on plasmon resonance light scattering signal of hydrolyzed peptidoglycan stabilized-gold nanoparticles.

scholarly journals Detection of Quadruplex DNA by Gold Nanoparticles

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Heather F. Crouse ◽  
Alex Doudt ◽  
Cassie Zerbe ◽  
Swarna Basu
Keyword(s):  
Gold Nanoparticles ◽  
Light Scattering ◽  
Sample Preparation ◽  
Lower Limit ◽  
Dna Sequences ◽  
Plasmon Resonance ◽  
Limit Of Detection ◽  
Resonance Light Scattering ◽  
Quadruplex Dna ◽  
Different Types

Gold nanoparticles have been used as a probe to detect low (<10 ppb) concentrations of quadruplex DNA. These nanoparticles display a tendency to form aggregates in the presence of certain quadruplex forms, as observed via enhanced plasmon resonance light scattering (PRLS) signals. These nanoparticles showed differing degrees of interactions with different types of quadruplex and mixed sequences but no interaction with duplex DNA. Enhancement of PRLS signals greater than 50% was observed at nanomolar DNA concentration, and a lower limit of detection of 2.1 nM was established for three different quadruplex DNA sequences, including the thrombin-inhibiting single-stranded 15 mer aptamer DNA, d(GGTTGGTGTGGTTGG), and the double-stranded 12 mer DNA, d(G4T4G4). Two different sample preparation protocols were used for the PRLS experiments, and they yielded similar results.

A plasmon resonance light scattering assay of glucose based on the formation of gold nanoparticles

2014 ◽  
Vol 6 (11) ◽  
pp. 3779-3783 ◽  
Author(s):  
Wen Bi Wu ◽  
Lei Zhan ◽  
Jian Wang ◽  
Cheng Zhi Huang
Keyword(s):  
Gold Nanoparticles ◽  
Light Scattering ◽  
Plasmon Resonance ◽  
Resonance Light Scattering ◽  
Biocatalytic Reaction

A RLS assay for glucose based on the formation of AuNPs by coupling redox of H2O2 with biocatalytic reaction of GOx.

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