A nanotechnological approach to biosensors sensitivity improvement: application to organophosphorus pesticides determination

Stoytcheva, Margarita; Zlatev, Roumen; Montero, Gisela; Velkova, Zdravka; Gochev, Velizar

doi:10.1080/13102818.2017.1389618

Cited by 15 publications

(7 citation statements)

References 39 publications

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“…Stoytcheva et al. (2017) reported an electrochemical OPH‐based sensor for paraoxon quantification. The biosensing platform was constructed by one‐step electrodeposition of the nanocomposite (CS‐cMWCNT‐ hydroxyapatite (HA/OPH) of chitosan, nanotube (CNTs), HA, and OPH onto the surface of electrode.…”

Section: Detection Mechanisms For Analytesmentioning

confidence: 99%

Recent advances in nanomaterial‐assisted electrochemical sensors for food safety analysis

Ren

et al. 2022

Food Frontiers

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Food safety as a public health issue has aroused worldwide concern. Food safety risks caused by the existence of food safety hazards in food may occur in all stages of the food supply chain. Thus, great emphasis is placed on sensitive, selective, and convenient analytical methods of various food safety hazards in food. At present, nanomaterials are at the forefront of various electrochemical sensing applications. Given their unique physical, chemical, and biological characteristics, nanomaterials are considered perfect candidates for the design of electrode surface to construct electrochemical sensors with excellent analytical performance. With the assistance of nanomaterials, electrochemical sensors are a potential alternative to conventional methods of food safety analysis. This review focuses on current research achievements of nanomaterial‐assisted electrochemical sensors for food safety analysis reported in recent 5 years. It highlights the different detection mechanisms for analytes, flexible sensing strategies based on nanomaterials, and portable miniaturized electrochemical devices. Finally, the challenges and limitations in the design of electrochemical sensors for food safety analysis are also discussed.

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Section: Detection Mechanisms For Analytesmentioning

confidence: 99%

Recent advances in nanomaterial‐assisted electrochemical sensors for food safety analysis

Ren

et al. 2022

Food Frontiers

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“…As explained in section , the biosensing method involves the use of biorecognition elements to increase the selectivity of the MOFs for target-specific applications. , Although biosensing approaches do not offer the trace-level analysis observed with GC/HPLC analysis, they enable in situ analysis, which gives them a distinct advantage over other techniques. , As our understanding of bioconjugation approaches has increased, numerous biosensing techniques employing various types of NMs such as metal NPs, carbon-based NMs, and semiconductor NPs (e.g., QDs) have been extensively reported for pesticide detection. − …”

Section: Use Of Mof-based Sensors For Pesticidesmentioning

confidence: 99%

Potential Utility of Metal–Organic Framework-Based Platform for Sensing Pesticides

Vikrant

Tsang

Raza

et al. 2018

ACS Appl. Mater. Interfaces

186

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The progress in modern agricultural practices could not have been realized without the large-scale contribution of assorted pesticides (e.g., organophosphates and nonorganophosphates). Precise tracking of these chemicals has become very important for safeguarding the environment and food resources owing to their very high toxicity. Hence, the development of sensitive and convenient sensors for the on-site detection of pesticides is imperative to overcome practical limitations encountered in conventional methodologies, which require skilled manpower at the expense of high cost and low portability. In this regard, the role of novel, advanced functional materials such as metal-organic frameworks (MOFs) has drawn great interest as an alternative for conventional sensory systems because of their numerous advantages over other nanomaterials. This review was organized to address the recent advances in applications of MOFs for sensing various pesticides because of their tailorable optical and electrical characteristics. It also provides in-depth comparison of the performance of MOFs with other nanomaterial sensing platforms. Further, we discuss the present challenges (e.g., potential bias due to instability under certain conditions, variations in the diffusion rate of the pesticide, chemical interferences, and the precise measurement of luminesce quenching) in developing robust and sensitive sensors by using tailored porosity, functionalities, and better framework stability.

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“…Biosensors were developed to detect and determine organophosphorus (OP) pesticides as well. For instance, Stoytcheva et al (2018) prepared a device based on OP hydrolase immobilization on a chitosan-carbon-nanoparticles-hydroxyapatite nanocomposite. A nanocomposite immunosensor to monitor the OP compound, chlorpyriphos, is based on immobilized anti-chloropyriphos monoclonal antibody on multi-walled carbon nanotubes-chitosan-thionine (as electronic mediator) (Sun et al 2012b).…”

Section: Biosensorsmentioning

confidence: 99%

Chitin/Chitosan: Versatile Ecological, Industrial, and Biomedical Applications

Merzendorfer

Cohen

2019

Biologically-Inspired Systems

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Chitin is a linear polysaccharide of N-acetylglucosamine, which is highly abundant in nature and mainly produced by marine crustaceans. Chitosan is obtained by hydrolytic deacetylation. Both polysaccharides are renewable resources, simply and cost-effectively extracted from waste material of fish industry, mainly crab and shrimp shells. Research over the past five decades has revealed that chitosan, in particular, possesses unique and useful characteristics such as chemical versatility, polyelectrolyte properties, gel-and film-forming ability, high adsorption capacity, antimicrobial and antioxidative properties, low toxicity, and biocompatibility and biodegradability features. A plethora of chemical chitosan derivatives have been synthesized yielding improved materials with suggested or effective applications in water treatment, biosensor engineering, agriculture, food processing and storage, textile additives, cosmetics fabrication, and in veterinary and human medicine. The number of studies in this research field has exploded particularly during the last two decades. Here, we review recent advances in utilizing chitosan and chitosan derivatives in different technical, agricultural, and biomedical fields.

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A nanotechnological approach to biosensors sensitivity improvement: application to organophosphorus pesticides determination

Cited by 15 publications

References 39 publications

Recent advances in nanomaterial‐assisted electrochemical sensors for food safety analysis

Recent advances in nanomaterial‐assisted electrochemical sensors for food safety analysis

Potential Utility of Metal–Organic Framework-Based Platform for Sensing Pesticides

Chitin/Chitosan: Versatile Ecological, Industrial, and Biomedical Applications

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