Biosensor based on atemoya peroxidase immobilised on modified nanoclay for glyphosate biomonitoring

Oliveira, Grasielli C. de; Moccelini, Sally Katiuce; Castilho, Marilza; Terezo, Ailton José; Possavatz, Juliana; Magalhães, Mauro Taveira; Dores, Eliana Freire Gaspar de Carvalho

doi:10.1016/j.talanta.2012.06.059

Cited by 59 publications

(16 citation statements)

References 31 publications

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“…The optimization studies were necessary to explicitly determine the dependence of various experimental parameters like concentration, scan rate, pH, pulse amplitude etc. to establish the best experimental working condition [12,13,[30][31][32].…”

Section: Resultsmentioning

confidence: 99%

Biocompatible laponite ionogels based non-enzymatic oxalic acid sensor

Joshi

Rawat

Solanki

et al. 2015

Sensing and Bio-Sensing Research

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a b s t r a c tAn enzyme-free oxalic acid (OA) electrochemical sensor was assembled on indium tin oxide (ITO) plate on which a film of laponite ionogel was coated that resulted in an L/IL/ITO electrode. This ionogel electrode was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and UV-Vis spectroscopy techniques. Electrochemical oxidation of OA on the electrode surface was investigated by cyclic voltammetry. Further this electrode exhibited high electrochemical activity that yielded well-defined peaks of OA oxidation, and a notably suppressed over-potential compared to the laponite-ITO (L/ITO) electrode. Under optimized conditions, a good linear response (anodic current) was observed for the OA concentration in the 1-20 mM range with a detection limit of 3 lM.Furthermore, this electrochemical strip sensor presented good characteristics in terms of stability, and reproducibility offering promise of applicability of this green sensor platform.

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Section: Resultsmentioning

confidence: 99%

Biocompatible laponite ionogels based non-enzymatic oxalic acid sensor

Joshi

Rawat

Solanki

et al. 2015

Sensing and Bio-Sensing Research

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“…The average recovery of glyphosate from spiked water samples ranged from 94.9% to 108.9%. The biosensor remained stable for a period of eight weeks" [107].…”

Section: Glyphosatementioning

confidence: 98%

Electrochemical Biosensors for the Determination of Toxic Substances Related to Food Safety Developed in South America: Mycotoxins and Herbicides

et al. 2017

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The goal of achieving food safety and quality has become increasingly important in relevant areas. The achievement of this objective includes a significant effort in different areas related to the production of raw materials, storage, transportation, etc. One of the central areas in the verification of food safety and food quality control is related to the analysis of food components and, in particular, possible toxic substances that they may contain. Therefore, the demand for appropriate methods for the determination of these substances is increasingly demanding. Thus, not only is accuracy and precision sought in the results of the analysis, but also the speed, simplicity and lowering of costs. In this way, electrochemical techniques and, particularly, electrochemical biosensors have emerged in recent times as good candidates to satisfy such requirements. This review summarizes the advances made in research and development centers located in South American countries related to the development of electrochemical biosensors for the determination of toxic substances present in foods, particularly mycotoxins and herbicides.

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“…Its popularity is due to the fact that it is a broad-spectrum, non-selective herbicide, that, unfortunately, was used in excessive amounts for the majority of crops just before harvest [ 105 ], currently being the world’s most extensively used weed killer [ 106 ]. In the literature numerous methods for the detection of this pesticide are described, including biosensors based on the principle of peroxidase inhibition [ 86 , 87 ].…”

Section: Other Enzymesmentioning

confidence: 99%

Advances in Enzyme-Based Biosensors for Pesticide Detection

et al. 2018

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The intensive use of toxic and remanent pesticides in agriculture has prompted research into novel performant, yet cost-effective and fast analytical tools to control the pesticide residue levels in the environment and food. In this context, biosensors based on enzyme inhibition have been proposed as adequate analytical devices with the added advantage of using the toxicity of pesticides for detection purposes, being more “biologically relevant” than standard chromatographic methods. This review proposes an overview of recent advances in the development of biosensors exploiting the inhibition of cholinesterases, photosynthetic system II, alkaline phosphatase, cytochrome P450A1, peroxidase, tyrosinase, laccase, urease, and aldehyde dehydrogenase. While various strategies have been employed to detect pesticides from different classes (organophosphates, carbamates, dithiocarbamates, triazines, phenylureas, diazines, or phenols), the number of practical applications and the variety of environmental and food samples tested remains limited. Recent advances focus on enhancing the sensitivity and selectivity by using nanomaterials in the sensor assembly and novel mutant enzymes in array-type sensor formats in combination with chemometric methods for data analysis. The progress in the development of solar cells enriched the possibilities for efficient wiring of photosynthetic enzymes on different surfaces, opening new avenues for development of biosensors for photosynthesis-inhibiting herbicides.

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Biosensor based on atemoya peroxidase immobilised on modified nanoclay for glyphosate biomonitoring

Cited by 59 publications

References 31 publications

Biocompatible laponite ionogels based non-enzymatic oxalic acid sensor

Biocompatible laponite ionogels based non-enzymatic oxalic acid sensor

Electrochemical Biosensors for the Determination of Toxic Substances Related to Food Safety Developed in South America: Mycotoxins and Herbicides

Advances in Enzyme-Based Biosensors for Pesticide Detection

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