Ochratoxin A detection platform based on signal amplification by Exonuclease III and fluorescence quenching by gold nanoparticles

2018 ◽  
Vol 255 ◽  
pp. 1640-1645 ◽  
Author(s):  
Yangyang Zhao ◽  
Renjie Liu ◽  
Wenyi Sun ◽  
Lei Lv ◽  
Zhijun Guo
Keyword(s):  
Gold Nanoparticles ◽  
Fluorescence Quenching ◽  
Ochratoxin A ◽  
Signal Amplification ◽  
Exonuclease Iii

scholarly journals Aptamer-based fluorescent detection of ochratoxin A by quenching of gold nanoparticles

RSC Advances ◽  
2017 ◽  
Vol 7 (27) ◽  
pp. 16290-16294 ◽  
Author(s):  
Xin Lv ◽  
Yuanfu Zhang ◽  
Guofu Liu ◽  
Lingyun Du ◽  
Shuhao Wang
Keyword(s):  
Gold Nanoparticles ◽  
Fluorescence Quenching ◽  
Ochratoxin A ◽  
Low Cost ◽  
Fluorescent Detection ◽  
Quenching Effect ◽  
Highly Sensitive ◽  
Sensitive Method

A simple, rapid, low cost and highly sensitive method for the detection of ochratoxin A (OTA) was developed based on the principle that dispersed AuNPs show a better fluorescence quenching effect than aggregated AuNPs.

Gold nanoparticle-based exonuclease III signal amplification for highly sensitive colorimetric detection of folate receptor

Nanoscale ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 3055-3058 ◽  
Author(s):  
Xinjian Yang ◽  
Zhiqiang Gao
Keyword(s):  
Gold Nanoparticles ◽  
Small Molecule ◽  
Signal Amplification ◽  
Colorimetric Assay ◽  
Folate Receptor ◽  
Colorimetric Detection ◽  
Label Free ◽  
Exonuclease Iii ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

By combining terminal protection of small molecule (folate)-capped DNA probes, exonuclease III signal amplification and gold nanoparticles, we developed a simple and label-free colorimetric assay for highly sensitive detection of folate receptor.

A label-free aptasensor for ochratoxin a detection with signal amplification strategies on ultrathin micron-sized 2D MOF sheets

2021 ◽  
Vol 334 ◽  
pp. 129682
Author(s):  
Xiujuan Qiao ◽  
Xin Ma ◽  
Xiaoyu Ma ◽  
Tianli Yue ◽  
Qinglin Sheng
Keyword(s):  
Ochratoxin A ◽  
Signal Amplification ◽  
Label Free

A highly sensitive electrochemical microRNA-21 biosensor based on intercalating methylene blue signal amplification and a highly dispersed gold nanoparticles/graphene/polypyrrole composite

The Analyst ◽  
2021 ◽  
Vol 146 (8) ◽  
pp. 2679-2688
Author(s):  
Chammari Pothipor ◽  
Noppadol Aroonyadet ◽  
Suwussa Bamrungsap ◽  
Jaroon Jakmunee ◽  
Kontad Ounnunkad
Keyword(s):  
Methylene Blue ◽  
Gold Nanoparticles ◽  
Signal Amplification ◽  
Electrochemical Biosensor ◽  
Highly Sensitive ◽  
Highly Dispersed ◽  
Polypyrrole Composite ◽  
Amplification Strategy ◽  
Dispersed Gold ◽  
Potential Tool

An ultrasensitive electrochemical biosensor based on a gold nanoparticles/graphene/polypyrrole composite modified electrode and a signal amplification strategy employing methylene blue is developed as a potential tool for the detection of miRNA-21.

scholarly journals Fluorescence quenching/enhancement surface assays: Signal manipulation using silver-coated gold nanoparticles

2008 ◽  
Vol 454 (1-3) ◽  
pp. 85-90 ◽  
Author(s):  
Evgenia G. Matveeva ◽  
Tanya Shtoyko ◽  
Ignacy Gryczynski ◽  
Irina Akopova ◽  
Zygmunt Gryczynski
Keyword(s):  
Gold Nanoparticles ◽  
Fluorescence Quenching

Detection of Enzyme Activity through Catalytic Signal Amplification with Functionalized Gold Nanoparticles

2011 ◽  
Vol 123 (10) ◽  
pp. 2355-2360 ◽  
Author(s):  
Renato Bonomi ◽  
Alessandro Cazzolaro ◽  
Anna Sansone ◽  
Paolo Scrimin ◽  
Leonard J. Prins
Keyword(s):  
Gold Nanoparticles ◽  
Enzyme Activity ◽  
Signal Amplification ◽  
Functionalized Gold Nanoparticles

A novel electrochemical immunosensor based on dual signal amplification of gold nanoparticles and telomerase extension reaction

2014 ◽  
Vol 6 (7) ◽  
pp. 2221-2226 ◽  
Author(s):  
Xiao-Yan Li ◽  
Zi Yi ◽  
Hao Tang ◽  
Xia Chu ◽  
Ru-Qin Yu
Keyword(s):  
Gold Nanoparticles ◽  
Signal Amplification ◽  
Electrochemical Immunosensor ◽  
Highly Sensitive ◽  
Dual Signal Amplification

Highly sensitive electrochemical immune analysis was achieved based on dual signal amplification of AuNPs and telomerase extension reaction.

scholarly journals Degradation of Methyl Parathion, a common pesticide and fluorescence quenching of Rhodamine B, a carcinogen using β-d glucan stabilized gold nanoparticles

2018 ◽  
Vol 22 (8) ◽  
pp. 937-948 ◽  
Author(s):  
Sutanuka Pattanayak ◽  
Sharmila Chakraborty ◽  
Suman Biswas ◽  
Dipankar Chattopadhyay ◽  
Mukut Chakraborty
Keyword(s):  
Gold Nanoparticles ◽  
Fluorescence Quenching ◽  
Rhodamine B ◽  
Methyl Parathion
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