Mapping bacteria on filter membranes, an innovative SERS approach

Gao, Siyue; Pearson, Brooke; He, Lili

doi:10.1016/j.mimet.2018.03.005

Cited by 22 publications

(19 citation statements)

References 16 publications

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“…Functionalisation of Au shell -Ag core with DNA enhanced the sensitivity of SERS assays for 17β-estradiol by 10-folds [245] in comparison to 4-mercaptobenzoic acid [246]. Innovative approaches such as conjugation of SERS with filter membranes make bacterial mapping feasible [247]. Core-shell assemblies have been used to obtain direct [248] as well as sandwich assays [249] for bacteria detection.…”

Section: Reflectometric Interference Spectroscopy Biosensorsmentioning

confidence: 99%

Recent Progress in Optical Sensors for Biomedical Diagnostics

2020

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In recent years, several types of optical sensors have been probed for their aptitude in healthcare biosensing, making their applications in biomedical diagnostics a rapidly evolving subject. Optical sensors show versatility amongst different receptor types and even permit the integration of different detection mechanisms. Such conjugated sensing platforms facilitate the exploitation of their neoteric synergistic characteristics for sensor fabrication. This paper covers nearly 250 research articles since 2016 representing the emerging interest in rapid, reproducible and ultrasensitive assays in clinical analysis. Therefore, we present an elaborate review of biomedical diagnostics with the help of optical sensors working on varied principles such as surface plasmon resonance, localised surface plasmon resonance, evanescent wave fluorescence, bioluminescence and several others. These sensors are capable of investigating toxins, proteins, pathogens, disease biomarkers and whole cells in varied sensing media ranging from water to buffer to more complex environments such as serum, blood or urine. Hence, the recent trends discussed in this review hold enormous potential for the widespread use of optical sensors in early-stage disease prediction and point-of-care testing devices.

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Section: Reflectometric Interference Spectroscopy Biosensorsmentioning

confidence: 99%

Recent Progress in Optical Sensors for Biomedical Diagnostics

2020

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“…References 19 to 23 of Bozkurt et al (2018) provide additional examples of using SERS to detect E. coli. Gao, Pearson, and He (2018) used the properties of 4-mercaptophenylboronic acid (4-MPBA) to construct a SERS sensor for bacteria. This compound can interact with the peptidoglycan that is a characteristic of bacterial cell walls and it has a strong and unique SERS signal.…”

Section: Sersmentioning

confidence: 99%

“…Copyright © 2018 Elsevier F I G U R E 9 SERS maps of surface of sensor for different concentrations of E. coli O157:H7. Reprinted with permission from Gao et al (2018). Copyright © 2018 Elsevier technique can be used to detect S. typhimurium at the range of 10-10 5 CFU mL −1 with a limit of detection at 4 CFU mL −1 .…”

Section: Sersmentioning

confidence: 99%

Single and multiple detections of foodborne pathogens by gold nanoparticle assays

Pissuwan

Gazzana

Mongkolsuk

et al. 2019

WIREs Nanomed Nanobiotechnol

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A late detection of pathogenic microorganisms in food and drinking water has a high potential to cause adverse health impacts in those who have ingested the pathogens. For this reason there is intense interest in developing precise, rapid and sensitive assays that can detect multiple foodborne pathogens. Such assays would be valuable components in the campaign to minimize foodborne illness. Here, we discuss the emerging types of assays based on gold nanoparticles (GNPs) for rapidly diagnosing single or multiple foodborne pathogen infections. Colorimetric and lateral flow assays based on GNPs may be read by the human eye. Refractometric sensors based on a shift in the position of a plasmon resonance absorption peak can be read by the new generation of inexpensive optical spectrometers. Surface‐enhanced Raman spectroscopy and the quartz microbalance require slightly more sophisticated equipment but can be very sensitive. A wide range of electrochemical techniques are also under development. Given the range of options provided by GNPs, we confidently expect that some, or all, of these technologies will eventually enter routine use for detecting pathogens in food. This article is categorized under: Diagnostic Tools > Biosensing

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“…These advantages favor the use of SERS for detection of different contaminants, such as antibiotics, bacteria, explosive materials, synthetic food colorants, pesticides, and others . Nanoparticles of gold and silver are typical active supports for the SERS due to their superior physical/chemical properties (plasmonic surface effects) and simple fabrication .…”

Section: Introductionmentioning

confidence: 99%

“…SERS technique is based on strong enhancement of Raman scattering from a rough metal surface, providing the characteristic "fingerprint" of desirable substances with high degree of sensitivity at ultralow concentration. 7,8 These advantages favor the use of SERS for detection of different contaminants, such as antibiotics, 8 bacteria, 9,10 explosive materials, 11 synthetic food colorants, 12,13 pesticides, 14 and others. 15 Nanoparticles of gold and silver are typical active supports for the SERS 8,16 due to their superior physical/chemical properties (plasmonic surface effects) and simple fabrication.…”

Section: Introductionmentioning

confidence: 99%

Silver‐based surface enhanced Raman spectroscopy devices for detection of organophosphorus pesticides traces

Soares

2019

Biotechnology Progress

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The detection of traces of substances by surface‐sensitive techniques such as surface enhanced Raman spectroscopy (SERS) explores the interaction of adsorbed molecules on plasmonic surfaces to improve the limit of detection of analytes. This article is an overview about recent development in SERS substrates applied in the detection of organophosphorus pesticides on plasmonic surfaces (arrays of metal nanoparticles). The morphology, roughness, chemical functionalization degree, and aggregation level of plasmonic centers are some of the critical parameters to be controlled in the optimization of SERS signal from specific analytes.

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Mapping bacteria on filter membranes, an innovative SERS approach

Cited by 22 publications

References 16 publications

Recent Progress in Optical Sensors for Biomedical Diagnostics

Recent Progress in Optical Sensors for Biomedical Diagnostics

Single and multiple detections of foodborne pathogens by gold nanoparticle assays

Silver‐based surface enhanced Raman spectroscopy devices for detection of organophosphorus pesticides traces

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