Homogeneous electrochemical detection of ochratoxin A in foodstuff using aptamer–graphene oxide nanosheets and DNase I-based target recycling reaction

2017 ◽  
Vol 89 ◽  
pp. 659-665 ◽  
Author(s):  
Ai-Li Sun ◽  
Yan-Fang Zhang ◽  
Guo-Peng Sun ◽  
Xuan-Nian Wang ◽  
Dianping Tang
Keyword(s):  
Graphene Oxide ◽  
Ochratoxin A ◽  
Electrochemical Detection ◽  
Dnase I ◽  
Graphene Oxide Nanosheets ◽  
Target Recycling

A potentiometric aptasensor for carcinoembryonic antigen (CEA) on graphene oxide nanosheets using catalytic recycling of DNase I with signal amplification

2018 ◽  
Vol 10 (45) ◽  
pp. 5364-5371 ◽  
Author(s):  
Zhilin Hong ◽  
Genwang Chen ◽  
Shaoyang Yu ◽  
Rongfu Huang ◽  
Chunmei Fan
Keyword(s):  
Graphene Oxide ◽  
Carcinoembryonic Antigen ◽  
Modified Electrode ◽  
Signal Amplification ◽  
Dnase I ◽  
Label Free ◽  
Graphene Oxide Nanosheets ◽  
Target Recycling

A label-free potentiometric aptasensing platform was designed for detection of carcinoembryonic antigen on a graphene oxide-modified electrode coupling with target recycling-assisted signal amplification.

Ultrasensitive electrochemical detection of ochratoxin A based on signal amplification by one-pot synthesized flower-like PEDOT–AuNFs supported on a graphene oxide sponge

The Analyst ◽  
2019 ◽  
Vol 144 (19) ◽  
pp. 5866-5874 ◽  
Author(s):  
Pengxiang Wang ◽  
Luyan Wang ◽  
Mei Ding ◽  
Meishan Pei ◽  
Wenjuan Guo
Keyword(s):  
Graphene Oxide ◽  
Ochratoxin A ◽  
Electrochemical Detection ◽  
Signal Amplification ◽  
Electrochemical Aptasensor ◽  
One Pot ◽  
Additional Signal

An ultrasensitive electrochemical aptasensor without additional signal amplifiers was designed to detect OTA, and it was based on flower-like PEDOT–AuNFs supported on GOS.

Cuprous oxide microspheres on graphene nanosheets: an enhanced material for non-enzymatic electrochemical detection of H2O2 and glucose

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 35338-35345 ◽  
Author(s):  
Junwei Ding ◽  
Wei Sun ◽  
Gang Wei ◽  
Zhiqiang Su
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Reduced Graphene Oxide ◽  
Electrochemical Detection ◽  
Cuprous Oxide ◽  
Graphene Nanosheets ◽  
Graphene Oxide Nanosheets ◽  
Sensor Material ◽  
Reduced Graphene

Reduced graphene oxide nanosheets decorated with cuprous oxide microspheres show improved performances as a novel electrochemical sensor material.

Aptasensor for the Detection of Ochratoxin A Using Graphene Oxide and Deoxyribonuclease I-Aided Signal Amplification

2021 ◽  
Vol 21 (9) ◽  
pp. 4573-4578
Author(s):  
Weixia Chen ◽  
Yu Kang ◽  
Lan Qin ◽  
Juan Jiang ◽  
Ying Zhao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Detection Limit ◽  
Ochratoxin A ◽  
Signal Amplification ◽  
Linear Response ◽  
Food Samples ◽  
Dnase I ◽  
Fluorescence Signal ◽  
Deoxyribonuclease I ◽  
Sensitive Sensor

In this investigation, a sensitive sensor for ochratoxin A detection was designed based on graphene oxide (GO) and DNase I for amplified fluorescence signal. The outcomes of this investigation indicated that this exploratory platform exhibited efficient sensitivity and good selectivity for ochratoxin A when existence of other toxins. The proposed sensor displayed a linear response over a range of 100–1000 nM (R2 = 0.986) with a low detection limit of 38.2 nM (S/N = 3) and showed remarkable convenience. In addition, the constructed sensor was examined by testing real food samples spiked with different concentrations of ochratoxin A. Results demonstrated that the constructed sensor provided an effective method for ochratoxin A evaluate in complicated food sample analyses.

Electrochemical detection of guaiacol in bamboo juice based on the enhancement effect of RGO nanosheets

2014 ◽  
Vol 6 (8) ◽  
pp. 2729-2735 ◽  
Author(s):  
Yan Wu ◽  
Meng Huang ◽  
Nannan Song ◽  
Weibing Hu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrochemical Detection ◽  
Glassy Carbon ◽  
Carbon Materials ◽  
Electrochemical Behaviour ◽  
Enhancement Effect ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene ◽  
Hydrothermal Reduction

The electrochemical behaviour of guaiacol was studied on different carbon materials surfaces. Compared with bare glassy carbon, graphite and graphene oxide, the reduced graphene oxide nanosheets which were chemically synthesized by a hydrothermal reduction exhibited the strongest enhancement effect, and the electrochemical oxidation response of guaiacol was remarkably improved.

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