Surface-Imprinted Gold Nanoparticle-Based Surface-Enhanced Raman Scattering for Sensitive and Specific Detection of Patulin in Food Samples

Wu, Long; Yan, Heng; Li, Guanghui; Xu, Xiaohong; Zhu, Lin; Chen, Xiaoqiang; Wang, Jing

doi:10.1007/s12161-019-01498-4

Cited by 61 publications

(21 citation statements)

References 48 publications

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“…In this regard, a number of analytical techniques such as high-performance liquid chromatography, gas chromatography–mass spectrometry, Raman spectroscopy, etc., are extensively used in food safety laboratories. However, complicated procedures, requirement of expert personnel, and comparatively higher cost have compelled the stakeholders to invest on the development of compact, simple, and efficient sensing devices that could offer a multitude of advantages in terms of precision, selectivity, robustness, easy fabrication, good sensitivity, minimal power requirement, specificity, reproducibility, and short analysis time. − In this context, electrochemical sensors have emerged as analytical tools of ideal choice due to their improved selectivity, miniaturization, and high sensitivity. , …”

Section: Introductionmentioning

confidence: 99%

A Novel Electrochemical Nanosensor for the Simultaneous Sensing of Two Toxic Food Dyes

Shah

2020

ACS Omega

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This work reports for the first time the preparation and performance of a nanosensor for the simultaneous detection of metanil yellow and fast green, which are toxic food dyes. For the development of this sensitive platform, the surface of a glassy carbon electrode (GCE) was modified with calixarene and gold nanoparticles. The sensing ability of the designed nanosensor (calix8/Au NPs/GCE) was tested by cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy. The influence of a number of parameters was investigated for optimizing the conditions to achieve the best response of the target analytes. Due to the synergistic activity of calix[8]arene and Au nanoparticles, the calix8/Au NPs/GCE nanocomposite was found to significantly enhance the signals of the selected food dyes in comparison to bare GCE. Under optimized conditions, limits of detection for metanil yellow and fast green were found to be 9.8 and 19.7 nM, respectively, at the calix8/Au NPs/GCE. The designed sensing platform also demonstrated figures of merit when applied for the sensing of food dyes in real water and juice samples. Moreover, high percent recovery, reproducibility, and stability suggested applicability of the designed electrochemical platform for real sample analysis.

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Section: Introductionmentioning

confidence: 99%

A Novel Electrochemical Nanosensor for the Simultaneous Sensing of Two Toxic Food Dyes

Shah

2020

ACS Omega

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“…Using these substrates, mycotoxins such as PAT, which is a very small molecule, was detected with high performance using SERS. 106 MIPs has been developed for the recognition of other mycotoxins, DON, OTA, ZEN, FB1, and trichothecene T-2, indicating a possible application in SERS. 135−140 High sensitivity and selectivity are not difficult to accomplish using functionalized nanoparticles, and the practicality and accuracy can always be improved, because of the flexibility of these systems.…”

Section: Applications Of Sers On the Study Of Mycotoxinsmentioning

confidence: 99%

“…In addition, MIPs can be applied to recognize and capture low-molecular-weight analytes. , MIPs can be synthesized directly on the surfaced of nanoparticles in the presence of the template, a monomer, a cross-linker, and an initiator molecule and, as a result, MIPs@NPs will be obtained. Using these substrates, mycotoxins such as PAT, which is a very small molecule, was detected with high performance using SERS . MIPs has been developed for the recognition of other mycotoxins, DON, OTA, ZEN, FB1, and trichothecene T-2, indicating a possible application in SERS. − …”

Section: Applications Of Sers On the Study Of Mycotoxinsmentioning

confidence: 99%

Detection of Mycotoxins in Food Using Surface-Enhanced Raman Spectroscopy: A Review

Calvo

2020

ACS Appl. Bio Mater.

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Mycotoxins are toxic metabolites produced by fungi that contaminate many important crops worldwide. Humans are commonly exposed to mycotoxins through the consumption of contaminated food products. Mycotoxin contamination is unpredictable and unavoidable; it occurs at any point in the food production system under favorable conditions, and they cannot be destroyed by common heat treatments, because of their high thermal stability. Early and fast detection plays an essential role in this unique challenge to monitor the presence of these compounds in the food chain. Surface-enhanced Raman spectroscopy (SERS) is an advanced spectroscopic technique that integrates Raman spectroscopic molecular fingerprinting and enhanced sensitivity based on nanotechnology to meet the requirement of sensitivity and selectivity, but that can also be performed in a costeffective and straightforward manner. This Review focuses on the SERS methodologies applied to date for qualitative and quantitative analysis of mycotoxins based on a variety of SERS substrates, as well as our perspectives on current limitations and future trends for applying this technique to mycotoxin analyses.

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“…The molecular imprinting technique (MIT) coupled with electrochemical sensors provides an opportunity to address the above concerns. As it is known that MIPs are characterized by predetermined structure-activity, specific recognition, and wide practicability [ 30 , 31 ]. As MIPs have specific recognition for target molecules, they can act as receptors to construct MIT-based electrochemical sensors (MIECs) with high specificity [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Towards Development of Molecularly Imprinted Electrochemical Sensors for Food and Drug Safety: Progress and Trends

et al. 2022

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Due to their advantages of good flexibility, low cost, simple operations, and small equipment size, electrochemical sensors have been commonly employed in food safety. However, when they are applied to detect various food or drug samples, their stability and specificity can be greatly influenced by the complex matrix. By combining electrochemical sensors with molecular imprinting techniques (MIT), they will be endowed with new functions of specific recognition and separation, which make them powerful tools in analytical fields. MIT-based electrochemical sensors (MIECs) require preparing or modifying molecularly imprinted polymers (MIPs) on the electrode surface. In this review, we explored different MIECs regarding the design, working principle and functions. Additionally, the applications of MIECs in food and drug safety were discussed, as well as the challenges and prospects for developing new electrochemical methods. The strengths and weaknesses of MIECs including low stability and electrode fouling are discussed to indicate the research direction for future electrochemical sensors.

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Surface-Imprinted Gold Nanoparticle-Based Surface-Enhanced Raman Scattering for Sensitive and Specific Detection of Patulin in Food Samples

Cited by 61 publications

References 48 publications

A Novel Electrochemical Nanosensor for the Simultaneous Sensing of Two Toxic Food Dyes

A Novel Electrochemical Nanosensor for the Simultaneous Sensing of Two Toxic Food Dyes

Detection of Mycotoxins in Food Using Surface-Enhanced Raman Spectroscopy: A Review

Towards Development of Molecularly Imprinted Electrochemical Sensors for Food and Drug Safety: Progress and Trends

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