Quantum Dots Applied to Methodology on Detection of Pesticide and Veterinary Drug Residues

Zhou, Jiawei; Zou, Xue‐Mei; Song, Shang-Hong; Chen, Guanhua

doi:10.1021/acs.jafc.7b05119

Cited by 112 publications

(56 citation statements)

References 105 publications

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“…CDs derived from other precursors [2,10,18,68,69]. Furthermore, analytical performance of the proposed method has been compared with some typical sensing methods for mentioned pesticides in Table 1.…”

Section: Plos Onementioning

confidence: 99%

Ultrasensitive fluorescent detection of pesticides in real sample by using green carbon dots

et al. 2020

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Pesticides, widely used in modern agriculture, could potentially cause environmental pollution and affect human lives. Hence, the development of a highly sensitive sensing element to detect pesticide residues is crucial for food safety and ecosystem protection. Optical methods based on fluorescence properties provide an ideal approach for screening and quantification of these compounds in different medias including water, plant, and nutritional products. The development of fluorescence emitting carbon dot-based sensors for monitoring pesticides has attracted great attention in recent years. In comparison to other fluorophores, carbon dots have more promising optical features, higher quantum yields and better biocompatibility. This article aims to present a novel fluorescent sensing method of diazinon, glyphosate, and amicarbazone using plant-based carbon dots. A comprehensive characterization of carbon dots obtained from cauliflower was performed by methods including UV-visible, FTIR spectroscopy, fluorometry, AFM, DLS, and zeta sizer. Following this step, carbon dots were used to detect pesticides. The fluorescence quenching property of carbon dots has been utilized to identify detection limit of 0.25, 0.5, and 2 ng ml-1 for diazinon, amicarbazone, and glyphosate, respectively. Also, real sample study revealed that the detection of pesticides accompanied by our developed nano-sensor is repeatable and accurate. According to carbon dots specificity determination, the prepared nano sensor does not have the potential to identify "bromacil" and "dialen super" pesticides but the other three mentioned pesticides are detectable. The results confirm that synthesized green carbon dots are well qualified for application in food safety and environmental monitoring.

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Section: Plos Onementioning

confidence: 99%

Ultrasensitive fluorescent detection of pesticides in real sample by using green carbon dots

et al. 2020

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“…Stanisavljevic et al (2015) presented QDs as the new fluorophores because of their interesting optical properties (e.g., higher fluorescence, photostability, multicolor QDs) [116]. QDs have been used directly or in conjugation with a biosensing element (i.e., aptamer) for the detection of pesticides and veterinary drug residues [117]. QDs have been used several times as quenchers in FRET-based aptasensors for the detection of antimicrobial residues in food products [83,86,87].…”

Section: Figurementioning

confidence: 99%

The Growing Interest in Development of Innovative Optical Aptasensors for the Detection of Antimicrobial Residues in Food Products

Gaudin¹

2020

Biosensors

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The presence of antimicrobial residues in food-producing animals can lead to harmful effects on the consumer (e.g., allergies, antimicrobial resistance, toxicological effects) and cause issues in food transformation (i.e., cheese, yogurts production). Therefore, to control antimicrobial residues in food products of animal origin, screening methods are of utmost importance. Microbiological and immunological methods (e.g., ELISA, dipsticks) are conventional screening methods. Biosensors are an innovative solution for the development of more performant screening methods. Among the different kinds of biosensing elements (e.g., antibodies, aptamers, molecularly imprinted polymers (MIP), enzymes), aptamers for targeting antimicrobial residues are in continuous development since 2000. Therefore, this review has highlighted recent advances in the development of aptasensors, which present multiple advantages over immunosensors. Most of the aptasensors described in the literature for the detection of antimicrobial residues in animal-derived food products are either optical or electrochemical sensors. In this review, I have focused on optical aptasensors and showed how nanotechnologies (nanomaterials, micro/nanofluidics, and signal amplification techniques) largely contribute to the improvement of their performance (sensitivity, specificity, miniaturization, portability). Finally, I have explored different techniques to develop multiplex screening methods. Multiplex screening methods are necessary for the wide spectrum detection of antimicrobials authorized for animal treatment (i.e., having maximum residue limits).

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Section: Introductionmentioning

confidence: 99%

“…Rapid detection of metabolites such as natural toxins and chemical residues such as pesticides and veterinary drugs in food plants and animals is required to monitor food quality and safety. [1][2][3] The presence of risk compounds can reach food at any moment in production and processing of food plants and animals due to the use of pesticides and veterinary drugs. In addition, metabolites including natural toxins in food plants, eg, toxic chaconine and solanine are produced in eggplant, potato, and tomato, are also highly needed to be concerned.…”

Section: Introductionmentioning

confidence: 99%

Electrostatic field–induced tip‐electrospray ionization mass spectrometry for direct analysis of raw food materials

Wen

2018

J Mass Spectrom

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Rapid characterization of metabolites and risk compounds such as chemical residues and natural toxins in raw food materials such as vegetables, meats, and edible living plants and animals plays an important part in ensuing food quality and safety. To rapidly characterize the analytes in raw food materials, it is essential to develop in situ method for directly analyzing raw food materials. In this work, raw food materials including biological tissues and living samples were placed between an electrode and mass spectrometric (MS) inlet under a strong electrostatic field; analytes were rapidly induced to generate electrospray ionization (ESI) from the sample tip by adding a drop of solvent onto the sample. Therefore, the electrostatic field–induced tip‐ESI‐MS allows raw samples to avoid contacting high voltage, and thus this method has the advantage for in vivo analysis of food living plants and animals. Metabolite profiling, residues of pesticides and veterinary drugs, and natural toxins from raw food materials have been successfully detected. The analytical performances, including the linear ranges, sensitivity, and reproducibility, were investigated for direct sample analysis. The ionization mechanism of electrostatic field–induced tip‐ESI was also discussed in this work.

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Quantum Dots Applied to Methodology on Detection of Pesticide and Veterinary Drug Residues

Cited by 112 publications

References 105 publications

Ultrasensitive fluorescent detection of pesticides in real sample by using green carbon dots

Ultrasensitive fluorescent detection of pesticides in real sample by using green carbon dots

The Growing Interest in Development of Innovative Optical Aptasensors for the Detection of Antimicrobial Residues in Food Products

Electrostatic field–induced tip‐electrospray ionization mass spectrometry for direct analysis of raw food materials

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