Dual-mode of magnetic assisted Au@Ag SERS tags and cationic conjugated UCNPs for qualitative and quantitative analysis of multiple foodborne pathogens

Xu, Yanhua; Hassan, Mehedi; Zhu, Afang; Li, Huanhuan; Chen, Quansheng

doi:10.1016/j.snb.2021.130305

Cited by 51 publications

(25 citation statements)

References 34 publications

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“…The actual detection capacity of the substrate was evaluated by the spiked recovery ( 39 ), which was calculated as follows for the concentration measure:…”

Section: Resultsmentioning

confidence: 99%

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Detection of glutathione in dairy products based on surface-enhanced infrared absorption spectroscopy of silver nanoparticles

Tian

et al. 2022

Front. Nutr.

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In this paper, silver nanoparticles (AgNPs) were prepared as enhanced substrates for the detection of glutathione in dairy products by polyol reduction of silver nitrate. The infrared spectra were collected and analyzed by surface-enhanced infrared absorption spectroscopy (SEIRA) method of transmission mode using a cell of calcium fluoride window sheet immobilization solution for the study. The disappearance of the thiol (–SH) absorption peak in the infrared spectrum, and the shift of its characteristic absorption peak when glutathione was bound to AgNPs solvate indicated the Ag–S bond interaction and the aggregation of AgNPS. AgNPs accumulate to form “hot spots”, resulting in enhanced electromagnetic fields and thus enhanced infrared signals of glutathione. The intensity of the characteristic absorption peak at 1,654 cm−1 (carbonyl C=O bond stretching) was used for the quantitative analysis of glutathione. After optimizing the conditions, glutathione content in pretreated pure milk and pure ewe's milk was determined using AgNPs in combination with SEIRA. Good linearity was obtained in the range of 0.02–0.12 mg/mL with correlation coefficients (R2) of 0.9879 and 0.9833, respectively, and LOD of 0.02 mg/mL with average spiked recoveries of 101.3 and 92.5%, respectively. The results show that the method can be used for accurate determination of glutathione content in common dairy products.

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“…The actual detection capacity of the substrate was evaluated by the spiked recovery ( 39 ), which was calculated as follows for the concentration measure:…”

Section: Resultsmentioning

confidence: 99%

“…The method was used for the rapid detection of glutathione in milk and ewe's milk samples based on its characteristic absorption peaks. The actual detection capacity of the substrate was evaluated by the spiked recovery (39), which was calculated as follows for the concentration measure:…”

Section: Analysis Of Enhanced Substrate Response To Glutathione In Da...mentioning

confidence: 99%

Detection of glutathione in dairy products based on surface-enhanced infrared absorption spectroscopy of silver nanoparticles

Tian

et al. 2022

Front. Nutr.

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“…The dual mode of determining three types of bacteria ( Escherichia coli , Salmonella , Staphylococcus aureus ) in contaminated milk, with the possibility of qualitative and quantitative determination, was demonstrated by Xu et al [ 201 ]. In this work, two types of nanoparticles were applied: functionalized upconverting nanoparticles as a fluorescent probe and bimetallic (Au@Ag) magnetic nanoparticles modified with 4-mercaptophenylboronic acid (4-MPBA) as a SERS tag.…”

Section: Recent Advances Of Raman Spectroscopy In Biosensingmentioning

confidence: 99%

Raman Scattering-Based Biosensing: New Prospects and Opportunities

et al. 2021

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The growing interest in the development of new platforms for the application of Raman spectroscopy techniques in biosensor technologies is driven by the potential of these techniques in identifying chemical compounds, as well as structural and functional features of biomolecules. The effect of Raman scattering is a result of inelastic light scattering processes, which lead to the emission of scattered light with a different frequency associated with molecular vibrations of the identified molecule. Spontaneous Raman scattering is usually weak, resulting in complexities with the separation of weak inelastically scattered light and intense Rayleigh scattering. These limitations have led to the development of various techniques for enhancing Raman scattering, including resonance Raman spectroscopy (RRS) and nonlinear Raman spectroscopy (coherent anti-Stokes Raman spectroscopy and stimulated Raman spectroscopy). Furthermore, the discovery of the phenomenon of enhanced Raman scattering near metallic nanostructures gave impetus to the development of the surface-enhanced Raman spectroscopy (SERS) as well as its combination with resonance Raman spectroscopy and nonlinear Raman spectroscopic techniques. The combination of nonlinear and resonant optical effects with metal substrates or nanoparticles can be used to increase speed, spatial resolution, and signal amplification in Raman spectroscopy, making these techniques promising for the analysis and characterization of biological samples. This review provides the main provisions of the listed Raman techniques and the advantages and limitations present when applied to life sciences research. The recent advances in SERS and SERS-combined techniques are summarized, such as SERRS, SE-CARS, and SE-SRS for bioimaging and the biosensing of molecules, which form the basis for potential future applications of these techniques in biosensor technology. In addition, an overview is given of the main tools for success in the development of biosensors based on Raman spectroscopy techniques, which can be achieved by choosing one or a combination of the following approaches: (i) fabrication of a reproducible SERS substrate, (ii) synthesis of the SERS nanotag, and (iii) implementation of new platforms for on-site testing.

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“…In recent years, the detection of pathogenic bacteria has been of great significance to human health [1][2][3]. Until now, the conventional detection methods based on culture systems have been unable to meet the rapid requirements of bacteria [4].…”

Section: Introductionmentioning

confidence: 99%

In Situ Collection and Rapid Detection of Pathogenic Bacteria Using a Flexible SERS Platform Combined with a Portable Raman Spectrometer

Zhao

Dong

Wang

et al. 2022

IJMS

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This study aims to develop a simple, sensitive, low-cost, environmentally friendly and flexible surface-enhanced Raman scattering (SERS) platform, combined with a portable Raman spectrometer, for the rapid and on-site SERS detection of bacteria. Commercial tobacco packaging paper (TPP) with little background interference was used as a loading medium that effectively adsorbed Au nanoparticles and provided sufficient “hot spots”. This Au-tobacco packaging paper (Au-TPP) substrate used as a flexible SERS platform can maximize sample collection by wiping irregular surfaces, and was successfully applied to the on-site and rapid detection of pathogenic bacteria. Raman fingerprints of pathogenic bacteria can be obtained by SERS detection of spiked pork using wipeable Au-TPP, which verifies its value in practical applications. The results collected by SERS were further verified by polymerase chain reaction (PCR) results. It showed several advantages in on-site SERS detection, including accurate discrimination, simple preparation, easy operation, good sensitivity, accuracy and reproducibility. This study indicates that the established flexible SERS platform has good practical applications in pathogenic bacterial identification and other rapid detections.

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Dual-mode of magnetic assisted Au@Ag SERS tags and cationic conjugated UCNPs for qualitative and quantitative analysis of multiple foodborne pathogens

Cited by 51 publications

References 34 publications

Detection of glutathione in dairy products based on surface-enhanced infrared absorption spectroscopy of silver nanoparticles

Detection of glutathione in dairy products based on surface-enhanced infrared absorption spectroscopy of silver nanoparticles

Raman Scattering-Based Biosensing: New Prospects and Opportunities

In Situ Collection and Rapid Detection of Pathogenic Bacteria Using a Flexible SERS Platform Combined with a Portable Raman Spectrometer

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