Ultra-sensitive detection of malathion using quantum dots-polymer based fluorescence aptasensor

Bala, Rajni; Swami, Anuradha; Tabujew, Ilja; Peneva, Kalina; Wangoo, Nishima; Sharma, Rohit K.

doi:10.1016/j.bios.2017.12.034

Cited by 82 publications

(28 citation statements)

References 32 publications

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“…In biosensors, the signal output can be performed by introducing molecules with fluorescent properties. In 2018, Wangoo and Sharma’s team and Lu’s team achieved rapid marathon and isocarbophos (ICP) detection using different adapters ( Bala et al, 2018 ; Li et al, 2018 ). Using similar strategies, that is, before and after adding the measured target, changes in the aptamer conformation caused differences in the number of free nucleic acid single-strands in the system.…”

Section: Aptamer-based Recognition Of Pesticide Compoundsmentioning

confidence: 99%

Multiple Recognition-Based Sensor for Pesticide Residues

Chen

Zhu

et al. 2022

Front. Chem.

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The use of pesticides is gradually increasing to improve the yield and quality of crops. However, excessive pesticide use has led to a dramatic pollution increase in the environment and agricultural products, posing severe human health risks. Therefore, rapid, sensitive pesticide detection is essential. Various pesticides detection methods and products have been developed in recent years. This brief review summarized the point-of-care testing (POCT) detection of pesticides based on multiple recognition, including protein-, aptamer-, nanomaterial-, and macrocycle-based recognition. The review aimed to address the growing demands for regulating and destroying pesticides or other adverse agriculture-related applications in the real world.

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Section: Aptamer-based Recognition Of Pesticide Compoundsmentioning

confidence: 99%

Multiple Recognition-Based Sensor for Pesticide Residues

Chen

Zhu

et al. 2022

Front. Chem.

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“…These enzyme-based biosensor for pesticides residue detection has shown very sensitive measurement range which able to detect 10 −10 M [1], but they need loner incubation time and they show poor specificity due to the short lifetime of the enzymes and due to the interference from many other substances such as heavy metals and other type of pesticides, etc. Furthermore, the enzyme-linked immunosorbent assay (ELISA) method is highly sensitive and has demonstrated good specificity, however, it requires labelling of the molecules, which is difficult for small molecules such as the pesticides residue however, the OPs are small molecules in the level of hundreds of Daltons, thus the labelling process might affect detection sensitivity [5], [62].…”

Section: Classification Of Biosensors For Chemicals and Pesticidmentioning

confidence: 99%

Recent Progress in the Development of Biosensors for Chemicals and Pesticides Detection

et al. 2020

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Chemicals and pesticides contamination in the food, drinking water, and environment ecosystem have become one of the most serious problems for human public health in the world due to their large amount used and wide application in the agriculture industry. Therefore, the detection and analysis of contamination in the food and drinking water by using techniques that are simple and suitable for fast screening are important. This review gives an overview of the last trends and recent advances biosensors for chemicals and pesticides detection based on electrochemical, optical and mechanical transducers strategies. Furthermore, the biosensors are classified according to their immobilized biorecognition elements including aptamer, antibodies, enzymes, and molecularly imprinted polymers. The implementation of nanomaterials such as graphene, carbon nanotubes, and metals nanoparticles are also emphasized and discussed in this review, these nanomaterials provides remarkable features to the biosensors such highly sensitive and accurate which allowing efficient pesticides detection. In addition to highlighting and summarizing various novel sensors, this review also provided some drawbacks, challenging, prospects as well as the current efforts to enhanced optical sensors. INDEX TERMS Biosensors, chemical detection, electrochemical transducer, mechanical transducer, optical transducer, pesticides detection.

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“…[77][78][79] For example, Bala et al developed a novel detection platform for malathion using CdTe@CdS QDs. 77 The designed nanoprobe was comprised of the QDs, poly(N-(3-guanidinopropyl)methacrylamide) homopolymer (PGPMA) and the malathion-specific aptamer. In the absence of malathion, the cationic polymer interacted with the aptamer via electrostatic interactions, leaving the fluorescence of QDs unaffected.…”

Section: Fluorescent Nanomaterialsmentioning

confidence: 99%

“…In addition, biological samples are often overwhelmed with interferences that could nonspecifically adsorb to the QDs. To overcome these issues, the surface properties of QDs have been improved to possess high aqueous solubility, high stability, and reduced nonspecific binding through several surface modifications, such as coating with oxides, organosilica, or polymers. − For example, Bala et al. developed a novel detection platform for malathion using CdTe@CdS QDs .…”

Section: Signaling Unitsmentioning

confidence: 99%