Aptamer-based thin film gold electrode modified with gold nanoparticles and carboxylated multi-walled carbon nanotubes for detecting oxytetracycline in chicken samples

He, Baoshan; Wang, Long; Dong, Xiaoze; Yan, Xiaohai; Li, Ming; Yan, Sasa; Yan, Dandan

doi:10.1016/j.foodchem.2019.125179

Cited by 49 publications

(16 citation statements)

References 33 publications

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“…5,6 Electrochemical aptamer-based (E-AB) sensors, for example, are a versatile platform supporting the detection of a broad range of targets irrespective of their chemical or enzymatic reactivity and thus including inorganic ions, proteins, small molecules and cells. [7][8][9][10][11][12][13][14] E-AB sensors are composed of a DNA/RNA or peptide aptamer "probe" that serves as a recognition element, and a covalently attached redox reporter which provides the readout signal. Upon undergoing a binding-induced conformational change, the electron transfer rate of the redox reporter is altered, thus providing an easily measurable electrochemical signal that is monotonically related to target concentration.…”

Section: Introductionmentioning

confidence: 99%

A wrinkled structure of gold film greatly improves the signaling of electrochemical aptamer-based biosensors

Lin

Chang

et al. 2021

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

A wrinkled structure of gold film greatly improves the signaling of electrochemical aptamer-based biosensors

Lin

Chang

et al. 2021

RSC Adv.

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“…He [166] developed a disposable and portable aptasensor for the fast and sensitive detection of oxytetracycline using gold nanoparticles (AuNPs)/carboxylated multi-walled carbon nanotubes (cMWCNTs)@thionine connecting complementary strand of aptamer (cDNA) as signal tags. The substrate electrode of the aptasensor was a portable thin film gold electrode (TFGE).…”

Section: Antibioticsmentioning

confidence: 99%

Electrochemical Biosensors in Food Safety: Challenges and Perspectives

Curulli

2021

Preprint

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Safety and quality are key issues for the food industry. Consequently, there is a 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 time of analyses, expensive and complex procedures, and they require skilled personnel. Therefore, the development of performant electrochemical biosensors can significantly support the screening of food chain and products. Here, we report some of the recent developments in this area and analyze the contributions produced by electrochemical biosensors in the food screening and the challenges to address.

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“…Chen et al synthesized a CuO NPs@MWCNTs nanocomposite (Chen et al, 2019 ). AuNPs have also been introduced to anchor on MWCNTs, not only providing a large number of biological binding sites but also effectively improving the electron transfer rate (He et al, 2019 ).…”

Section: Ld Nanomaterial-based Sensors For Antibiotics Detectionmentioning

confidence: 99%

Low-Dimension Nanomaterial-Based Sensing Matrices for Antibiotics Detection: A Mini Review

Dong

Wang

2020

Front. Chem.

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Antibiotics, a kind of secondary metabolite with antipathogen effects as well as other properties, are produced by microorganisms (including bacterium, fungi, and actinomyces) or higher animals and plants during their lives. Furthermore, as a chemical, an antibiotic can disturb the developmental functions of other living cells. Moreover, it is impossible to avoid its pervasion into all kinds of environmental media via all kinds of methods, and it thus correspondingly becomes a trigger for environmental risks. As described above, antibiotics are presently deemed as a new type of pollution, with their content in media (for example, water, or food) as the focus. Due to their special qualities, nanomaterials, the most promising sensing material, can be adopted to produce sensors with extraordinary detection performance and good stability that can be applied to detection in complicated materials. For low-dimensional (LD) nanomaterials, the quantum size effect, and dielectric confinement effect are particularly strong. Therefore, they are most commonly applied in the detection of antibiotics. This article focuses on the influence of LD nanomaterials on antibiotics detection, summarizes the application of LD nanomaterials in antibiotics detection and the theorem of sensors in all kinds of antibiotics detection, illustrates the approaches to optimizing the sensitivity of sensors, such as mixture and modification, and also discusses the trend of the application of LD nanomaterials in antibiotics detection.

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Aptamer-based thin film gold electrode modified with gold nanoparticles and carboxylated multi-walled carbon nanotubes for detecting oxytetracycline in chicken samples

Cited by 49 publications

References 33 publications

A wrinkled structure of gold film greatly improves the signaling of electrochemical aptamer-based biosensors

A wrinkled structure of gold film greatly improves the signaling of electrochemical aptamer-based biosensors

Electrochemical Biosensors in Food Safety: Challenges and Perspectives

Low-Dimension Nanomaterial-Based Sensing Matrices for Antibiotics Detection: A Mini Review

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