Electrochemical biosensor for pesticides based on acetylcholinesterase immobilized on polyaniline deposited on vertically assembled carbon nanotubes wrapped with ssDNA

Subramanian, Venkataraman; Radecka, Hanna; Radecki, Jerzy

doi:10.1016/j.bios.2009.01.044

Cited by 265 publications

(105 citation statements)

References 38 publications

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“…Different articles described procedures for alignment of CNTs; these reports showed that the detectors/sensors integrating aligned CNTs exhibit fast electronic transfer, electrocatalysis, and high sensitivity in electrochemical assays. 22,23 This communication describes a rapid, simple, portable, direct, and ultrasensitive approach to electrochemical determination of serotonin in a glass/PDMS microfluidic device with vertically aligned SWCNTs. Serotonin is the major neurotransmitter in the brain and alterations of its levels in humans can be related to some diseases such as Alzheimer's, infantile autism, sleeping disorders, depression, and bulimia.…”

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confidence: 99%

Glass/PDMS hybrid microfluidic device integrating vertically aligned SWCNTs to ultrasensitive electrochemical determinations

et al. 2012

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This communication reports a promising platform for rapid, simple, direct, and ultrasensitive determination of serotonin. The method is related to integration of vertically aligned singlewalled carbon nanotubes (SWCNTs) in electrochemical microfluidic devices. The required microfabrication protocol is simple and fast. In addition, the nanomaterial influenced remarkably the obtained limit-of-detection (LOD) values. Our system achieved a LOD of 0.2 nmol L 21 for serotonin, to the best of our knowledge one of the lowest values reported in the literature.Glass/elastomer hybrid microfluidic platforms with integrated electrochemical detectors are powerful analytical tools. Their main advantages include: (i) low cost; (ii) chemical inertia; (iii) optical transparency; (iv) thermal, mechanical, and chemical stability; (v) automation capacity, and; (vi) easy microfabrication. In addition, they offer high values of reproducibility and sensitivity.

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confidence: 99%

Glass/PDMS hybrid microfluidic device integrating vertically aligned SWCNTs to ultrasensitive electrochemical determinations

et al. 2012

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“…Hazırlanan biyosensör nehir suyuna metilparatiyon ve klorprifos katkı yapılarak, bu pestisitlerin tayinini yapmak üzere kullanılmıştır. Metilparatiyon ve klorprifos için 1.0×10 -12 M olarak bulunan tespit sınırları Avrupa Çevresel Şubesi ve diğer çevre koruma örgütleri tarafından tavsiye edilen maksimum kirlilik seviyesinin de altındadır [35].…”

Section: İletken Poli̇merlerunclassified

Pestisit Analizlerinde Asetilkolinesteraz İnhibisyonuna Dayalı İletken Polimer Esaslı Biyosensörler

Gürsoy¹,

Gürsoy²

2017

Akademik Gıda

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Acetylcholinesterase Inhibition Based Biosensors Developed by Using Conducting Polymers for Pesticide Analyses ABSTRACTPesticides commonly used worldwide are chemicals used as agricultural, industrial, domestic and war materials. Although pesticides are very strongly associated with many health problems, there is a serious lack of monitoring and identification of these pollutants. Conventional chromatographic methods such as high performance liquid chromatography, capillary electrophoresis and mass spectrometry are effective methods for pesticide analysis in foods. However, these methods have considerable limitations in terms of complex processes, time-consuming preparatory steps, expensive equipment and expert staff requirements. Biosensors are preferred devices for the determination of pesticides because of their simplicity, high sensitivity, short analysis time and low analysis cost, as well as their applicability to real time measurements. For more than fifteen years, biosensors based on enzyme inhibition have been developed to monitor pesticide residues for food control and safety. Conductive polymers have been used during constructions of these pesticide biosensors. In this study, studies on biosensors used for pesticide analyses were summarized and then researches on acetylcholinesterase inhibition based biosensors developed by using conducting polymers for pesticide analyses were reviewed. .

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“…The ZrO 2 NPs showed a strong affinity toward the phosphate group on parathion molecules, which provides sensitivity and selectivity of the sensing film with the detection limit of 3 µg/dm 3 for standard samples. An electrochemical biosensor for determination of pesticides methylparathion and chlorpyrifos based on AChE immobilized on polyaniline deposited on vertically assembled carbon nanotubes wrapped with ssDNA was prepared by Viswanathan et al [315]. The pesticides were determined through inhibition of enzyme reaction AChE-acetylcholine that causes small changes of local pH in the vicinity of an electrode surface and the detection limit of the biosensor for both pesticides was found to be 1·10 -12 mol/dm 3 .…”

Section: Biosensorsmentioning

confidence: 99%

Application Of Nanotechnology In Agriculture And Food Industry, Its Prospects And Risks

Jampílek

Kráľová

2015

Ecological Chemistry and Engineering S

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Nanoagrochemicals, such as nanopesticides, nanofertilizers or plant growth stimulating nanosystems, were primarily designed to increase solubility, enhance bioavailability, targeted delivery, controlled release and/or protection against degradation resulting in the reduced amount of applied active ingredients and finally in a decrease of dose-dependent toxicity/burden. This paper is a comprehensive up-to-date review related to the preparation and the biological activity of nanoformulations enabling gradual release of active ingredient into weeds and the body of pests and controlled release of nutrients to plants. The attention is also devoted to the decrease of direct environmental burden and economic benefits due to application of nanoformulations, where less amount of active ingredient is needed to achieve the same biological effect in comparison with bulk. The application of nanotechnology in the areas such as food packaging, food security, encapsulation of nutrients and development of new functional products is analysed. The use of nanoparticles in biosensors for detection of pathogens and contaminants as well as in DNA and gene delivery is discussed as well. Benefits and health risks of nanoagrochemicals are highlighted, and special attention is given to nanoecotoxicology and guidelines and regulatory documents related to the use of nanoformulations in agriculture and food industry.

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Electrochemical biosensor for pesticides based on acetylcholinesterase immobilized on polyaniline deposited on vertically assembled carbon nanotubes wrapped with ssDNA

Cited by 265 publications

References 38 publications

Glass/PDMS hybrid microfluidic device integrating vertically aligned SWCNTs to ultrasensitive electrochemical determinations

Glass/PDMS hybrid microfluidic device integrating vertically aligned SWCNTs to ultrasensitive electrochemical determinations

Pestisit Analizlerinde Asetilkolinesteraz İnhibisyonuna Dayalı İletken Polimer Esaslı Biyosensörler

Application Of Nanotechnology In Agriculture And Food Industry, Its Prospects And Risks

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