Multicolor visual screening of total dithiocarbamate pesticides in foods based on sulfydryl-mediated growth of gold nanobipyramids

Wang, Zongwen; Yang, Lan; Ye, Xingyan; Huang, Chaolong; Yang, Wanhong; Zhang, Liaoyuan; Wu, Zujian; Fu, FengFu

doi:10.1016/j.aca.2020.09.032

Cited by 28 publications

(6 citation statements)

References 31 publications

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“…Pesticides made from dithiocarbamates are used as fungicides for various crops during processes such as shipment, storage and growth [81]. The structures of some of these dithiocarbamate-based pesticides are shown in Figure 7.…”

Section: Application Of Dithiocarbamate Compounds As Pesticidesmentioning

confidence: 99%

The Versatility in the Applications of Dithiocarbamates

Ajiboye

Marzouki

Onwudiwe

2022

IJMS

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Dithiocarbamate ligands have the ability to form stable complexes with transition metals, and this chelating ability has been utilized in numerous applications. The complexes have also been used to synthesize other useful compounds. Here, the up-to-date applications of dithiocarbamate ligands and complexes are extensively discussed. Some of these are their use as enzyme inhibitor and treatment of HIV and other diseases. The application as anticancer, antimicrobial, medical imaging and anti-inflammatory agents is examined. Moreover, the application in the industry as vulcanization accelerator, froth flotation collector, antifouling, coatings, lubricant additives and sensors is discussed. The various ways in which they have been employed in synthesis of other compounds are highlighted. Finally, the agricultural uses and remediation of heavy metals via dithiocarbamate compounds are comprehensively discussed.

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Section: Application Of Dithiocarbamate Compounds As Pesticidesmentioning

confidence: 99%

The Versatility in the Applications of Dithiocarbamates

Ajiboye

Marzouki

Onwudiwe

2022

IJMS

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“…As a contact fungicide, dithiocarbamate compound (DTC) is effective against more than 400 pathogens and widely used in more than 70 crops, such as vegetables, fruits, etc. However, the introduction of such pesticide into the environment, it's physical, chemical and biological processes can transformed into harmful substance and cause disease (Wang et al 2020). Mancozeb is a common dithiocarbamate insecticide, it's metabolite is ethylene thiourea (ETU), which has been classi ed as a Category III carcinogen by the International Agency for Research on Cancer.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Versatile Fe3O4/GO/Au Composite Nanomaterial as SERS-active Substrate for Detection of Pesticide Residue

Wu,

Song,

Tian

2024

Preprint

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Highly active Fe3O4/GO/Au composite nanomaterial was fabricated as substrate of surface enhanced Raman spectroscopy (SERS) and applied for pesticide residue detection. The three-layer of multifunctional Fe3O4/GO/Au nanoparticles(NPs) was designed by facile method, with high hot spots, and was characterized by various techniques, including Ultraviolet spectrophotometry(UV), X-ray diffraction (XRD), infrared absorption spectrometer(IR), and transmission electron microscopy(TEM). The performance of Fe3O4/GO/Au was evaluated by Raman spectroscopy with R6G as probe molecule to verify its enhancement effect. It exhibited strong Raman signal with 10− 6M of R6G. Furthermore, the presence of Fe3O4/GO/Au nanohybrid enabled the SERS-based method to detect mancozeb, and showed a excellent linear relationship in the range of 0.25-25 ppm. Therefore, the proposed SERS approach holds promise as an auxiliary technique for screening contaminated agricultural products, environment sample and food in the future.

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“…Distinctively from other nanostructures, Au nanobipyramids (Au NBPs) with two sharp apexes possess significantly enhanced localized electromagnetic fields and narrower plasma linear widths as well as higher refraction indexes; the aspect ratio of Au NBPs is more easily changed during growing or etching. Due to the improvement in the Au NBPs synthesis strategy in terms of the high homogeneity and yield, the applications in highly sensitive visual detection have been gradually explored [ 24 , 25 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Multicolor Visual Detection of Deoxynivalenol in Grain Based on Magnetic Immunoassay and Enzymatic Etching of Plasmonic Gold Nanobipyramids

Guo

Chen

et al. 2023

Toxins

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In this study, a multicolor visual method based on a magnetic immunoassay and enzyme-induced gold nanobipyramids (Au NBPs) etching was developed for deoxynivalenol (DON) detection. The magnetic beads modified with high affinity DON monoclonal antibodies were used as a carrier for target enrichment and signal transformation and the Au NBPs with excellent plasmonic optical properties were served as enzymatic etching substrates. The oxidation state TMB, which was generated through catalysis of horseradish peroxidase (HRP), induced the etching of plasmonic Au NBPs, resulting in the longitudinal peak blue-shift of local surface plasmon resonance (LSPR). Correspondingly, Au NBPs with various aspect ratios displayed a variety of individual colors which were visualized by the naked eye. The LSPR peak shift was linearly related to the DON concentration in the range of 0~2000 ng/mL and the detection limit was 57.93 ng/mL. The recovery for naturally contaminated wheat and maize at different concentrations ranged from 93.7% to 105.7% with a good relative standard deviation below 11.8%. Through observing the color change in Au NBPs, samples with overproof DON could be screened preliminarily by the naked eye. The proposed method has the potential to be applied in on-site rapid screening of mycotoxins in grain. In addition, the current multicolor visual method only used for the simultaneous detection of multiple mycotoxins is in urgent need of a breakthrough to overcome the limitation of single mycotoxin detection.

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Multicolor visual screening of total dithiocarbamate pesticides in foods based on sulfydryl-mediated growth of gold nanobipyramids

Cited by 28 publications

References 31 publications

The Versatility in the Applications of Dithiocarbamates

The Versatility in the Applications of Dithiocarbamates

Fabrication of Versatile Fe3O4/GO/Au Composite Nanomaterial as SERS-active Substrate for Detection of Pesticide Residue

Multicolor Visual Detection of Deoxynivalenol in Grain Based on Magnetic Immunoassay and Enzymatic Etching of Plasmonic Gold Nanobipyramids

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