Fabrication of Highly Sensitive and Selective Electrochemical Sensors for Detection of Paracetamol by Using Piroxicam Stabilized Gold Nanoparticles

Pyoverdine is a fluorescent siderophore produced by Pseudomonas aeruginosa that can be considered as a detectable marker in nosocomial infections. The presence of pyoverdine in water can be directly linked to the presence of the P. aeruginosa, thus being a nontoxic and low-cost marker for the detection of biological contamination. A novel platform was developed and applied for the electrochemical selective and sensitive detection of pyoverdine, based on a graphene/graphite-modified screen-printed electrode (SPE) that was electrochemically reduced and decorated with gold nanoparticles (NPs). The optimized sensor presenting higher sensitivity towards pyoverdine was successfully applied for its detection in real samples (serum, saliva, and tap water), in the presence of various interfering species. The excellent analytical performances underline the premises for an early diagnosis kit of bacterial infections based on electrochemical sensors.

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Synthesis and application of polycation-stabilized gold nanoparticles as a highly sensitive sensor for molecular cysteine determination

Microchemical Journal ◽

10.1016/j.microc.2021.106481 ◽

2021 ◽

pp. 106481

Author(s):

Quang Khanh Nguyen ◽

Thi Hieu Hoang ◽

Xuan Thanh Bui ◽

Thi Anh Huong Nguyen ◽

Tien Duc Pham ◽

...

Keyword(s):

Gold Nanoparticles ◽

Highly Sensitive ◽

Sensitive Sensor

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A dual colorimetric probe for rapid environmental monitoring of Hg2+ and As3+ using gold nanoparticles functionalized with d-penicillamine

RSC Advances ◽

10.1039/d0ra08525a ◽

2021 ◽

Vol 11 (10) ◽

pp. 5456-5465

Author(s):

Su-Jin Yoon ◽

Yun-Sik Nam ◽

Yeonhee Lee ◽

In Hwan Oh ◽

Kang-Bong Lee

Keyword(s):

Gold Nanoparticles ◽

Environmental Monitoring ◽

Colorimetric Assay ◽

Colorimetric Probe ◽

Highly Sensitive ◽

Dual Detection

A highly sensitive and selective colorimetric assay for the dual detection of Hg2+ and As3+ using gold nanoparticles (AuNPs) conjugated with d-penicillamine (DPL) was developed.

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Electrochemical Biosensors in Food Safety: Challenges and Perspectives

Molecules ◽

10.3390/molecules26102940 ◽

2021 ◽

Vol 26 (10) ◽

pp. 2940

Author(s):

Antonella Curulli

Keyword(s):

Food Industry ◽

Electrochemical Sensors ◽

Cost Effective ◽

Electrochemical Biosensors ◽

Food Chains ◽

Sensing Systems ◽

Highly Sensitive ◽

Skilled Personnel ◽

Recent Developments ◽

Key Issues

Safety and quality are key issues for the food industry. Consequently, there is growing demand to preserve the food chain and products against substances toxic, harmful to human health, such as contaminants, allergens, toxins, or pathogens. For this reason, it is mandatory to develop highly sensitive, reliable, rapid, and cost-effective sensing systems/devices, such as electrochemical sensors/biosensors. Generally, conventional techniques are limited by long analyses, expensive and complex procedures, and skilled personnel. Therefore, developing performant electrochemical biosensors can significantly support the screening of food chains and products. Here, we report some of the recent developments in this area and analyze the contributions produced by electrochemical biosensors in food screening and their challenges.

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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 ◽

10.1039/d1an00116g ◽

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.

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Highly sensitive real-time detection of intracellular oxidative stress and application in mycotoxin toxicity evaluation based on living single-cell electrochemical sensors

The Analyst ◽

10.1039/d0an02015j ◽

2021 ◽

Author(s):

Lu Gao ◽

Jiadi Sun ◽

Liping Wang ◽

Qigao Fan ◽

Gaowen Zhu ◽

...

Keyword(s):

Oxidative Stress ◽

Electrochemical Sensor ◽

Single Cell ◽

Real Time ◽

Electrochemical Sensors ◽

Living Cells ◽

Selective Detection ◽

Toxicity Evaluation ◽

Highly Sensitive ◽

Intracellular Oxidative Stress

Single-cell electrochemical sensor is used in the local selective detection of living cells because of its high spatial–temporal resolution and sensitivity, as well as its ability to obtain comprehensive cellular physiological states and processes.

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Highly sensitive detection of hesperidin using AuNPs/rGO modified glassy carbon electrode

The Analyst ◽

10.1039/c7an01706e ◽

2018 ◽

Vol 143 (1) ◽

pp. 297-303 ◽

Cited By ~ 9

Author(s):

Yang Gao ◽

Xiufeng Wu ◽

Hui Wang ◽

Wenbo Lu ◽

Mandong Guo

Keyword(s):

Gold Nanoparticles ◽

Graphene Oxide ◽

Electrochemical Sensor ◽

Glassy Carbon Electrode ◽

Glassy Carbon ◽

Carbon Electrode ◽

Modified Glassy Carbon Electrode ◽

Reduced Graphene ◽

Highly Sensitive ◽

Highly Sensitive Detection

The highly sensitive and selective electrochemical sensor of hesperidin based on gold nanoparticles (AuNPs) and reduced graphene oxide (rGO) modified glassy carbon electrode (GCE) is reported.

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