Application of SERS quantitative analysis method in food safety detection

Zhou, Hualan; Li, Xiaodi; Wang, Lehui; Liang, Yingfang; Jialading, Aikedan; Wang, Zishuo; Zhang, Jianguo

doi:10.1515/revac-2021-0132

Cited by 53 publications

(21 citation statements)

References 89 publications

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“…To this end, the intensity of the xylene SERS bands is reported as a function of the xylene concentration, in Figure 18b, where the linear fit of the 722-730 cm −1 modes is also reported and shows a good linear dependence of the signal with the xylene concentration (Adj R-square of 0.96). This value is comparable to a SERS based Napthalene sensor [56] and is within the range of literature of other SERS sensors for polycyclic aromatic hydrocarbons [57], for food products [58] and for food contaminants [59].…”

Section: Detection Of Xylenesupporting

confidence: 85%

Hybrid Sol-Gel Surface-Enhanced Raman Sensor for Xylene Detection in Solution

Weber

Brigo

Brusatin

et al. 2021

Sensors

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This paper reports on the fabrication and characterization of a plasmonic/sol-gel sensor for the detection of aromatic molecules. The sol-gel film was engineered using polysilsesquioxanes groups to capture the analyte, through π-π interaction, and to concentrate it close to the plasmonic surface, where Raman amplification occurs. Xylene was chosen as an analyte to test the sensor. It belongs to the general class of volatile organic compounds and can be found in water or in the atmosphere as pollutants released from a variety of processes; its detection with SERS is typically challenging, due to its low affinity toward metallic surfaces. The identification of xylene was verified in comparison with that of other aromatic molecules, such as benzene and toluene. Investigations were carried out on solutions of xylene in cyclohexane, using concentrations in the range from 0 to 800 mM, to evaluate the limit of detection (LOD) of about 40 mM.

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Section: Detection Of Xylenesupporting

confidence: 85%

Hybrid Sol-Gel Surface-Enhanced Raman Sensor for Xylene Detection in Solution

Weber

Brigo

Brusatin

et al. 2021

Sensors

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“…Surface-enhanced Raman spectroscopy (SERS) based sensors are widely used to detect the pesticides in agricultural products and pesticide residues in foods due to their unique intrinsic advantages such as recognition of materials even at a molecular level, non-destructive technique, easy preparation of samples, simultaneous detection of different analytes, the possibility of recording the measurements in biological fluids, etc. [1] The origin of SERS is generally attributed to electromagnetic (EM) and chemical (CM) enhancement mechanisms, which enhance the Raman peak intensity of the target molecules up to many folds. [2] Generally, metal nanoparticles (MNPs) are potential candidates for SERS-based sensors and show a high enhancement factor even at the very low concentration of an analyte through EM.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive, Cost‐Effective, and Flexible SERS Substrate Based on Green Synthesized GO/rGO for Pesticide Detection**

et al. 2022

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In this work, a novel approach is adopted to synthesize graphene oxide (GO) and reduced graphene oxide (rGO) from a natural precursor Desmostachya bipinnata (halfa grass). GO is synthesized by treating ash of halfa grass with aqueous and molten KOH. Further, reduced with lemon extract to synthesize rGO. Then GO and rGO active SERS substrates are fabricated with flexible adhesive tape. Structural and morphological features of SERS substrates are analyzed. Raman spectrum of GO and rGO consists of characteristic D and G peaks around 1331 and 1600 cm−1 and a 2D peak around 2700 cm−1. The variation in ID/IG ratio, decreasing inter‐planar spacing, and the redshift of UV – Vis absorption peak from 225 to 280 nm confirm the reduction of GO on lemon extract treatment. SERS activity of fabricated substrates is analyzed with agro pesticide thiabendazole (TBZ). The detection range of TBZ by SERS substrate lies between 1 mM to 1 nM with a minimum detection limit of 1 nM. This study emphasizes the use of GO synthesized from aqueous KOH treatment and reduced with lemon extract (rGO) for the development of highly sensitive, low cost and flexible SERS substrates to detect TBZ in various agricultural products.

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“…Chromium (Cr) is one necessary element in industry, but the impact of hexavalent chromium (Cr(VI)) on human health should not be underestimated [10][11][12]. Once its Molecules 2022, 27, 4294 2 of 8 content exceeds the standard in water (existing in the form of Cr 2 O 7 2− ), it will be enriched in the crops and passed to the human body through the food chain, which will cause various diseases [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

High-Quality Conjugated Polymers Achieving Ultra-Trace Detection of Cr2O72− in Agricultural Products

Liu

et al. 2022

Molecules

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In view of that conjugated polymers (CPs) are an attractive option for constructing high-sensitive Cr2O72− sensors but suffer from lacking a general design strategy, we first proposed a rational structure design of CPs to tailor their sensing properties while validating the structure-to-performance correlation. Short side chains decorated with N and O atoms as recognition groups were instructed into fluorene to obtain monomers Fmoc-Ala-OH and Fmoc-Thr-OH. Additionally, their polymers P(Fmoc-Ala-OH) and P(Fmoc-Thr-OH) were obtained through electrochemical polymerization. P(Fmoc-Ala-OH) and P(Fmoc-Thr-OH) with high polymerization degrees have an excellent selectivity towards Cr2O72− in comparison to other cations and anions. Additionally, their limit of detection could achieve 1.98 fM and 3.72 fM, respectively. Especially, they could realize the trace detection of Cr2O72− in agricultural products (red bean, black bean, and millet). All these results indicate that short side chains decorated with N and O atoms functionalizing polyfluorene enables the ultra-trace detection of Cr2O72−. Additionally, the design strategy will spark new ideas for the construction of highly selective and sensitive Cr2O72− sensors.

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Application of SERS quantitative analysis method in food safety detection

Cited by 53 publications

References 89 publications

Hybrid Sol-Gel Surface-Enhanced Raman Sensor for Xylene Detection in Solution

Hybrid Sol-Gel Surface-Enhanced Raman Sensor for Xylene Detection in Solution

Highly Sensitive, Cost‐Effective, and Flexible SERS Substrate Based on Green Synthesized GO/rGO for Pesticide Detection**

High-Quality Conjugated Polymers Achieving Ultra-Trace Detection of Cr2O72− in Agricultural Products

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