JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 16
·12808-12818
·
IF 2.779
Li Qihui,Du Haiying,Li Junrui,Deng Jie,Wang Ruiyuan,Chen Yonglin
Tartrazine is used as a synthetic colorant to improve the color of food. Excessive intake of tartrazine will seriously harm human health. In this paper, a green and facile one-pot hydrothermal approach is proposed for the preparation of sulfur-doped carbon quantum dots ( S- CQDs) with Alternanthera philoxeroides (AP) powder and thiourea. The S- CQDs were developed as a highly sensitive “turn-off” fluorescent sensor for the detection of tartrazine. The S- CQDs displayed superior fluorescence characteristics of CQDs with a quantum yield (QY) up to 20.19%. S- CQDs exhibited the maximum fluorescence emission intensity at λ em = 462 nm under excitation at λ ex = 390 nm. The standard curve of S- CQDs had good linearity in the range of 7.8 ~ 125 μmol/L tartrazine, and the linear correlation coefficient ( R 2 ) was 0.9983. The S- CQDs were demonstrated to selectively react with tartrazine, leading to fluorescence quenching effect, which was successfully used for the detection of tartrazine with a limit of detection at 0.45 μmol/L, which was lower than the national standard detection limit of 187.14 μmol/L. The feasibility of practical application was assessed by the detection of tartrazine in real samples.
研究领域:
材料科学
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分析化学
·
食品安全
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高影响因子
JOURNAL OF AOAC INTERNATIONAL
·
2019
·Vol. 98
·期 3
·817-821
·
IF 1.201
Wang Wenchang,Chen Ye,Zhang Jing,Wang Xue,Chen Zhidong
A sensitive electrochemical method was developed for the simultaneous determination of Brilliant Blue (BB) and tartrazine (Tz) using an ionic liquid-modified expanded graphite paste electrode (IL-EGPE). The IL-EGPE was prepared by mixing ionic liquid-expanded graphite composite (IL-EG) with solid paraffin. Compared with the EGPE, the IL-EGPE remarkably enhanced the electrocatalytic oxidation signals of BB and Tz. Under optimal experimental conditions, the designed IL-EGPE exhibited wide linear responses to BB and Tz ranging from 5.0 × 10–9 to 4.0 × 10–6 M and 1.0 × 10–8 to 1.0 × 10–6 M, respectively. The detection limits for BB and Tz were 2.0 × 10–9 M (1.6 ng/mL) and 3.3 × 10–9 M (1.8 ng/mL) at an S/N of 3, respectively. This electrode showed good reproducibility, stability, and reusability. The proposed method was successfully applied in the simultaneous determination of BB and Tz in a soft drink with satisfactory results.
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高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2021
·Vol. 413
·期 5
·1485-1492
·
IF 4.157
Liu Lingfei,Sun Huijuan,Xiao Lixia,Yang Zhen-quan,Han Jie,Gong Xiaojuan,Hu Qin
In this work, an ultrasensitive sensing system based on fluorescent carbon dots (CDs) was developed for the tartrazine (Tar) determination. The CDs were prepared via a simple one-pot hydrothermal method with m-phenylenediamine as the only precursor. The physical and chemical properties were in detail characterized by transmission electron microscopy (TEM), MALDI-TOF MS, UV-vis absorption and photoluminescence (PL) spectroscopy, elemental analysis, and Fourier transform infrared spectroscopy (FTIR). Upon exposure to Tar, the fluorescence of CDs was efficiently quenched via the dynamic interaction between CDs and Tar as well as the inner filter effect (IFE). With this information, the CDs were proposed as a fluorescence probe for Tar detection. It was found that CDs had high sensitivity and selectivity for Tar sensing, and the linear relationship was observed in the range of 0.01–25.0 μM with the corresponding detection limit (3σ/k) of 12.4 nM, which is much more sensitive than any of the existed CD-based sensing platform. The investigated sensing system was finally utilized for Tar sensing in various food matrices with a high degree of accuracy. The spiked recoveries were in a range of 96.4–105.2%, and the relative standard deviations (RSDs) were lower than 4.13%. This work highlights the great application prospects of CDs for Tar sensing in a rapid, simple, and sensitive way.
研究领域:
分析化学
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食品科学
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纳米技术
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DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2015
·Vol. 162
·期 6
·H321
·
IF 3.266
Meiling Wang,Jianwei Zhao
A facile electrochemical sensor was fabricated via highly dispersing Multi-walled carbon nanotubes (MWCNTs) in ionic liquid-graphene oxides (IL-GO) "water" at room temperature. The introduction of IL (1-butyl-3-methylimidazolium hexafluorophosphate) to GO water resulted in the high dispersibility of MWCNTs and also caused fast electron transfer rates of the three dyes of Ponceau 4R (E124), Tartrazine (E102) and Allura red (E129) at the IL-GO-MWCNT composites modified glassy carbon electrode (IL-GO-MWCNT/GCE). Well-separated oxidation peaks and enhanced peak currents of Ponceau 4R, Allura red, and Tartrazine were observed at the IL-GO-MWCNT modified GCE. For individual detection, the linear responses of Ponceau 4R, Allura red, and Tartrazine were in the concentration ranges of 1.0 × 10−9-1.0 × 10−6, 8.0 × 10−10-5.0 × 10−7, and 1.0 × 10−8-1.0 × 10−6 mol L−1 with detection limits of 8.0 × 10−10, 5.0 × 10−10, and 7.0 × 10−9 mol L−1 (S/N = 3), respectively. For simultaneous determination by synchronous change of the concentrations of Ponceau 4R, Allura red, and Tartrazine, the linear response ranges were 8.0 × 10−9-1.5 × 10−7, 5.0 × 10−9-4.5 × 10−7 and 2.0 × 10−8-1.3 × 10−7 mol L−1 with the detection limits of 6.0 × 10−9, 3.0 × 10−9, and 1.0 × 10−8 mol L−1 (S/N = 3), respectively. The fabricated sensors were further applied for the detection of Ponceau 4R, Allura, red and Tartrazine in alcoholic beverages.
研究领域:
分析化学
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食品科学
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2022
·
IF 4.831
Xiaohui Peng,Ya Wang,Qingying Wang,Jiaojiao Tang,Maosen Zhang,Xiupei Yang
In this work, sulfur quantum dots (TPA-SQDs) protected by terephthalic acid as a stabilizer were synthesized using a one-pot method. When excited at 310 nm, the synthesized TPA-SQDs solution emitted strong blue fluorescence at 428 nm, and the absolute quantum yield was as high as 85.99%. The proposed SQDs can be used as a fluorescent probe to specifically quench tartrazine (TZ), showing a good linear relationship (R 2 = 0.996) at TZ concentrations of 0.1–20 μM, with a detection limit of 39 nM. By analysing the fluorescence lifetime, UV–Vis absorption spectrum and zeta potential of the assay system, it can be speculated that the fluorescence quenching mechanism of TZ on TPA-SQDs is the inner filter effect (IFE). The proposed method was applied to the detection of TZ in vitamin water and orange juice, and the results were consistent with the determination results by high-performance liquid chromatography. The recoveries and relative standard deviations were 93.2–102.6% and 1.34–2.88%, respectively, which provided an alternative method for the determination of TZ in beverages or other food samples.
研究领域:
分析化学
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食品科学
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材料科学
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DOI
PubMed
高影响因子
Current Research in Food Science
·
2026
·
IF 7
Yating Liu,Na Gan,Peiran Liu,Junjie Xu,Fang Geng,Di Wu
Unraveling the interaction mechanism between the food azo dye tartrazine (Tz) and β -lactoglobulin ( β -LG) under varying pH conditions is crucial for understanding their safe application in food systems. Molecular docking indicated that Tz primarily bound to the β -hydrophobic barrel of β -LG. The protonation of lysine residues diminished with increasing pH, which reduced hydrogen bond formation. The binding energy decreased from 8.77 kcal/mol (pH 2.0) to 8.43 kcal/mol (pH 7.4). Molecular dynamics simulations indicated that Tz bound exerts the greatest structural influence on β -LG at pH 2.0. Fluorescence and thermodynamic analyses confirmed that Tz quenched β -LG fluorescence through a static mechanism, through their interaction was a spontaneous process driven mainly by hydrophobic forces. The protonation level of β -LG gradually decreased with increasing pH, and electrostatic repulsion between β -LG and Tz was observed at pH 7.4. As a result, the binding constant between Tz and β -LG decreased from 6.669 × 10 5 L/mol (pH 2.0) to 3.596 × 10 5 L/mol (pH 5.2) and 0.956 × 10 5 L/mol (pH 7.4), respectively. Furthermore, Tz induced changes in the secondary structure content of β -LG and reduced its surface hydrophobicity under all pH conditions.
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PubMed
高影响因子
IONICS
·
2025
·
IF 2.6
Li Chunxiang,Xia Sushuang,Qian Xinmei,Zheng Mingyu,Deng Keqin
Electrocatalyst with high accumulation capacity and efficient electrocatalysis are crucial for constructing electrochemical sensors. In this study, 3D hierarchical nitrogen-doped carbon nanosheets decorated by Fe 3 O 4 /CoFe nanoparticles (Fe 3 O 4 /CoFe@N-CSs) were successfully prepared. The morphology, composition, microstructure, and property were investigated by SEM, HRTEM, XRD, XPS, and cyclic voltammetry. The synthesized Fe 3 O 4 /CoFe@N-CSs were assembled by two-dimensional (2D) nanosheets to form flower-like layered structure. It displayed a large amount of pore space for promoting the accumulation of targets and brilliant electrocatalysis towards the electrochemical oxidation of sunset yellow (SY) and tartrazine (TTZ). Using Fe 3 O 4 /CoFe@N-CSs to modify screen-printed electrode (SPE), a disposable electrochemical sensor (Fe 3 O 4 /CoFe@N-CSs/SPE) was constructed for the analysis of SY and TTZ. It showed the detection range of 0.008–5.0 μM and 0.02–10.0 μM with the detection limit of 2.0 nM and 4.0 nM, respectively. The practical applicability of the sensor in real drink samples provided satisfactory data. The results indicated that Fe 3 O 4 /CoFe@N-CSs was a promising nanomaterial, contributing great potential for individual and synchronous measurement of trace amounts of SY and TTZ in food samples.
研究领域:
分析化学
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食品科学
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DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2024
·
IF 2.6
Zhu RongGui,Jin Lei,Yang Bing,Ma Yuan,Zhou You,Xiao RongDan,Meng YiJie,Hou Ye,Xie BenTing,Jiang Xiu Juan
A green, economical and simple method for the preparation of water-soluble, high-fluorescent carbon quantum dots (CQDs) has been developed via hydrothermal process using pomelo peels as carbon source. The synthesized CQDs were characterized by transmission electron microscopy (TEM), X-ray diffraction(XRD), Fourier transform infrared spectroscopy (FTIR), UV − vis absorption spectra and fluorescence spectrophotometer. The results reveal that the as-prepared C-dots were spherical shape with an average diameter of 2.64 nm and emit bright blue photoluminescence (PL) with a quantum yield of approximately 3.63%. The surface of the C-dots was rich in hydroxyl groups and presented various merits including excellent photostability, low toxicity, and satisfactory solubility. Additionally, we found that two widely used synthetic food colorants, tartrazine and sunset yellow, could result in a strong fluorescence quenching of the C-dots, The possible mechanisms are caused by different ratios of inner filter and static quenching effects. According to this property, This study attempts to establish an analytical method for the determination of tartrazine and sunset yellow using carbon quantum dots as fluorescent probe. A linear relationship was found in the range of 0-100 µM tartrazine and sunset yellow with the detection limit(3σ/k) of 0.65 nM and 1.7 nM. The relative standard deviation (RSD) was 3.5% (tartrazine) and 3.0% (sunset yellow).This observation was further successfully applied for the determination of tartrazine and sunset yellow in food samples collected from local markets, and the recovery rates of the two ranges from 79% to 117.8 and 81 -103.5%, respectively. suggesting its great potential toward food routine analysis.
研究领域:
食品科学
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分析化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Nguyen Trung Dung,Le Thuy Duong,Nguyen Thi Hoa,Vu Dinh Thao,Le Viet Ngan,Nguyen Nhat Huy
In this study, cobalt ferrite coated carbon felt (CoFe 2 O 4 /CF) was synthesized by solvothermal method and applied as cathode for electro-Fenton (EF) treatment of tartrazine (TTZ) in water. The materials were characterized by SEM, XRD, FTIR, CV, and EIS to explore their physical, chemical, and electrical properties. The effects of solvothermal temperature and metal content on the TTZ removal were examined, showing that 220 °C with 2 mM of Co and 4 mM of Fe precursors were the best synthesis condition. Various influencing factors such as applied current density, pH, TTZ concentration, and electrolytes were investigated, and the optimal condition was found at 8.33 mA cm −2 , pH 3, 50 mgTTZ L −1 , and 50 mM of Na 2 SO 4 , respectively. By radical quenching test, , 1 O 2 , and HO were recognized as the key reactive oxygen species and the reaction mechanism was proposed for the EF decolorization of TTZ using CoFe 2 O 4 /CF cathode. The reusability and stability test showed that the highly efficient CoFe 2 O 4 /CF cathode is very promising for practical application in wastewater treatment , especially for dyes and other recalcitrant organic compounds to improve its biodegradability .
研究领域:
环境科学
·
水处理
·
材料科学
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DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2018
·
IF 2.88
Yingping Li,Yong Jia,Qi Zeng,Xiaohui Jiang,Zhengjun Cheng
We used thiamine nitrate (TN) as single material to fabricate nitrogen and sulfur co-doped carbon quantum dots (N,S-CQDs) with a quantum yield of 10.4% through one-pot hydrothermal method , and its properties were characterized by TEM, XPS, FTIR, fluorescence (FL) and UV–vis spectrophotometer, respectively. The fluorescence of N,S-CQDs was effectively quenched in the presence of vitamin B12 (VB12)/tartrazine due to Förster resonance energy transfer (FRET). Moreover, the rate ( K T ) and efficiency ( E %) of energy transfer from N,S-CQDs (as a donor) to VB12/tartrazine (as an acceptor) enhanced with increasing the concentrations of acceptor, and the K T and E % were also varied with the change of excitation wavelengths (from 338 to 408 nm). Based on this principle, a multifunctional fluorescence probe was designed for selective and sensitive detection of VB12/tartrazine with a detection limit (3σ/slope) of 15.6/18.0 nmol/L. Meanwhile, the proposed method was successfully employed to detect VB12/tartrazine in milk and several beverages with a recovery range of 97.5–104.2%/91.0–110.6%.
研究领域:
分析化学
·
生物医学工程
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PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Peilong Wang,Xu Liu,Qingqing Hu,Hui Gao,Wei Ma
A simple and rapid electrochemical method based on a poly(L-arginine)-electrochemically reduced graphene oxide-modified glassy carbon electrode fabricated by cyclic voltammetry has been developed for the determination of tartrazine. Compared with the bare glassy carbon electrode, the modified electrode achieved a well-defined and enhanced oxidation peak due to the increased conductivity and electrochemical active surface area. The bare glassy carbon electrode and the modified electrode were characterized by scanning electron microscopy and electrochemical impedance spectroscopy. The electrocatalytic oxidation behaviors of tartrazine on the modified electrode were investigated using cyclic voltammetry and differential pulse voltammetry. The voltammetric peak current of tartrazine exhibits good linearity in the range of 1.00×10 -6 -2.50×10 -4 mol L -1 under the optimal differential pulse voltammetry conditions, with a detection limit of 2.5×10 -7 mol L -1 (at an S/N of 3). This proposed method has also been applied for quantitative analysis of tartrazine in some carbonated beverage and fruit juice samples, with satisfactory results.
研究领域:
分析化学
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食品科学
·
电化学
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高影响因子
DYES AND PIGMENTS
·
2022
·
IF 5.122
Lin Yuan,Lei Jiang,Ze Liu,Yingying Xiang,Fei Song,Yujiao Tu
Tartrazine preferred in food and textile industries, but excessive consumption threats human health. Due to toxicity, non-biodegradability, and trace accumulation in the food chains, Hg 2+ has attracted people's attention. Thus, it is important to detect tartrazine and Hg 2+ with sensitivity way. Using VB 2 and citrate as precursors, yellow-green fluorescent carbon dots were prepared by hydrothermal method . The N-CDs were purified by dialysis, thin layer chromatography and chromatographic column. Excellent linear ranges of 0.25–5 μM and 5–50 μM of tartrazine were obtained with low detection limits 34.98 nM, while good linear ranges of 0.25–5 μM and 10–50 μM of Hg 2+ with low detection limits 29.64 nM, respectively. In addition, the quenching mechanisms of targets to the fluorescent of N-CDs were illuminated. Furthermore, the nanoprobe was efficiently applied to determine the content of tartrazine in carbonated drink, fruit jelly and sugar samples, and Hg 2+ in tap water, lake water, and river water samples. It showed great potential to detect tartrazine and Hg 2+ .
研究领域:
分析化学
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环境科学
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食品科学
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高影响因子
危险品化学品经营许可证（带存储）