Microdroplet-captured tapes for rapid sampling and SERS detection of food contaminants

He, Xuecheng; Yang, Shuhua; Xu, Tailin; Song, Yongchao; Zhang, Xueji

doi:10.1016/j.bios.2020.112013

Cited by 57 publications

(30 citation statements)

References 47 publications

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“…In the quest for improved signal uniformity and plasmonic activity, a number of approaches which combine several of the methods discussed above have been developed. 68,[114][115][116][117] For example, Jiang, Wei, et al developed a flexible polydimethylsiloxane (PDMS) substrate carrying a surface-layer of plasmonic tentacles for multiphase SERS analysis which included the detection of pesticide residues on food surfaces. 118 As shown in Figure 7A, the PDMS enhancing substrates were fabricated by a multistep procedure.…”

Section: In-situ Formation Of Plasmonic Nanoparticlesmentioning

confidence: 99%

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates

Huang

et al. 2021

J. Mater. Chem. C

138

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Section: In-situ Formation Of Plasmonic Nanoparticlesmentioning

confidence: 99%

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates

Huang

et al. 2021

J. Mater. Chem. C

138

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“…The linear equation was lgA = 5.08808 + 0.22795 × lgC (R 2 = 0.9969). On the basis of the judgment standard of the minimum detection limit [ 34 ], when the ratio of signal intensity (S) to noise intensity (N) of the tested sample is greater than or equal to 3, it is considered to be an effective signal. Therefore, the minimum detection limit of this method is 0.005 μg/mL.…”

Section: Resultsmentioning

confidence: 99%

Rapid and Sensitive Detection of Pentachloronitrobenzene by Surface-Enhanced Raman Spectroscopy Combined with Molecularly Imprinted Polymers

et al. 2022

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Molecularly imprinted polymers (MIPs) specifically targeting pentachloronitrobenzene (PCNB) and containing silver nanoparticles have been prepared by free radical polymerization reaction using methyl methacrylate (MMA) as a functional monomer, PCNB as a template molecule, 1,4-butanedioldimethacrylate as a cross linker, lauroyl peroxide (LPO) as an initiator, and the silver nanoparticles with the best surface-enhanced Raman scattering (SERS) effect as SERS enhancement materials. Our results indicated that MIPs specifically recognize PCNB from complex matrices. The intensity of the PCNB characteristic peak was proportional to the concentration, with a linear range of 0.005 to 0.15 μg/mL and a limit of detection of 5.0 ng/mL. The recovery rates and relative standard deviation for the detection of PCNB spiked in the rice samples were from 94.4% to 103.3% and from 4.6% to 7.4%, respectively. The experimental results are consistent with those by the GC-MS method, indicating that the rapid detection of PCNB in food matrices by SERS-MIPs is reliable. In view of the insolubility of PCNB in water, oil-soluble silver nanoparticles were synthesized which can be expanded to detect oil-soluble toxic substances. For the first time, the proposed method provides a point-of-care and cost-effective tool for rapidly detecting PCNB in food matrices with high sensitivity and selectivity by employing SERS-MIPs method.

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“…A microdroplet-captured tape SERS platform based on highly branched Au nanodendrites that promotes SERS activity was developed for successful screening of food contaminants (He, Yang, Xu, Song, & Zhang, 2020). The tape-based sensors were attached on a wearable glove, and analytes were collected from solutions through a simple "dip and pull" procedure, leading to an on-site identification of residual contaminants (Fig.…”

Section: Other Plasmonic Sensorsmentioning

confidence: 99%

Plasmonic biosensors for food control

Balbinot

Srivastav

Vidić

et al. 2021

Trends in Food Science & Technology

123

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Background: Food safety is becoming increasingly important because food industry must provide quality products to minimize the health risks. Traditional methods to assure food safety, such as plate count and polymerase chain reaction are accurate and robust but can hardly satisfy the needs of the food industry because they are costly and time consuming. Therefore, optical biosensors that can analyze food in a low-cost, facile, fast, sensitive, and selective manner started to emerge. Scope and approach: This review presents plasmonic biosensors including surface plasmon resonance (SPR), localized SPR (LSPR), fiber optic SPR (FO-SPR), surface enhanced Raman scattering (SERS), surface-enhanced fluorescence (SEF), and total internal reflection (TIR) based sensors and their applications in food pathogens monitoring. Moreover, the strengths and weaknesses of plasmonic biosensors implementation in food control are showcased. Key findings and conclusions: Plasmonic biosensors could simplify procedure and radically reduce time, price and consummation of reactants, compared to traditional microbiological methods. Optical biosensors, in particular SPR, have been developed for detection of different foodborne pathogens. In parallel, analytical improvements have been achieved by coupling different techniques (fiber optics, Raman, fluorescence, luminescence) to plasmonic sensors in order to reduce the limits of detection and to improve sensitivity. The future improvements include the miniaturization of instruments to handheld devices and simplification of analysis to enable direct target detection in food matrices. Plasmonic technology can certainly have long lasting impact because the need for a simple and rapid food assay is pressing and guarantees the future development in this field.

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Microdroplet-captured tapes for rapid sampling and SERS detection of food contaminants

Cited by 57 publications

References 47 publications

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates

Rapid and Sensitive Detection of Pentachloronitrobenzene by Surface-Enhanced Raman Spectroscopy Combined with Molecularly Imprinted Polymers

Plasmonic biosensors for food control

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