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He Y, Zou H, Zhou S, Liu D, Jiang X, Zhang Z, Li S. Smartphone-assisted fluorescent sensor for the visualization and quantitative detection of doxycycline and L-arginine. Food Chem 2024; 459:140365. [PMID: 39024874 DOI: 10.1016/j.foodchem.2024.140365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/20/2024]
Abstract
A novel smartphone-assisted fluorescent sensor based on europium/zirconium metal-organic framework (Eu0.5/Zr0.5-MOF) was developed for the fast and sensitive determination of doxycycline (DOX) and L-arginine (Arg). After the addition of DOX, the fluorescence of Eu0.5/Zr0.5-MOF was quenched owing to the inner filter effect (IFE). When Arg was introduced into the Eu0.5/Zr0.5-MOF@DOX complex system, the fluorescence was recovered because the interaction between Arg and Eu0.5/Zr0.5-MOF@DOX weakened the IFE. Moreover, the Eu0.5/Zr0.5-MOF produced continuous fluorescence color changes for the visual measurement of DOX and Arg. The fluorescent probe for DOX and Arg offered broad linear ranges of 0.05-80 and 0.1-60 μg/mL, respectively, with detection limits as low as 2.07 and 67.5 ng/mL. The proposed method was successfully applied to monitor DOX in eggs and Arg in human serum. This work provides a powerful platform for the real-time and visual analysis of DOX and Arg in food and biological samples.
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Affiliation(s)
- Yuxin He
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Hecun Zou
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Song Zhou
- School of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Dongmei Liu
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Xinhui Jiang
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Zhengwei Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China.
| | - Siqiao Li
- School of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China.
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2
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Wang Y, Wei X, Su Y, Xu R, Song D, Ding L, Chen Y. Highly sensitive fluoroprobe for detecting Sudan dyes in paprika utilizing carbon dot-embedded zeolitic imidazolate framework-8. Food Chem 2024; 438:137975. [PMID: 37979265 DOI: 10.1016/j.foodchem.2023.137975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/10/2023] [Accepted: 11/10/2023] [Indexed: 11/20/2023]
Abstract
In this manuscript, we synthesized CDs@ZIF-8 through a one-step, in-situ method by integrating green-emitting carbon dots (CDs) with zeolitic imidazolate framework-8 (ZIF-8). The resulting CDs@ZIF-8 was utilized as an ultrasensitive probe for detection, leveraging the inner filter effect. The analysis demonstrated the capability to detect Sudan dyes. Sudan I, for example, could be detected within a concentration range spanning from 0.25 to 70 μM, achieving a remarkable detection limit of 76.56 nM. This established method was effectively employed for detecting Sudan I in paprika. Compared with CDs, CDs@ZIF-8 exhibited a 3.32-fold increase in sensitivity and a wider detection range. This enhanced performance was attributed to the porous ZIF-8, which allowed for the enrichment of targets around CDs and avoided the aggregation of CDs. Additionally, embedding the CDs in ZIF-8 improved their pH stability. Our study provides a new approach for using CDs under limited conditions by leveraging metal-organic frameworks.
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Affiliation(s)
- Yanjie Wang
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Xiaofeng Wei
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yu Su
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Rui Xu
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Daqian Song
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China; Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Lan Ding
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
| | - Yanhua Chen
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China; Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
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3
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Mir TUG, Malik AQ, Shukla S, Singh J, Kumar D. Facile Synthesis of S-doped Carbon Quantum Dots and Their Application in the Detection of Sudan I in Saffron. J Fluoresc 2024; 34:253-263. [PMID: 37195542 DOI: 10.1007/s10895-023-03264-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/08/2023] [Indexed: 05/18/2023]
Abstract
This study employed citric acid as a carbon source and thiourea as a sulphur source to conduct a straightforward one-step microwave synthesis of sulphur-doped carbon quantum dots (SCQDs). For the characterization of as-synthesized SCQDs, several methods such as fluorescence spectroscopy, X-Ray photoelectron spectroscopy (XPS), X-Ray diffraction (XRD), and zeta potential analyzer were utilized. XRD and XPS spectroscopy are used to examine the chemical composition and morphological aspects. These QDs have a limited size distribution spanning up to 5.89 nm, with a maximum distribution at 7 nm, according to zeta size analyser examinations. At an excitation wavelength of 340 nm, the highest fluorescence intensity (FL intensity) of SCQDs was attained. With a detection limit of 0.77 M, the synthesized SCQDs were employed as an efficient fluorescent probe for the detection of Sudan I in saffron samples.
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Affiliation(s)
- Tahir Ul Gani Mir
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, 144411, Punjab, India.
| | - Azad Qayoom Malik
- School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, 144411, Punjab, India
| | - Saurabh Shukla
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, 144411, Punjab, India.
| | - Jaskaran Singh
- Department of Forensic Science, Geeta University, Naultha, Panipat, 132145, India
| | - Deepak Kumar
- School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, 144411, Punjab, India
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4
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Li H, Sheng W, Haruna SA, Hassan MM, Chen Q. Recent advances in rare earth ion-doped upconversion nanomaterials: From design to their applications in food safety analysis. Compr Rev Food Sci Food Saf 2023; 22:3732-3764. [PMID: 37548602 DOI: 10.1111/1541-4337.13218] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 07/09/2023] [Accepted: 07/11/2023] [Indexed: 08/08/2023]
Abstract
The misuse of chemicals in agricultural systems and food production leads to an increase in contaminants in food, which ultimately has adverse effects on human health. This situation has prompted a demand for sophisticated detection technologies with rapid and sensitive features, as concerns over food safety and quality have grown around the globe. The rare earth ion-doped upconversion nanoparticle (UCNP)-based sensor has emerged as an innovative and promising approach for detecting and analyzing food contaminants due to its superior photophysical properties, including low autofluorescence background, deep penetration of light, low toxicity, and minimal photodamage to the biological samples. The aim of this review was to discuss an outline of the applications of UCNPs to detect contaminants in food matrices, with particular attention on the determination of heavy metals, pesticides, pathogenic bacteria, mycotoxins, and antibiotics. The review briefly discusses the mechanism of upconversion (UC) luminescence, the synthesis, modification, functionality of UCNPs, as well as the detection principles for the design of UC biosensors. Furthermore, because current UCNP research on food safety detection is still at an early stage, this review identifies several bottlenecks that must be overcome in UCNPs and discusses the future prospects for its application in the field of food analysis.
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Affiliation(s)
- Huanhuan Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Wei Sheng
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Suleiman A Haruna
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Md Mehedi Hassan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
- College of Food and Biological Engineering, Jimei University, Xiamen, P. R. China
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5
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Wu Q, Duan XJ, Lv HT, Wang LT. Red-emitting carbon dots as fluorescent probes for the rapid detection of brilliant blue FCF in foods. Food Control 2023. [DOI: 10.1016/j.foodcont.2023.109719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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6
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Shi T, Liu T, Zhang J, Cai D, Zhang Y. A test strip constructed by molecular imprinting for ratiometric fluorescence with ultra-low limit of detection for selective monitoring of Sudan I in chili powder. Mikrochim Acta 2023; 190:263. [PMID: 37332000 DOI: 10.1007/s00604-023-05825-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/04/2023] [Indexed: 06/20/2023]
Abstract
An up-conversion molecularly imprinted ratiometric fluorescent probe with a monodisperse nuclear-satellite structure and its test strip are designed which can avoid fluorescent background interference to detect Sudan I in chili powder highly selective and sensitive. The detection mechanism is based on the selective recognition of Sudan I by imprinted cavities on the surface of ratiometric fluorescent probe and the inner filter effect between Sudan I molecules and the emission of up-conversion materials (NaYF4:Yb,Tm). Under optimized experimental conditions, the response of fluorescent ratio signals (F475/F645) of this test strip show a good linear relationship in the range 0.02-50 μM Sudan I. The limits of detection and quantitation are as low as 6 nM and 20 nM, respectively. Sudan I is selectively detected in the presence of fivefold higher concentrations of interfering substances (imprinting factor up to 4.4). Detection of Sudan I in chili powder samples show ultra-low LOD (44.7 ng/g), satisfactory recoveries (94.99-105.5%) and low relative standard deviation (≤ 2.0%). This research offers a reliable strategy and promising scheme for highly selective and sensitive detection of illegal additives in complex food matrix via an up-conversion molecularly imprinted ratiometric fluorescent test strip.
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Affiliation(s)
- Tian Shi
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Tong Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Jinyuan Zhang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Da Cai
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Yueli Zhang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, China.
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7
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Venugopalan P, Vidya N. Long pepper (Piper longum) derived carbon dots as fluorescent sensing probe for sensitive detection of Sudan I. LUMINESCENCE 2023; 38:401-409. [PMID: 36755504 DOI: 10.1002/bio.4459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/14/2023] [Accepted: 02/05/2023] [Indexed: 02/10/2023]
Abstract
In this piece of work, microwave-assisted conversion of a natural precursor in to high-valued nano-scale material was carried out by a completely greener method. The fluorescent carbon dots prepared, designated as long pepper derived carbon dots (LPCDs), have been thoroughly characterized to explore the physical and chemical properties. The system exhibits excitation dependent emission behavior and from the optimal studies the excitation and emission wavelength of the system was found to be 330 nm and 455 nm respectively. On account of the superior fluorescent behavior of the LPCDs, it was successfully employed as a fluorescent sensing probe to detect Sudan I with good level of selectivity and sensitivity. This carcinogenic dye extensively used as food adulterant can impart several health issues. Food product safety is of high concern, therefore a simple facile and economical analytical method was proposed based on the fluorescence of LPCDs for this dye detection with satisfactory statistical parameters. A linear relationship was maintained in the range of 0 to 27.27 μM Sudan I with limit of detection of 0.92 μM. The quenching mechanism was studied and finally attributed to Förster resonance energy transfer (FRET) mechanism. In addition, the probe was effectively implemented for Sudan I detection in commercial chili powder samples with good level of recovery parameters.
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Affiliation(s)
- P Venugopalan
- Department of Chemistry, Sree Neelakanta Government Sanskrit College (Affiliated to University of Calicut), Pattambi, Kerala, India
| | - N Vidya
- Department of Chemistry, Sree Neelakanta Government Sanskrit College (Affiliated to University of Calicut), Pattambi, Kerala, India
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8
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A novel ADA-coated UCNPs@NB sensing platform combined with nucleic acid amplification for rapid detection of Escherichia coli. Anal Chim Acta 2023; 1239:340751. [PMID: 36628739 DOI: 10.1016/j.aca.2022.340751] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 12/11/2022] [Accepted: 12/26/2022] [Indexed: 12/28/2022]
Abstract
In this study, we reported a novel sensing platform based on fluorescence quenching composed of alendronic acid (ADA) coated upconversion nanoparticles (UCNPs) and Nile Blue (NB) combined with polymerase chain reaction (PCR) for rapid, sensitive, and specific detection of Escherichia coli (E. coli). As a fluorescence acceptor, NB has a broad absorption band and can quench upconversion fluorescence intensity at 544 nm and 658 nm based on IFE. PCR is a double-stranded DNA (dsDNA) amplification technique with high specificity. The NB-dsDNA complex can be formed by intercalation of NB between base pairs and groove of dsDNA, leading to upconversion fluorescence recovery. The ADA-coated UCNPs@NB sensing platform achieved to detect E. coli in 1.5 h, with a lower limit of detection (33 CFU mL-1). In addition, the sensitivity of the ADA@UCNPs-NB fluorescence sensor under different PCR cycle numbers was discussed. The results showed that the proposed sensor could effectively shorten the assay time (1.0 h) while maintaining excellent sensitivity. This study demonstrated a rapid and sensitive analytical method for detecting E. coli in chicken, providing a reference for constructing PCR fluorescence sensors.
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9
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Yu Y, Zhang L, Gao X, Feng Y, Wang H, Lei C, Yan Y, Liu S. Research Progress in the Synthesis of Carbon Dots and Their Application in Food Analysis. BIOSENSORS 2022; 12:1158. [PMID: 36551125 PMCID: PMC9775108 DOI: 10.3390/bios12121158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/30/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Food safety is connected to public health, making it crucial to protecting people's health. Food analysis and detection can assure food quality and effectively reduce the entry of harmful foods into the market. Carbon dots (CDs) are an excellent choice for food analysis and detection attributable to their advantages of good optical properties, water solubility, high chemical stability, easy functionalization, excellent bleaching resistance, low toxicity, and good biocompatibility. This paper focuses on the optical properties, synthesis methods, and applications of CDs in food analysis and detection, including the recent advances in food nutritional composition analysis and food quality detection, such as food additives, heavy metal ions, foodborne pathogens, harmful organic pollutants, and pH value. Moreover, this review also discusses the potentially toxic effects, current challenges, and prospects of CDs in basic research and applications. We hope that this review can provide valuable information to lay a foundation for subsequent research on CDs and promote the exploration of CDs-based sensing for future food detection.
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Affiliation(s)
- Yuan Yu
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing 312000, China
| | - Lili Zhang
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xin Gao
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yuanmiao Feng
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Hongyuan Wang
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Caihong Lei
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing 312000, China
| | - Yanhong Yan
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Shuiping Liu
- College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
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10
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Analytical detection methods for azo dyes: A focus on comparative limitations and prospects of bio-sensing and electrochemical nano-detection. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104778] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Shi T, Cheng Z, Liu T, Ye Z, Zhang Y. An up-conversion test paper based on "switch-off" of fluorescence is constructed to sensitively and selectively detect cancer-causing dye Sudan III in lipstick. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121515. [PMID: 35728403 DOI: 10.1016/j.saa.2022.121515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/31/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Cancer-causing dye Sudan III is banned adding to cosmetics, so a method for detecting trace Sudan III in cosmetics is established. A single dispersed up-conversion molecularly imprinted fluorescent nanoprobe is constructed and coated on the filter paper. The mechanism for detecting Sudan III by this composite fluorescent nanoprobes-paper is systematically analyzed. The fluorescent response (max emission peak is at 541 nm) is linearly related to 10-1000 nM Sudan III, and Sudan III can be selectively recognized (imprinting factor increased to 4.1). The limit of detection and quantitation are further reduced to 2.89 nM and 9.63 nM, respectively. The recoveries of Sudan III in lipstick samples are between 93.18 and 108.3%, and relative standard deviation is less than or equal to 4.6%. Trace Sudan III in cosmetics are detected accurately and sensitively by this method due to up-conversion nanoparticles with little interference of background fluorescence and molecularly imprinted polymers with selective enrichment.
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Affiliation(s)
- Tian Shi
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China
| | - Zhiyuan Cheng
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China
| | - Tong Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China
| | - Zhiqi Ye
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China
| | - Yueli Zhang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China.
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12
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Wang X, Lin T, Wu W, Wu H, Yan D. Synthesis of N-doped carbon dots for highly selective and sensitive detection of metronidazole in real samples and its cytotoxicity studies. ENVIRONMENTAL TECHNOLOGY 2022; 43:4213-4226. [PMID: 34184621 DOI: 10.1080/09593330.2021.1946164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/13/2021] [Indexed: 06/13/2023]
Abstract
The current investigation reports the synthesis of N-CDs using glucosamine, ascorbic acid, and ethylenediamine precursors by a simple hydrothermal technique. The formation of N-CDs was proved by various characterisation techniques such as X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and Fourier-Transform Infrared Spectrophotometer (FT-IR). The optical properties were investigated by fluorescence and UV-vis spectrophotometer. Also, N-CDs showed high selectivity in detecting the MTZ compared to several other analytes. However, the metronidazole serves as an antibiotic against several microbial diseases but also a genotoxic, carcinogenic to the human when used in excessive dosage. The synthesised N-CDs showed high selectivity in detecting the MTZ compared to several other analytes. Besides, the cytotoxicity of the N-CDs was studied to evaluate its toxicity against the HeLa cancer cells. It showed 65.6% cell viability and 34.3% toxicity against the cancerous cells, and similarly 71% of cells viability against H9C2 cells. Thus, the current investigation explores the promising selective sensing of N-CDs against MTZ, along with that, it proved its cytotoxicity against HeLa cancerous cells and non-toxicity against H9C2 cells. The synthesised CDs can be better MTZ sensors and anti-cancer agents on further development at the industrial scale.
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Affiliation(s)
- Xiaoxiang Wang
- Ministry of Education Key Laboratory of Integrated Regulations and Resource Department on Shallow Lakes, College of Environment, Hohai University, Nanjing, People's Republic of China
- Jiangsu Academy of Environmental Industry and Technology Corp., Nanjing, People's Republic of China
| | - Tao Lin
- Ministry of Education Key Laboratory of Integrated Regulations and Resource Department on Shallow Lakes, College of Environment, Hohai University, Nanjing, People's Republic of China
| | - Wei Wu
- Jiangsu Academy of Environmental Industry and Technology Corp., Nanjing, People's Republic of China
| | - Haisuo Wu
- Jiangsu Academy of Environmental Industry and Technology Corp., Nanjing, People's Republic of China
| | - Dongdong Yan
- Jiangsu Academy of Environmental Industry and Technology Corp., Nanjing, People's Republic of China
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13
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Sun R, Lv R, Li Y, Du T, Chen L, Zhang Y, Zhang X, Zhang L, Ma H, Sun H, Qi Y. Simple and sensitive electrochemical detection of sunset yellow and Sudan I in food based on AuNPs/Zr-MOF-Graphene. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Sun L, Sun C, Ge Y, Zhang Z, Zhou J. Inner filter effect-based upconversion fluorescence sensing of sulfide ions. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:3680-3685. [PMID: 36063084 DOI: 10.1039/d2ay01072k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Upconversion nanocrystals (UCNCs) have emerged as a new type of fluorescent probe for sensing applications. Herein, we designed a 980 nm excited upconversion luminescence system, composed of core-shell-structured NaYF4 : Yb,Er@NaYF4 : Yb nanocrystals (csUCNCs) and the triethylenetetramine-Cu complex (complex-I), for quantitative detection of sulfide ions. Taking advantage of the specific recognition of complex-I toward S2-, the as-formed compound (complex-II) exhibits excellent spectral overlap not only in the range of fluorescence emissions of UCNCs but also in the excitation wavelength for UCNCs; fluorescence quenching of UCNCs occurs where the complex-II acts as the energy acceptor. Due to the electrostatic repulsion between positively charged ligand-free csUCNCs and complex-I, the fluorescence quenching is based on the primary and secondary inner filter effect rather than the fluorescence resonance energy transfer process. The detection limit of S2- for the upconversion-based system is calculated to be 2.7 μM, exhibiting higher detection sensitivity over the single complex-I compound measured by the spectrophotometric method. Moreover, no significant variation in upconversion luminescence is observed upon the addition of other interfering ions, showing the excellent selectivity of this nanoprobe toward S2-.
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Affiliation(s)
- Lanjuan Sun
- School of Chemistry and Chemical Engineering, Southeast University, No. 2 Dongnandaxue Road, Nanjing, Jiangsu 211189, P. R. China.
| | - Chunning Sun
- Inorganic Chemistry and Catalysis Group, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
| | - Yang Ge
- School of Chemistry and Chemical Engineering, Southeast University, No. 2 Dongnandaxue Road, Nanjing, Jiangsu 211189, P. R. China.
| | - Zhaoming Zhang
- Shangdong Yellow Triangle Biotechnology Industry Research Institute Co.Ltd., Dongying Shangdong 257091, P. R. China
| | - Jiancheng Zhou
- School of Chemistry and Chemical Engineering, Southeast University, No. 2 Dongnandaxue Road, Nanjing, Jiangsu 211189, P. R. China.
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15
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Chen M, Yan Z, Han L, Zhou D, Wang Y, Pan L, Tu K. Upconversion Fluorescence Nanoprobe-Based FRET for the Sensitive Determination of Shigella. BIOSENSORS 2022; 12:bios12100795. [PMID: 36290932 PMCID: PMC9599926 DOI: 10.3390/bios12100795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/21/2022] [Accepted: 09/25/2022] [Indexed: 11/16/2022]
Abstract
Shigella as a typical foodborne pathogen has strong survivability in the environment or food, leading to infectious diseases, yet its rapid detection technology with high selectivity and sensitivity remains challenging. In this study, complementary strand modified upconversion nanoparticles (UCNPs) can offer stable yellow-green fluorescence at 500–700 nm excited by a 980 nm laser. Importantly, Shigella aptamer modified gold nanoparticles (GNPs) formed by “Au−S” bond act as a fluorescence resonance energy transfer (FRET) donor and recognition element that can bind specifically to Shigella and significantly quench the fluorescence of complementary strand modified UCNPs. As a result, the fluorescence of our developed nanoprobe increased linearly with the increase in Shigella in a wide range from 1.2 × 102 to 1.2 × 108 CFU/mL and the detection limit was as low as 30 CFU/mL. Moreover, the fabricated upconversion fluorescence nanoprobe can achieve Shigella detection in contaminated chicken without enrichment in 1 h.
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Affiliation(s)
- Min Chen
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhongyu Yan
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Lu Han
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Dandan Zhou
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yan Wang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Leiqing Pan
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Kang Tu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
- Correspondence: ; Tel.: +86-25-8439-9016
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Polyoxometalates-graphene nanocomposites modified electrode for electro-sensing detection of Sudan I in food. Food Chem Toxicol 2022; 166:113222. [PMID: 35690185 DOI: 10.1016/j.fct.2022.113222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/18/2022] [Accepted: 06/06/2022] [Indexed: 11/24/2022]
Abstract
Sudan I, a lipophilic azo dye -dye, is desirable and urgent to be accurate detected due to its increasing levels and high toxicity in food and environmental monitoring and analysis. Herein, a sensitive electrochemical sensor for Sudan I was established based on a new K10P2W18Fe4(H2O)2O68 functionalized carbon nanomaterials (Fe4P2W18-GNPS). The electrode modified nanocomposite, Fe4P2W18-GNPS, was successfully fabricated and characterized by FTIR, SEM and UV-vis. The effective combination of Fe4P2W18 and graphene exhibited high electrocatalytic activity towards the oxidation of Sudan I, promote charge transfer, and more sensing sites. Under optimized experimental conditions, the proposed differential pulse voltammetry (DPV) showed excellent analytical performances for Sudan I with the limit of detection (LOD) of 5 nM (S/N = 3), the sensitivity of 13.10 μA·μM-1cm-2 at the 0.005-2 μM and 0.39 μA·μM-1cm-2 at 10-200 μM. The stability and reproducibility make the electrochemical sensor suitable for detecting the Sudan I in food.
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17
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Sohal N, Maity B, Basu S. Morphology Effect of One-Dimensional MnO 2 Nanostructures on Heteroatom-Doped Carbon Dot-Based Biosensors for Selective Detection of Glutathione. ACS APPLIED BIO MATERIALS 2022; 5:2355-2364. [PMID: 35485731 DOI: 10.1021/acsabm.2c00189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Structural versatility of MnO2 nanostructures plays a significant role in biosensing applications. So, we have prepared simple and selective "turn-off-on" sensing probes for the detection of glutathione (GSH), based on nitrogen, sulfur codoped carbon dots (N, S-Cdots) and different morphologies of one-dimensional (1-D) MnO2 nanostructures. N, S-Cdots with a high fluorescence quantum yield (73.42%) were prepared by a green approach through high-temperature pyrolysis in just 5 min. The different morphologies of 1-D MnO2 nanostructures (nanowires with varying aspect ratios and nanorods) were synthesized through a hydrothermal method by varying the reaction period (8, 10, and 12 h). MnO2 nanowires prepared at 8 h showed a high specific surface area (34 m2 g-1) with a large aspect ratio. They showed significant fluorescence quenching, Stern-Volmer constants, and binding constants in the presence of N, S-Cdots. Further, ultraviolet-visible absorption, zeta potential, and time decay studies showed that the quenching mechanism of the developed sensing system was the inner filter effect, which was further confirmed by using the Parker equation. The N, S-Cdots-MnO2 nanowire (with a high aspect ratio) sensing system showed the best limit of detection, i.e., 28.5 μM for GSH. This fast, simple, eco-friendly, and cost-effective sensing system can be further used for real-time biosensing and bioimaging application.
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Affiliation(s)
- Neeraj Sohal
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, India
| | - Banibrata Maity
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, India
| | - Soumen Basu
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, India
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Xiong D, Zhu N, Zhu F, Yakubu S, Lv J, Liu J, Zhang Z. Investigation and risk assessment of dibutyl phthalate in a typical region by a high-throughput dual-signal immunoassay. JOURNAL OF HAZARDOUS MATERIALS 2022; 425:127991. [PMID: 34896710 DOI: 10.1016/j.jhazmat.2021.127991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/27/2021] [Accepted: 12/02/2021] [Indexed: 06/14/2023]
Abstract
The systematic investigation and risk assessment of dibutyl phthalate (DBP) were performed using an ultrasensitive dual-signal immunoassay in Zhenjiang, Jiangsu Province. In this study, C-dots@H-MnO2 nanohybrid were synthesized and labelled on the secondary antibody to generate fluorometric and colorimetric signals. Attributed to the efficient catalysis of carbon dots (C-dots) and the high C-dots loading of hollow manganese (IV) oxide (H-MnO2), the excellent sensitivity and low detection limits (0.243 and 0.692 μg/L respectively) were produced. Based on the proposed method, 25 water and 119 beverage samples were investigated. DBP was found in all water samples and 65.5% of beverage samples, with the concentrations varying in 16.5-32.1 μg/L and 0-553 μg/L, respectively. In addition, the mean concentration (22.9 μg/L) in waters was decreased significantly compared with that detected in 2016 (43.5 μg/L) by our Lab. For beverages, a similar phenomenon was observed by the measured concentrations from coffee. Furthermore, the potential ecological risks of DBP were evaluated, the results indicated that human activities had caused serious pollution and high risks to the local aquatic ecosystem. On the other hand, the results of health risk assessment suggested that DBP in beverages might not cause obvious side effects to local residents.
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Affiliation(s)
- Dinghui Xiong
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Nuanfei Zhu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Fang Zhu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Salome Yakubu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jungang Lv
- Procuratoral Technology and Information Research Center, Supreme People's Procuratorate, Beijing 100000, China
| | - Jingfu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 2871, Beijing 100085, China
| | - Zhen Zhang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China.
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19
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Terthiophene-functionalized mesoporous silica-based fluorescence sensor for the detection of trace methyl orange in aqueous media. Mikrochim Acta 2021; 188:410. [PMID: 34739614 DOI: 10.1007/s00604-021-05063-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 10/12/2021] [Indexed: 10/19/2022]
Abstract
A terthiophene-functionalized mesoporous SBA-15 silica, i.e., TTU-SBA-15, was successfully developed and used as a highly selective and ultrasensitive fluorescence sensor for methyl orange (MO) detection. When the concentration of MO was increased, the fluorescence emission intensity of TTU-SBA-15 suspensions at 452 nm gradually decreased at an excitation wavelength of 368 nm, and the color of the suspension solutions changed obviously from blue to dark under 365 nm UV light. The fluorescence intensity at 452 nm was linearly proportional to the concentration of MO in the range 0.20 - 2.0 μM, with a detection limit of 0.092 μM. Competitive pollutants, variations in pH, and sample recycling had subtle or negligible effects on the detection of MO. TTU-SBA-15 was applied to the determination of MO in tap water, and recoveries from spiked samples were in the range 98.3 - 103.0%. This study provides a convenient and effective strategy to realize highly sensitive and selective sensors that could target dyes via the functional modification of mesoporous materials.
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20
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Abbasi A, Ansari II, Shakir M. Highly Selective and Sensitive Benzimidazole Based Bifunctional Sensor for Targeting Inedible Azo Dyes in Red Chilli, Red Food Color, Turmeric Powder, and Cu(Ii) in Coconut Water. J Fluoresc 2021; 31:1353-1361. [PMID: 34143392 DOI: 10.1007/s10895-021-02766-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 06/01/2021] [Indexed: 10/21/2022]
Abstract
In this study, a simple Benzimidazole based bifunctional chemosensor 4-(2-(3,4-dimethoxyphenyl)-1H-benzo[d]imidazol-6-yl) benzene-1,2-diamine, L was synthesized and characterized. The sensor proved to be selective and sensitive towards detecting banned azo dyes Sudan Dye I, II, and Metanil Yellow via fluorescence turn-off response. The proposed mechanism of fluorescence quenching was the inner filter effect. LODs for Sudan I, II, and Metanil Yellow were found to be 0.009 µM, 0.012 µM, and 0.0073 µM, respectively. The developed chemosensor also showed a colorimetric response towards Cu (II) ions via an apparent color change from yellow to pink. LOD for Cu (II) ions was found to be 1.2 µM. The synthesized benzimidazole based bifunctional chemosensor was adequately tested to determine Sudan I in Red chili powder and red Food color samples, Metanil yellow in turmeric powder, and Cu(II) packaged coconut water.
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Affiliation(s)
- Ambreen Abbasi
- Division of Inorganic Chemistry, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, India
| | - Ifra Ilyas Ansari
- Division of Inorganic Chemistry, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, India
| | - Mohammad Shakir
- Division of Inorganic Chemistry, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, India.
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21
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Rong Y, Hassan MM, Ouyang Q, Chen Q. Lanthanide ion (Ln 3+ )-based upconversion sensor for quantification of food contaminants: A review. Compr Rev Food Sci Food Saf 2021; 20:3531-3578. [PMID: 34076359 DOI: 10.1111/1541-4337.12765] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 03/31/2021] [Accepted: 04/03/2021] [Indexed: 12/23/2022]
Abstract
The food safety issue has gradually become the focus of attention in modern society. The presence of food contaminants poses a threat to human health and there are a number of interesting researches on the detection of food contaminants. Upconversion nanoparticles (UCNPs) are superior to other fluorescence materials, considering the benefits of large anti-Stokes shifts, high chemical stability, non-autofluorescence, good light penetration ability, and low toxicity. These properties render UCNPs promising candidates as luminescent labels in biodetection, which provides opportunities as a sensitive, accurate, and rapid detection method. This paper intended to review the research progress of food contaminants detection by UCNPs-based sensors. We have proposed the key criteria for UCNPs in the detection of food contaminants. Additionally, it highlighted the construction process of the UCNPs-based sensors, which includes the synthesis and modification of UCNPs, selection of the recognition elements, and consideration of the detection principle. Moreover, six kinds of food contaminants detected by UCNPs technology in the past 5 years have been summarized and discussed fairly. Last but not least, it is outlined that UCNPs have great potential to be applied in food safety detection and threw new insight into the challenges ahead.
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Affiliation(s)
- Yawen Rong
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Md Mehedi Hassan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Qin Ouyang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
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22
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Kumar B, Malhotra K, Fuku R, Van Houten J, Qu GY, Piunno PA, Krull UJ. Recent trends in the developments of analytical probes based on lanthanide-doped upconversion nanoparticles. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116256] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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23
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Yang Q, Li Q, Li H, Li F. pH-Response Quantum Dots with Orange-Red Emission for Monitoring the Residue, Distribution, and Variation of an Organophosphorus Pesticide in an Agricultural Crop. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:2689-2696. [PMID: 33635638 DOI: 10.1021/acs.jafc.0c08212] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Development of simple, sensitive, and reliable fluorescence sensors for monitoring the residue, distribution, and variation of organophosphorus pesticides (OPs) in agricultural crops is highly urgent but remains challenging, which is ascribed to deprivation of an ideal fluorophore and ingenious detection strategy. Herein, we report the fabrication of cadmium telluride quantum dots (CdTe QDs) with bright emission, good water dispersion, and long emission wavelength for OP screening based on the unique response of CdTe QDs to pH and the inhibition of OPs on acetylcholinesterase (AChE) activity. AChE catalyzed hydrolysis of acetylcholine (ACh) into CH3COOH, which protonated CdTe QDs to decline the fluorescence, whereas target OP impeded AChE from catalyzing hydrolysis of ACh into CH3COOH, making little influence in fluorescence of CdTe QDs. On the basis of the change in fluorescence, sensitive detection of OP was acquired, with the limit of detection at 0.027 ng/mL, which was comparable or lower than that of most known OP sensors. Furthermore, the CdTe-QD-based sensor was successfully applied for precisely monitoring the residue, distribution, and variation of methidathion in Chinese cabbage and cultivated soil. Therefore, the proposed sensor was anticipated to supply a promising alternative for food safety guarantee and was an valuable application for OP screening.
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Affiliation(s)
- Qiaoting Yang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, Shandong 266109, People's Republic of China
| | - Qian Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, Shandong 266109, People's Republic of China
| | - Haiyin Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, Shandong 266109, People's Republic of China
| | - Feng Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, Shandong 266109, People's Republic of China
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24
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Zhao D, Zhang Z, Liu X, Zhang R, Xiao X. Rapid and low-temperature synthesis of N, P co-doped yellow emitting carbon dots and their applications as antibacterial agent and detection probe to Sudan Red I. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 119:111468. [DOI: 10.1016/j.msec.2020.111468] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 08/23/2020] [Accepted: 08/27/2020] [Indexed: 11/24/2022]
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25
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Hu Y, Gao Z. Sensitive detection of Sudan dyes using tire-derived carbon dots as a fluorescent sensor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 239:118514. [PMID: 32470803 DOI: 10.1016/j.saa.2020.118514] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 05/11/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
In this paper, we exploit an innovative strategy to reuse waste rubber tires as a low-cost source for the fabrication of a high-value material, fluorescent carbon dots (CDs). In the hydrothermal condition, ammonium persulphate is utilized to oxidize the tires and offer nitrogen atom for doping, to produce CDs with a high quantum yield (QY) of up to 23.8%. Such a QY is outstanding among the reported waste-derived CDs. It is found that the fluorescence of CDs can be remarkably quenched by Sudan I-IV with negligible interference from other substances. The corresponding linear ranges are 0.5-60, 0.5-60, 1-70, and 1-70 μM, and limits of detection are 0.17, 0.21, 0.53, and 0.62 μM for Sudan I, II, III, and IV, respectively. Systematic investigations reveal that the fluorescence quenching mainly stems from the inner filter effect. Moreover, the CD-based sensor shows an excellent applicability for the assay of Sudan dyes in chili powder sample.
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Affiliation(s)
- Yaoping Hu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China.
| | - Zhijin Gao
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
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26
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Luminescent Chemosensor Based on Ru(II) Bipyridine Complex for Detection of Sudan I through Inner Filter Effect. J Fluoresc 2020; 30:1543-1551. [PMID: 32803523 DOI: 10.1007/s10895-020-02602-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 07/30/2020] [Indexed: 02/04/2023]
Abstract
Presence of Sudan I in food stuff can be problematic and need to be checked in order to protect our health from possible carcinogen. Therefore, it is essential to detect Sudan I by efficient, rapid and reliable method. In this work, we have designed a Ru(II) polypyridyl complex, [Ru(bpy)2(CIP)]2+ probe for the selective and sensitive detection of Sudan I. Upon addition of Sudan I to the solution of [Ru(bpy)2(CIP)]2+ in ethanol, the luminescence quenched rapidly, and linear concentration range with analyte has been obtained from 0.8 to 100 μM with the limit of detection as low as 0.26 μM (S/N = 3). The effective luminescence quenching was resulted due to the inner filter effect (IFE) between luminophore, [Ru(bpy)2(CIP)]2+ and quencher, Sudan I. Our spectroscopic study was essentially provided sufficient analytical evidences in order to prove occurrence of IFE mechanism. As there were no interferences observed in luminescence measurement from the other substances the present probe has been successfully applied for the detection of Sudan I in commercial chili powder sample, making the probe suitable for practical usage.
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27
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Non-destructive fluorescence spectroscopy combined with second-order calibration as a new strategy for the analysis of the illegal Sudan I dye in paprika powder. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104539] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Abbasi A, Hanif S, Shakir M. Gum acacia-based silver nanoparticles as a highly selective and sensitive dual nanosensor for Hg(ii) and fluorescence turn-off sensor for S 2- and malachite green detection. RSC Adv 2020; 10:3137-3144. [PMID: 35497744 PMCID: PMC9048504 DOI: 10.1039/c9ra10372d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 12/28/2019] [Indexed: 12/26/2022] Open
Abstract
A facile and green method was adopted to synthesize highly selective gum acacia-mediated silver nanoparticles as dual sensor (fluorescence turn-on and colorimetric) for Hg(ii) and fluorescence turn-off sensor for S2- and malachite green. The mechanism proposed for a dual response towards Hg(ii) is the redox reaction between Ag(0) and Hg(ii), resulting in the formation of Ag(i) and Hg(0) and electron transfer from gum acacia to Ag(i), which further leads to the formation of an Ag@Hg nanoalloy. The enhanced fluorescence signal was quenched selectively by S2- owing to the formation of Ag2S and HgS. The reported nanosensor was found to be useful for sensing malachite green via the inner filter effect. The linear ranges were 3 nmol L-1 to 13 μmol L-1 for Hg(ii), 3-170 μmol L-1 for S2- and 7-80 μmol L-1 for malachite green, and the corresponding detection limits were 2.1 nmol L-1 for Hg(ii), 1.3 μmol L-1 for S2- and 1.6 μmol L-1 for malachite green.
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Affiliation(s)
- Ambreen Abbasi
- Division of Inorganic Chemistry, Department of Chemistry, Aligarh Muslim University Aligarh 202002 India +919837430035
| | - Summaiya Hanif
- Division of Inorganic Chemistry, Department of Chemistry, Aligarh Muslim University Aligarh 202002 India +919837430035
| | - Mohammad Shakir
- Division of Inorganic Chemistry, Department of Chemistry, Aligarh Muslim University Aligarh 202002 India +919837430035
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29
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Wu C, Zhu L, Lu Q, Li H, Zhang Y, Yao S. A dual-signal colorimetric and ratiometric fluorescent nanoprobe for enzymatic determination of uric acid by using silicon nanoparticles. Mikrochim Acta 2019; 186:754. [DOI: 10.1007/s00604-019-3862-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 09/19/2019] [Indexed: 02/07/2023]
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30
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Trentanni Hansen GJ, Almonacid J, Albertengo L, Rodriguez MS, Di Anibal C, Delrieux C. NIR-based Sudan I to IV and Para-Red food adulterants screening. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:1163-1172. [DOI: 10.1080/19440049.2019.1619940] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | | | - Liliana Albertengo
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Bahía Blanca, Argentina
| | - María Susana Rodriguez
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Bahía Blanca, Argentina
| | - Carolina Di Anibal
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Bahía Blanca, Argentina
| | - Claudio Delrieux
- Departamento de Ing. Eléctrica y Computadoras, Universidad Nacional del Sur (UNS) – CONICET, Bahía Blanca, Argentina
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31
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Sheng Y, Cao T, Xiao Y, Zhang X, Wang S, Liu Z. A label-free ratiometric fluorescence nanoprobe for ascorbic acid based on redox-modulated dual-emission signals. Analyst 2019; 144:3511-3517. [PMID: 31070608 DOI: 10.1039/c9an00288j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we constructed a label-free ratiometric fluorescence nanoprobe for ascorbic acid (AA) on the basis of the change in dual-emission signals by the specific reaction between cobalt oxyhydroxide (CoOOH) and AA. CoOOH nanoflakes were used as the recognition unit while polymer dots (PFO dots) and gold nanoclusters (AuNCs) served as luminescent units of the nanoprobe. After electrostatic assembly of PFO dots and AuNCs on the surface of CoOOH nanoflakes, the energy transfer between the PFO dots and CoOOH could occur and thereby quench the fluorescence of the PFO dots. When AA was present, CoOOH nanoflakes were reduced to Co2+, resulting in a recovery of the fluorescence of the PFO dots. In the meantime, the generated Co2+ could combine with the surface ligands of AuNCs, accompanied by a reduction in the luminescence intensity of the AuNCs. Therefore, the fluorescence intensity ratio of PFO dots to AuNCs would be related to the concentration of AA. The nanoprobe enabled highly sensitive analysis of AA with a detection limit of 1.9 μM and showed great performance in human serum samples and living cells. This report may not only endow a CoOOH-based nanoprobe with improved ability but also offer a novel strategy for the construction of ratiometric nanoprobes for AA and have potential applications in research into and clinical diagnosis of AA-related diseases.
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Affiliation(s)
- Yuhao Sheng
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
| | - Tingwei Cao
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
| | - Yan Xiao
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
| | - Xiuhua Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
| | - Shengfu Wang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
| | - Zhihong Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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32
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Wang P, Li H, Hassan MM, Guo Z, Zhang ZZ, Chen Q. Fabricating an Acetylcholinesterase Modulated UCNPs-Cu 2+ Fluorescence Biosensor for Ultrasensitive Detection of Organophosphorus Pesticides-Diazinon in Food. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:4071-4079. [PMID: 30888170 DOI: 10.1021/acs.jafc.8b07201] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this study, a highly sensitive upconversion fluorescence (FL) biosensor was developed for the detection of organophosphorus pesticides (OPs) based on an acetylcholinesterase (AChE) modulated FL "off-on-off" strategy. The luminescence of synthesized UCNPs could be quenched strongly by Cu2+ due to an energy transfer effect. Upon addition of AChE and acetylthiocholine (ATCh), the enzymatic hydrolysate (thiocholine) could seize Cu2+ from UCNPs-Cu2+ mixture, resulting in the quenched FL triggered on. OPs could irreversibly impede the activity of AChE, which caused the formation of thiocholine to decrease, thus, reduced the recovery of FL. Under the optimum conditions, a linear detection range from 0.1 to 50 ng/mL was achieved for the representative OPs (diazinon) with LOD of 0.05 ng/mL. Furthermore, the ability of the biosensor to detect OPs was also confirmed in adulterated environmental and agricultural samples. In validation analysis, the proposed sensor showed satisfactory results ( p > 0.05) with GC-MS.
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Affiliation(s)
- Pingyue Wang
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Huanhuan Li
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Md Mehedi Hassan
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Zhiming Guo
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Zheng-Zhu Zhang
- State Key Laboratory of Tea Plant Biology and Utilization , Anhui Agricultural University , Hefei 230036 , China
| | - Quansheng Chen
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
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Joye IJ, Corradini MG, Duizer LM, Bohrer BM, LaPointe G, Farber JM, Spagnuolo PA, Rogers MA. A comprehensive perspective of food nanomaterials. ADVANCES IN FOOD AND NUTRITION RESEARCH 2019; 88:1-45. [PMID: 31151722 DOI: 10.1016/bs.afnr.2019.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nanotechnology is a rapidly developing toolbox that provides solutions to numerous challenges in the food industry and meet public demands for healthier and safer food products. The diversity of nanostructures and their vast, tunable functionality drives their inclusion in food products and packaging materials to improve their nutritional quality through bioactive fortification and probiotics encapsulation, enhance their safety due to their antimicrobial and sensing capabilities and confer novel sensorial properties. In this food nanotechnology state-of-the-art communication, matrix materials with particular focus on food-grade components, existing and novel production techniques, and current and potential applications in the fields of food quality, safety and preservation, nutrient bioaccessibility and digestibility will be detailed. Additionally, a thorough analysis of potential strategies to assess the safety of these novel nanostructures is presented.
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Affiliation(s)
- I J Joye
- Department of Food Science, University of Guelph, Guelph, ON, Canada
| | - M G Corradini
- Arrell Food Institute, University of Guelph, Guelph, ON, Canada
| | - L M Duizer
- Department of Food Science, University of Guelph, Guelph, ON, Canada
| | - B M Bohrer
- Department of Food Science, University of Guelph, Guelph, ON, Canada
| | - G LaPointe
- Department of Food Science, University of Guelph, Guelph, ON, Canada
| | - J M Farber
- Department of Food Science, University of Guelph, Guelph, ON, Canada
| | - P A Spagnuolo
- Department of Food Science, University of Guelph, Guelph, ON, Canada
| | - M A Rogers
- Department of Food Science, University of Guelph, Guelph, ON, Canada.
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Sheth S, Li M, Song Q. New luminescent probe for the selective detection of dopamine based on in situ prepared Ru(II) complex-sodium dodecyl benzyl sulfonate assembly. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.11.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhang J, Zhou R, Tang D, Hou X, Wu P. Optically-active nanocrystals for inner filter effect-based fluorescence sensing: Achieving better spectral overlap. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.11.002] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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36
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Ratiometric fluorescence detection of Cd2+ and Pb2+ by inner filter-based upconversion nanoparticle-dithizone nanosystem. Microchem J 2019. [DOI: 10.1016/j.microc.2018.09.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Simple and sensitive fluorescence sensor for methotrexate detection based on the inner filter effect of N, S co-doped carbon quantum dots. Anal Chim Acta 2019; 1047:179-187. [DOI: 10.1016/j.aca.2018.10.005] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 10/05/2018] [Indexed: 12/11/2022]
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Wu M, Sun L, Miao K, Wu Y, Fan LJ. Detection of Sudan Dyes Based on Inner-Filter Effect with Reusable Conjugated Polymer Fibrous Membranes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8287-8295. [PMID: 29436822 DOI: 10.1021/acsami.8b00164] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Developing effective methods for detecting illegal additives in food or seasoning is of great significance. In this study, a sensing strategy for selective detection of Sudan dyes was designed based on the fluorescence inner-filter effect (IFE) by using poly(phenylenevinylene) (PPV) solid materials in combination with an optimized experimental protocol. Two types of fluorescent solid materials, electrospun fibrous membranes and drop-cast films, were fabricated with PPV as the fluorophore and poly(vinyl alcohol) as the matrix, respectively. Sudan dyes greatly quenched the fluorescence of the membrane and film, whereas other food colorings or possible food ingredients displayed a much smaller or negligible quenching effect. The sensing mechanism was studied, and the selectivity was ascribed to IFE, which requires the overlap between the absorption of the analyte and absorption/emission of the sensing material. The form of materials (membrane or film), the content of PPV, and the cross-linking process did not have much influence on the selectivity and sensitivity, which is consistent with the IFE mechanism and demonstrates the advantage of not requiring strict control of the preparative process. All the cross-linked materials were found to be stable against water/humidity and displayed good reversibility in sensing and can be reused at least for 10 cycles with negligible influence on the sensing performance. A cross-linked membrane was selected for detecting Sudan dyes in chili powder because folding did not affect the mechanical stability of the membrane. Two different protocols were used to pretreat the chili samples, which allowed the detection of Sudan dyes in chili powder as well as the discrimination of Sudan dyes from synthetic food coloring such as allura red. This study provides a facile and cost-effective method for preparing reusable sensing materials for detecting some dyes in commercial foods or food seasonings.
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Affiliation(s)
- Ming Wu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Lijuan Sun
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Kesong Miao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Yingzhong Wu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Li-Juan Fan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
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Chen S, Yu YL, Wang JH. Inner filter effect-based fluorescent sensing systems: A review. Anal Chim Acta 2017; 999:13-26. [PMID: 29254563 DOI: 10.1016/j.aca.2017.10.026] [Citation(s) in RCA: 366] [Impact Index Per Article: 52.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/24/2017] [Accepted: 10/24/2017] [Indexed: 12/28/2022]
Abstract
Inner filter effect (IFE) was previously considered as an error in fluorescence measurement. In recent years, it has been developed as an important non-irradiation energy conversion model of spectroscopic technique and found wide applications in the fields of chemical sensing and biosensing. In comparison with traditional techniques based on forster resonance energy transfer (FRET), the IFE-based fluorescent approach is more flexible and straightforward without the link of absorber with fluorescer. The present review for the first time introduces the state of the art in the progress of the IFE-based fluorescent sensing systems, including sensing strategy, essential conditions, materials option, and their applications for the detection of various target analytes, e.g., ionic species, small molecules, and macromolecules. In addition, the benefits and limitations of the IFE-based fluorescent sensing systems are also critically discussed and highlighted.
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Affiliation(s)
- Shuai Chen
- College of Life and Health Sciences, Northeastern University, Shenyang 110169, China
| | - Yong-Liang Yu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China.
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
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Li Y, Wang A, Bai Y, Wang S. Acriflavine-immobilized eggshell membrane as a new solid-state biosensor for Sudan I-IV detection based on fluorescence resonance energy transfer. Food Chem 2017; 237:966-973. [PMID: 28764093 DOI: 10.1016/j.foodchem.2017.06.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Revised: 05/15/2017] [Accepted: 06/07/2017] [Indexed: 11/16/2022]
Abstract
A novel solid-surface fluorescence biosensor for rapid detection of Sudan I-IV was proposed based on fluorescence resonance energy transfer (FRET). The biosensor was fabricated by immobilizing acriflavine (AY) on the eggshell membrane (ESM) with glutaraldehyde as cross-linking agent. FRET mechanism was demonstrated by using AY and Sudan dyes as donor and acceptor respectively, an efficient energy transfer in the present system was indicated by the sufficient spectral overlap integral (J) and proper Förster critical distance (R0). Under optimum conditions, the fluorescence of the AY-ESM could be efficiently quenched by Sudan I-IV and the corresponding linear range was 0.5-60μM with the detection limits (3σ/slope) of 0.16, 0.26, 0.21 and 0.17μM respectively. Compared to the detection of Sudan dyes in solution-state, the membrane biosensor exhibited advantages of low detection limits, high sensitivity and selectivity, as well as excellent stability. Recovery tests in spiked real samples also achieved satisfactory results.
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Affiliation(s)
- Ying Li
- College of Food Science and Nutritional Engineering, China Agricultural University, 17# Qinghua East Road, Haidian District, Beijing 100083, China.
| | - Anyi Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, 17# Qinghua East Road, Haidian District, Beijing 100083, China.
| | - Yunfei Bai
- Tianjin Entry-Exit Inspection and Quarantine Bureau, 51# 2nd Street, Tianjin Economic & Technological Development Area (TEDA), Tianjin 300457, China.
| | - Shiping Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, 17# Qinghua East Road, Haidian District, Beijing 100083, China.
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Liu Y, Ouyang Q, Li H, Zhang Z, Chen Q. Development of an Inner Filter Effects-Based Upconversion Nanoparticles-Curcumin Nanosystem for the Sensitive Sensing of Fluoride Ion. ACS APPLIED MATERIALS & INTERFACES 2017; 9:18314-18321. [PMID: 28485571 DOI: 10.1021/acsami.7b04978] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
This paper describes a novel ratiometric fluorescence-based sensor for the detection of fluoride ion. Yb3+, Er3+, and Tm3+ codoped NaYF4 upconversion nanoparticles (UCNPs), which can emit fluorescence at 546, 657, 758, and 812 nm under the 980 nm single wavelength excitation, were synthesized, amino-modified and applied as the fluorescent signal indicator. The natural chemical curcumin served as specific recognition element and mixed with UCNPs to make a nanosystem. In this nanosystem, the absorption peak of curcumin shows a bathochromic shift when F- was added, causing an upconversion fluorescence quenching at 546 and 657 nm through inner filter effects (IFE), whereas the upconversion emission at 758 and 812 nm remained unchanged. Thus, the fluorescence ratio I546/I758 was inversely proportional to F- concentration. Meanwhile, the large absorption bathochromic shift also lead to a color change, based on the colorimetric analysis of F- by the naked eye. Under the optimized conditions, the developed UCNPs-curcumin mixed system achieved the colorimetric and ratiometric fluorescence sensing toward F- in the linear range of 25-200 μM and 5-200 μM, with the detection limits as low as 25 μM (ca. 0.48 ppm) and 5 μM (ca. 0.10 ppm), respectively. The developed nanosystem also has high selectivity and antijamming ability. Furthermore, this method showed promising practical applications in spiked real samples (ex., tap water and milk) with recoveries of 79.58% to 134.02% and RSD values in the range of 0.94% to 22.11%, which confirmed its great potential in harmful substance detection.
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Affiliation(s)
- Yan Liu
- School of Food and Biological Engineering, Jiangsu University , Zhenjiang 212013, China
| | - Qin Ouyang
- School of Food and Biological Engineering, Jiangsu University , Zhenjiang 212013, China
| | - Huanhuan Li
- School of Food and Biological Engineering, Jiangsu University , Zhenjiang 212013, China
| | - Zhengzhu Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , Hefei 210036, China
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University , Zhenjiang 212013, China
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University , Hefei 210036, China
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42
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You H, Hua X, Feng L, Sun N, Rui Q, Wang L, Wang M. Competitive immunoassay for imidaclothiz using upconversion nanoparticles and gold nanoparticles as labels. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2097-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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43
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Upconversion ratiometric fluorescence and colorimetric dual-readout assay for uric acid. Biosens Bioelectron 2016; 86:664-670. [DOI: 10.1016/j.bios.2016.07.055] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/15/2016] [Accepted: 07/16/2016] [Indexed: 12/20/2022]
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Wang L, Bi Y, Hou J, Li H, Xu Y, Wang B, Ding H, Ding L. Facile, green and clean one-step synthesis of carbon dots from wool: Application as a sensor for glyphosate detection based on the inner filter effect. Talanta 2016; 160:268-275. [PMID: 27591613 DOI: 10.1016/j.talanta.2016.07.020] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 07/01/2016] [Accepted: 07/08/2016] [Indexed: 10/21/2022]
Abstract
In this work, we reported a green route for the fabrication of fluorescent carbon dots (CDs). Wool, a kind of nontoxic and natural raw material, was chosen as the precursor to prepare CDs via a one-step microwave-assisted pyrolysis process. Compared with previously reported methods for preparation of CDs based on biomass materials, this method was simple, facile and free of any additives, such as acids, bases, or salts, which avoid the complicated post-treatment process to purify the CDs. The CDs have a high quantum yield (16.3%) and their fluorescence could be quenched by silver nanoparticles (AgNPs) based on inner filter effect (IFE). The presence of glyphosate could induce the aggregation of AgNPs and thus result in the fluorescence recovery of the quenched CDs. Based on this phenomenon, we constructed a fluorescence system (CDs/AgNPs) for determination of glyphosate. Under the optimized conditions, the fluorescence intensity of the CDs/AgNPs system was proportional to the concentration of glyphosate in the range of 0.025-2.5μgmL(-1), with a detection limit of 12ngmL(-1). Furthermore, the established method has been successfully used for glyphosate detection in the cereal samples with satisfactory results.
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Affiliation(s)
- Long Wang
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, PR China
| | - Yidan Bi
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, PR China
| | - Juan Hou
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, PR China
| | - Huiyu Li
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, PR China
| | - Yuan Xu
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, PR China
| | - Bo Wang
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, PR China
| | - Hong Ding
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Lan Ding
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, PR China.
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Sivasankaran U, Cyriac ST, Menon S, Kumar KG. Fluorescence Turn off Sensor for Brilliant Blue FCF- an Approach Based on Inner Filter Effect. J Fluoresc 2016; 27:69-77. [PMID: 27639570 DOI: 10.1007/s10895-016-1935-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 09/07/2016] [Indexed: 10/21/2022]
Abstract
A nanosensor with fluorometric readout based on L-cysteine capped cadmium sulphide quantum dots for discriminative detection and determination of Brilliant blue FCF (BB) (in 0.5 M Tris buffer solution of pH 9.5) over other synthetic food colourants is developed. Mechanism of the nanosensor is based on inner filter effect (IFE). The addition of BB into quantum dot solution might induce the quenching of fluorescence. The nanosensor described in this report reveals its simplicity and flexibility due to less laborious and more cost-effective synthesis. The developed fluorescence sensor showed excellent selectivity towards BB, and allows the detection as low as 3.50 × 10-7 M. The developed sensor exhibited a linear concentration range of 4.00 × 10-5 to 4.50 × 10-6 M. More importantly, the proposed sensor exhibit sensitive responses toward BB in food samples such as sports drink and candies, demonstrating its potential in food analysis, which might be significant in food quality control in the future.
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Affiliation(s)
- Unni Sivasankaran
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, 22, India
| | - Soumya T Cyriac
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, 22, India
| | - Shalini Menon
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, 22, India
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