Separable surface enhanced Raman spectroscopy sensor platformed by HPTLC for facile screening of malachite green in fish

Chen, Yisheng; Chen, Qifei; Wei, Xiao

doi:10.1016/j.microc.2021.106694

Cited by 10 publications

(3 citation statements)

References 41 publications

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“…Principally based on the procedure described by Chen, 29 the Raman and SERS response of saccharin were recorded on a DXRxi laser confocal microscopy Raman spectrometer (Thermo Fisher, USA), with the following settings: incident laser wavelength 785 nm and signal acquisition averaged from three times accumulations of 10 s. To evaluate the activity of the substrate, pieces of the as-prepared substrate were immersed into the pure saccharin solutions (1, 0.1, 0.01, 0.001, 0.0001, 0.00001 mg mL −1 ) for 5 min. Then, they were placed on a piece of clean aluminum foil for SERS measurements.…”

Section: Methodsmentioning

confidence: 99%

“…The exible substrate with high and stable SERS activity was fabricated by combining glass ber paper and AgNPs, principally based on the in situ reduction method previously optimized in our laboratory. 26,27 Briey, four beakers were lled with a silver nitrate solution (0.02 mol L À1 ), ultra-pure water, sodium borohydride solution (0.02 mol L À1 ) and ultra-pure water, respectively, and the beakers were placed on a shaker at an oscillation frequency of 120 rpm. Then, a piece of glass ber paper was soaked for 30 s in each of the four beakers successively.…”

Section: Flexible Sers Substrate Fabricationmentioning

confidence: 99%

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HPTLC screening of saccharin in beverages by densitometry quantification and SERS confirmation

et al. 2022

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Section: Methodsmentioning

confidence: 99%

Section: Flexible Sers Substrate Fabricationmentioning

confidence: 99%

HPTLC screening of saccharin in beverages by densitometry quantification and SERS confirmation

et al. 2022

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“…Apart from that, HPTLC also displayed many intrinsic advantages, such as simplicity, matrix-tolerance and high-throughput. This enabled the analyst to expand the capacity of HPTLC by easily integrating a large array of assays that conventionally performed interpedently, such as surface enhanced Raman spectroscopy [ 15 , 16 , 17 ] and IR [ 18 , 19 ]. Particularly, HPTLC separation in combination with elaborately chosen effect-directed assays, also termed bioautography, had been demonstrated a novel and promising tool for screening of compounds with specific bioactivity in bio-mixtures [ 20 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

HPTLC-Bioluminescent Bioautography Screening of Herbal Teas for Adulteration with Hypolipidemic Drugs

Wang

et al. 2023

Biosensors

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Teas based on nutraceutical herbs are an effective tool against hyperlipidemia. However, the adulteration with chemical drugs is frequently detected. By coupling bioluminescent bioautography with high performance thin-layer chromatography (HPTLC), we developed a facile method suitable for screening hypolipidemic drugs (ciprofibrate and bezafibrate) adulteration in five different herbal teas (lotus leaf, Apocynum, Ginkgo biloba, Gynostemia and chrysanthemum). First, the sensitivity of a bioluminescent bacteria to the analyte was evaluated on different HPTLC layer materials, revealing that the best performance was achieved on the silica gel layer. On this basis, sample extracts were separated on silica gel plates via a standardized HPTLC procedure, forming a selective detection window for the targeted compound. Then, the separation results were rapidly visualized by the bioluminescence inhibition of bacteria cells within 6 min after dipping. The observed inhibition displayed an acceptable limit of detection (<20 ng/zone or 2 mg/kg) and linearity (R2 ≥ 0.9279) within a wide concentration range (50–1000 ng/zone). Furthermore, the optimized method was performed with artificially adulterated samples and the recovery rates were determined to be within the range of 71% to 91%, bracing its practical reliability. Showing superiorly high simplicity, throughput and specificity, this work demonstrated that the analytical method jointly based on HPTLC and bioautography was an ideal tool for screening bioactive compounds in complex biological matrix.

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Highly sensitive SERS detection of residual nitrofurantoin and 1‐amino‐hydantoin in aquatic products and feeds

Fan

Gao

Jiao³

et al. 2021

Luminescence

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Nitrofurantoin (NFT), a typical highly effective nitrofuran antibiotic drug, has been prohibited but still widely found in animal food products. It can be metabolized in animals to form 1‐amino‐hydantoin (AHD) that can then form stable and toxic metabolite‐protein adducts. Hence, the detection of NFT and AHD in aquatic products and feeds is very important. However, there are limited reports concerning NFT detection and none about AHD by using surface‐enhanced Raman spectroscopy (SERS) method. Herein, potassium bromide (KBr) decorated silver (Ag) nanoparticles (Ag‐BrNPs)‐based SERS approach was proposed for NFT and AHD detection. The limit of detection (LOD) for NFT was 1 μg/L. The detection of NFT residues in sea cucumber and fish feeds was also realized with the LOD of 1 and 50 ng/g, respectively. More importantly, the sensing of AHD was easily realized with the SERS approach for the first time. After the derivatization with 2‐nitrobenzaldehyde (2‐NBA), Ag‐BrNPs were also successfully utilized for AHD detection in sea cucumber with the LOD of 5 ng/g.

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Separable surface enhanced Raman spectroscopy sensor platformed by HPTLC for facile screening of malachite green in fish

Cited by 10 publications

References 41 publications

HPTLC screening of saccharin in beverages by densitometry quantification and SERS confirmation

HPTLC screening of saccharin in beverages by densitometry quantification and SERS confirmation

HPTLC-Bioluminescent Bioautography Screening of Herbal Teas for Adulteration with Hypolipidemic Drugs

Highly sensitive SERS detection of residual nitrofurantoin and 1‐amino‐hydantoin in aquatic products and feeds

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