1
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Li K, Jiang H, Wang L, Wang R, Zhang X, Yang L, Jiang X, Song W, Zhao B. A flexible semiconductor SERS substrate by in situ growth of tightly aligned TiO 2 for in situ detection of antibiotic residues. Mikrochim Acta 2024; 191:113. [PMID: 38286863 DOI: 10.1007/s00604-024-06193-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 01/03/2024] [Indexed: 01/31/2024]
Abstract
Semiconductor materials have become a competitive candidate for surface-enhanced Raman scattering (SERS) substrate. However, powdered semiconductors are difficult to execute a fast in situ detection for trace analytes. Here, we developed a new flexible semiconductor SERS substrate by in situ densely growing anatase TiO2 nanoparticles on the surface of cotton fabric through a filtration-hydrothermal method, in which TiO2 exhibits excellent controllability in size and distribution by regulating the ratio of water to alcohol in synthesis and the number of filtration-hydrothermal repetitive cycle. Cotton fabric/TiO2 (Cot/TiO2) substrate exhibits a high SERS activity and excellent spectral repeatability. The developed substrate has an ultra-high stability that can withstand long-term preservation; it can even resist the corrosions of strong acid and alkali, as well as high temperature up to 100 °C and low temperature down to - 20 °C. The flexible substrate can be used to carry out a rapid in situ detection for quinolone antibiotic (enrofloxacin and enoxacin) residues on the fish body surface by using a simple swabbing method, with high quantitative detection potential (up to an order of magnitude of 10-7 M), and even for the simultaneous detection of both drug residues. The flexible substrate also exhibits an excellent recyclability up to 6 recycles in the actual SERS detection.
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Affiliation(s)
- Kaiwei Li
- College of Pharmacy, Jiamusi University, Jiamusi, 154007, China
| | - Han Jiang
- College of Pharmacy, Jiamusi University, Jiamusi, 154007, China
| | - Liying Wang
- College of Pharmacy, Jiamusi University, Jiamusi, 154007, China
| | - Rui Wang
- College of Pharmacy, Jiamusi University, Jiamusi, 154007, China
| | - Xuewei Zhang
- College of Pharmacy, Jiamusi University, Jiamusi, 154007, China
| | - Libin Yang
- College of Pharmacy, Jiamusi University, Jiamusi, 154007, China.
- College of Chemistry and Chemical Engineering, Technology Innovation Center of Industrial Hemp for State Market Regulation, Qiqihar University, Qiqihar, 161006, China.
| | - Xin Jiang
- College of Pharmacy, Jiamusi University, Jiamusi, 154007, China.
- College of Chemistry and Chemical Engineering, Technology Innovation Center of Industrial Hemp for State Market Regulation, Qiqihar University, Qiqihar, 161006, China.
| | - Wei Song
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, China
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, China.
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2
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Martínez-Moro R, Del Pozo M, Casero E, Petit-Domínguez MD, Quintana C. MoS 2 quantum dots-based optical sensing platform for the analysis of synthetic colorants. Application to quinoline yellow determination. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123042. [PMID: 37356389 DOI: 10.1016/j.saa.2023.123042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 06/17/2023] [Indexed: 06/27/2023]
Abstract
In this work, a novel fluorescence sensor has been designed to solve the actual need of new fast and inexpensive sensing platforms for the analysis of synthetic colorants. It is based on MoS2 quantum dots obtained by a hydrothermal method and incorporated as fluorophore into the matrix of PVC membranes, which are deposited on quartz substrates by spin-coating. It was proven, as in these conditions, MoS2 quantum dots maintain the fluorescent properties that they present in solution. Experiments carried out in solution displayed a maximum emission when they were excited under 310 nm. This initial fluorescence decreases linearly in presence of increasing concentrations of various synthetic colorants namely quinoline yellow, tartrazine, sunset yellow, allura red, ponceau 4R and carmoisine. The two possible mechanisms that can explain this quenching effect, colorants absorbing photons emitted by quantum dots and/or competing with the nanomaterial for photons coming from the excitation source, were evaluated. The most pronounced effect was observed with quinoline yellow, as a result of a mixed mechanism. The optimized methodology developed for the determination of quinoline yellow showed a linear concentration range between 5.4 and 55.0 µg with a limit of detection of 1.6 µg. The sensor was applied to the determination of quinoline yellow in a food colour paste obtaining results in good agreement with those obtained by HPLC-UV-vis measurements.
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Affiliation(s)
- Rut Martínez-Moro
- Departamento de Química Analítica y Análisis Instrumental. Facultad de Ciencias. c/ Francisco Tomás y Valiente, N°7. Campus de Excelencia de la Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - María Del Pozo
- Departamento de Química Analítica y Análisis Instrumental. Facultad de Ciencias. c/ Francisco Tomás y Valiente, N°7. Campus de Excelencia de la Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Elena Casero
- Departamento de Química Analítica y Análisis Instrumental. Facultad de Ciencias. c/ Francisco Tomás y Valiente, N°7. Campus de Excelencia de la Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - María Dolores Petit-Domínguez
- Departamento de Química Analítica y Análisis Instrumental. Facultad de Ciencias. c/ Francisco Tomás y Valiente, N°7. Campus de Excelencia de la Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - Carmen Quintana
- Departamento de Química Analítica y Análisis Instrumental. Facultad de Ciencias. c/ Francisco Tomás y Valiente, N°7. Campus de Excelencia de la Universidad Autónoma de Madrid, 28049 Madrid, Spain.
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3
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Zeng P, Zhang H, Guan Q, Zhang Q, Yan X, Yu L, Duan L, Wang C. Constructing a 3D interconnected network of Ag nanostructures for high-performance SERS detection of food coloring agents. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:6088-6096. [PMID: 37933465 DOI: 10.1039/d3ay01515g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
The design and preparation of various effective three-dimensional (3D) silver nanostructures is a frontier area of research in the field of surface-enhanced Raman scattering (SERS). This paper demonstrates a simple and novel method for the preparation of a substrate, whose surface was covered by a 3D interconnected network of Ag nanostructures, and the resulting network structure surface is free of organic contaminants. The EDS measurements confirm the metallic nature of the formed 3D Ag nanonetwork substrate. Additionally, the influence of experimental parameters on the morphology of the 3D Ag nanonetwork was also investigated, such as reaction time, hydrofluoric acid concentration, silver nitrate concentration and sodium citrate concentration. The 3D Ag nanonetwork has good uniformity. Importantly, the 3D Ag nanonetwork substrate was used to accurately and reliably detect amaranth (AR) and sunset yellow (SY) in beverages, with the lowest detection limit of 3 and 0.1 μg L-1, respectively. Therefore, this substrate is expected to be a promising candidate for SERS detection and offers attractive potential for a wider range of applications.
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Affiliation(s)
- Pei Zeng
- School of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
| | - Huan Zhang
- School of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
| | - Qi Guan
- School of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
| | - Qianqian Zhang
- School of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
| | - Xianzai Yan
- School of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
| | - Lili Yu
- School of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
| | - Luying Duan
- School of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
| | - Chunrong Wang
- School of Food Science & Engineering, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
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4
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Bhardwaj SK, Deep A, Bhardwaj N, Wangoo N. Recent advancements in nanomaterial based optical detection of food additives: a review. Analyst 2023; 148:5322-5339. [PMID: 37750046 DOI: 10.1039/d3an01317k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Food additives have become a critical component in the food industry. They are employed as preservatives to decelerate the negative effects of environmental and microbial factors on food quality. Currently, food additives are used for a variety of purposes, including colorants, flavor enhancers, nutritional supplements, etc., owing to improvements in the food industry. Since the usage of food additives has increased dramatically, the efficient monitoring of their acceptable levels in food products is quite necessary to mitigate the problems associated with their inappropriate use. The traditional methods used for detecting food additives are generally based on standard spectroscopic and chromatographic techniques. However, these analytical techniques are limited by their high instrumentation cost and time-consuming procedures. The emerging field of nanotechnology has enabled the development of highly sensitive and specific sensors to analyze food additives in a rapid manner. The current article emphasizes the need to detect various food additives owing to their potential negative effects on humans, animals, and the environment. In this article, the role of nanomaterials in the optical sensing of food additives has been discussed owing to their high accuracy, ease-of-use, and excellent sensitivity. The applications of nanosensors for the detection of various food additives have been elaborated with examples. The current article will assist policymakers in developing new rules and regulations to mitigate the adverse effects of toxic food additives on humans and the environment. In addition, the prospects of nanosensors for the optical detection of food additives at a commercial scale have been discussed to combat their irrational use in the food industry.
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Affiliation(s)
- Sanjeev K Bhardwaj
- Department of Applied Sciences, University Institute of Engineering Technology (UIET), Panjab University, Chandigarh, India.
| | - Akash Deep
- Energy and Environment unit, Institute of Nanoscience and Technology, Mohali, India.
| | - Neha Bhardwaj
- Energy and Environment unit, Institute of Nanoscience and Technology, Mohali, India.
| | - Nishima Wangoo
- Department of Applied Sciences, University Institute of Engineering Technology (UIET), Panjab University, Chandigarh, India.
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5
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Guo ZY, Zhang C, Chen LM, Zeng MH, Yao QH, Ye TX, Luo HZ, Chen XM, Chen X. Design of competition nanoreactor with shell-isolated colloidal plasmonic nanomaterials for quantitative sensor platform. Talanta 2023; 265:124861. [PMID: 37429252 DOI: 10.1016/j.talanta.2023.124861] [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: 03/01/2023] [Revised: 06/05/2023] [Accepted: 06/20/2023] [Indexed: 07/12/2023]
Abstract
Shell-isolated colloid plasmonic nanomaterials-based nanoreactor is a well-established platform widely applied in catalyst or Surface Enhanced Raman Scattering (SERS) sensors. The potentials versatility of nanoreactor platform is mainly implemented by the well-defined and tailorable structure of colloid plasmonic nanomaterials. Currently, a competitive conjugative-mediated nanoreactor is introduced to determine glucose with SERS. Glucose-conjugating nanoreactor, as convertors of the sensors, are constructed by coordinated deposition colloidal gold nanoparticles with sodium nitroprusside framework (Au@SNF) and covalently bonded 4-mercaptopyridine (4-Mpy) with self-assembly strategy. The nanoreactor contained the signal-amplifier Au@SNF NPs, conjugative-mediated signal receiver 4-Mpy, and signal internal standard molecular CN-. In addition to well-defined morphology and functionality, conjugative-mediated and internal standards method are also employed to benefit the nanoreactor. The two-parameter strategy significantly improves the signal indication and correction. Using this proposed platform, the competitive-mediated nanoreactor provides a quantitative SERS detection of glucose, and extends the applicability of SERS in more complicated and reproducibility analysis. Meanwhile, the nanoreactor based sensors also exhibited better properties to detect glucose in various food samples and bio-samples which provided strongly appliance for glucose sensors.
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Affiliation(s)
- Zhi-Yong Guo
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China; Xiamen Environmental Monitoring Engineering Technology Research Center, China
| | - Chen Zhang
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China; Xiamen Environmental Monitoring Engineering Technology Research Center, China
| | - Lin-Min Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Mei-Huang Zeng
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Qiu-Hong Yao
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China
| | - Ting-Xiu Ye
- College of Pharmacy, Xiamen Medicine College, Xiamen, 361005, China
| | - He-Zhou Luo
- SEPL Quality Inspection Technology Service Co., Ltd., Fujian, Fuzhou, 350000, China
| | - Xiao-Mei Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Xi Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China.
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6
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Lin J, Lin D, Qiu S, Huang Z, Liu F, Huang W, Xu Y, Zhang X, Feng S. Shifted-excitation Raman difference spectroscopy for improving in vivo detection of nasopharyngeal carcinoma. Talanta 2023; 257:124330. [PMID: 36773510 DOI: 10.1016/j.talanta.2023.124330] [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: 12/13/2022] [Revised: 02/03/2023] [Accepted: 02/05/2023] [Indexed: 02/10/2023]
Abstract
A strong fluorescence background is one of the common interference factors of Raman spectroscopic analysis in biological tissue. This study developed an endoscopic shifted-excitation Raman difference spectroscopy (SERDS) system for real-time in vivo detection of nasopharyngeal carcinoma (NPC) for the first time. Owing to the use of the SERDS method, the high-quality Raman signals of nasopharyngeal tissue could be well extracted and characterized from the complex raw spectra by removing the fluorescence interference signals. Significant spectral differences relating to proteins, phospholipids, glucose, and DNA were found between 42 NPC and 42 normal tissue sites. Using linear discriminant analysis, the diagnostic accuracy of SERDS for NPC detection was 100%, which was much higher than that of raw Raman spectroscopy (75.0%), showing the great potential of SERDS for improving the accurate in vivo detection of NPC.
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Affiliation(s)
- Jinyong Lin
- Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, 350014, China; Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China
| | - Duo Lin
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China
| | - Sufang Qiu
- Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, 350014, China
| | - Zufang Huang
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China.
| | - Feng Liu
- Simple & Smart Instrument (Beijing) Co.,Ltd, China
| | - Wei Huang
- Department of Forensic Science, Fujian Police College, Fuzhou, 350007, PR China
| | - Yuanji Xu
- Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, 350014, China
| | - Xianzeng Zhang
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China.
| | - Shangyuan Feng
- Key Laboratory of OptoElectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, 350007, China.
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7
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Ye ZH, Chen XT, Zhu HY, Liu XQ, Deng WH, Song W, Li DX, Hou RY, Cai HM, Peng CY. Aggregating-agent-assisted surface-enhanced Raman spectroscopy–based detection of acrylamide in fried foods: A case study with potato chips. Food Chem 2023; 403:134377. [DOI: 10.1016/j.foodchem.2022.134377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/31/2022] [Accepted: 09/19/2022] [Indexed: 10/14/2022]
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8
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Wang S, Wang H, Ding Y, Li W, Gao H, Ding Z, Lin P, Gu J, Ye M, Yan T, Chen H, Ye J. Filter paper- and smartphone-based point-of-care tests for rapid and reliable detection of artificial food colorants. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Novel ratiometric electrochemical sensing platform with dual-functional poly-dopamine and NiS@HCS signal amplification for sunset yellow detection in foods. Food Chem 2022; 390:133193. [DOI: 10.1016/j.foodchem.2022.133193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 04/11/2022] [Accepted: 05/08/2022] [Indexed: 11/19/2022]
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10
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Calam TT, Çakıcı GT. Optimization of square wave voltammetry parameters by response surface methodology for the determination of Sunset yellow using an electrochemical sensor based on Purpald®. Food Chem 2022; 404:134412. [DOI: 10.1016/j.foodchem.2022.134412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/21/2022] [Accepted: 09/23/2022] [Indexed: 01/10/2023]
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11
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Li L, Cui Q, Li M, Li T, Cao S, Dong S, Wang Y, Dai Q, Ning J. Rapid detection of multiple colorant adulteration in Keemun black tea based on hemp spherical AgNPs-SERS. Food Chem 2022; 398:133841. [DOI: 10.1016/j.foodchem.2022.133841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 10/16/2022]
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12
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Atta S, Watcharawittayakul T, Vo-Dinh T. Ultra-high SERS detection of consumable coloring agents using plasmonic gold nanostars with high aspect-ratio spikes. Analyst 2022; 147:3340-3349. [PMID: 35762677 PMCID: PMC9725038 DOI: 10.1039/d2an00794k] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Solution-based SERS detection by using a portable Raman instrument has emerged as an important tool due to its simplicity, and flexibility for rapid and on-site screening of analyte molecules. However, this method has several shortcomings, including poor sensitivity especially for weak-affinity analyte molecules, where there is no close contact between the plasmonic metal surface and analyte molecule. Examples of weak-affinity molecules include pigment molecules that are commonly used as a consumable coloring agent, such as allura red (AR), and sunset yellow (SY). As high consumption of colorant agents has been shown to cause adverse effects on human health, there is a strong need to develop a simple and practical sensing system with high sensitivity for these agents. Here we present a novel, highly sensitive solution-based SERS detection method for AR, and SY by using CTAC capped gold nanostars (GNS) having different aspect ratios (GNS-2, GNS-4, and GNS-5) without utilizing any aggregating agents which can enhance SERS signal however it reduces batch to batch reproducibility. The influence of the aspect ratio of GNS on SERS properties was investigated. We have achieved a limit of detection (LOD) of AR and SY as low as 0.5 and 1 ppb, respectively by using GNS-5 with the advantages of minimal sample preparation by just mixing the analyte solution into a well plate containing GNS solution. In addition, excellent colloidal stability and reproducibility have further enhanced the applicability in real-world samples. Overall, our results evidence that the solution-based SERS detection platform using high aspect-ratio GNS can be applied for practical application to detect pigment molecules in real samples with satisfactory results.
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Affiliation(s)
- Supriya Atta
- Fitzpatrick Institute for Photonics, Durham, NC 27708, USA.
- Department of Biomedical Engineering, Durham, NC 27708, USA
| | - Tongchatra Watcharawittayakul
- Fitzpatrick Institute for Photonics, Durham, NC 27708, USA.
- Department of Biomedical Engineering, Durham, NC 27708, USA
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Durham, NC 27708, USA.
- Department of Biomedical Engineering, Durham, NC 27708, USA
- Department of Chemistry, Duke University, Durham, NC 27708, USA
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13
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Tripathi MN, Singh K, Yadav U, Srivastava RR, Gangwar M, Nath G, Saxena PS, Srivastava A. SERS based rapid and ultrasensitive detection of Japanese Encephalitis Virus. Antiviral Res 2022; 205:105382. [PMID: 35835290 DOI: 10.1016/j.antiviral.2022.105382] [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: 04/11/2022] [Revised: 07/01/2022] [Accepted: 07/07/2022] [Indexed: 12/22/2022]
Abstract
Japanese encephalitis (JE) is a mosquito-borne flavivirus infection named Japanese Encephalitis Virus (JEV), prevalent in Asia-pacific countries, requires an accurate and rapid diagnosis to contain the outbreak of the disease. In cases of low viral load in early-stage infections, this task becomes difficult. Therefore, we have developed a surface-enhanced Raman spectroscopy (SERS) based biosensor for rapid, sensitive, and early-stage detection of JE antigen. In this work, silver nanoparticles were deposited over a glass coverslip and used as a substrate for designing the sensing platform. Silver Nanoparticles have good metallic properties and plasmon activity. Therefore, it amplifies the Raman signals and provides a suitable surface for the SERS substrate. The developed platform has been used for the detection of the Japanese encephalitis virus (JEV). The fabricated sensor shows a linear response from 5ng/mL to 80 ng/mL with a limit of detection (LoD) of ∼7.6 ng/mL. Therefore, this method could be a significant addition to the diagnostic modalities for early, sensitive, and specific diagnoses of JE antigen even at the nanogram level.
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Affiliation(s)
- Manish Nath Tripathi
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Kirti Singh
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Umakant Yadav
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Rohit Ranjan Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Mayank Gangwar
- Viral Research and Diagnostic Laboratory, Department of Microbiology, Institute of Medical Science, Banaras Hindu University, Varanasi, 221005, India
| | - Gopal Nath
- Viral Research and Diagnostic Laboratory, Department of Microbiology, Institute of Medical Science, Banaras Hindu University, Varanasi, 221005, India
| | - Preeti S Saxena
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Anchal Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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14
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Anh NH, Doan MQ, Dinh NX, Huy TQ, Tri DQ, Ngoc Loan LT, Van Hao B, Le AT. Gold nanoparticle-based optical nanosensors for food and health safety monitoring: recent advances and future perspectives. RSC Adv 2022; 12:10950-10988. [PMID: 35425077 PMCID: PMC8988175 DOI: 10.1039/d1ra08311b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 03/29/2022] [Indexed: 12/14/2022] Open
Abstract
Modern society has been facing serious health-related problems including food safety, diseases and illness. Hence, it is urgent to develop analysis methods for the detection and control of food contaminants, disease biomarkers and pathogens. As the traditional instrumental methods have several disadvantages, including being time consuming, and having high cost and laborious procedures, optical nanosensors have emerged as promising alternative or complementary approaches to those traditional ones. With the advantages of simple preparation, high surface-to-volume ratio, excellent biocompatibility, and especially, unique optical properties, gold nanoparticles (AuNPs) have been demonstrated as excellent transducers for optical sensing systems. Herein, we provide an overview of the synthesis of AuNPs and their excellent optical properties that are ideal for the development of optical nanosensors based on local surface plasmon resonance (LSPR), colorimetry, fluorescence resonance energy transfer (FRET), and surface-enhanced Raman scattering (SERS) phenomena. We also review the sensing strategies and their mechanisms, as well as summarizing the recent advances in the monitoring of food contaminants, disease biomarkers and pathogens using developed AuNP-based optical nanosensors in the past seven years (2015-now). Furthermore, trends and challenges in the application of these nanosensors in the determination of those analytes are discussed to suggest possible directions for future developments.
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Affiliation(s)
- Nguyen Ha Anh
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam
| | - Mai Quan Doan
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam
| | - Ngo Xuan Dinh
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam
| | - Tran Quang Huy
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam .,Faculty of Electric and Electronics, Phenikaa University Hanoi 12116 Vietnam
| | - Doan Quang Tri
- Advanced Institute for Science and Technology (AIST), Hanoi University of Science and Technology (HUST) 1st Dai Co Viet Road Hanoi Vietnam
| | - Le Thi Ngoc Loan
- Faculty of Natural Sciences, Quy Nhon University Quy Nhon 55113 Vietnam
| | - Bui Van Hao
- Faculty of Materials Science and Engineering, Phenikaa University Hanoi 12116
| | - Anh-Tuan Le
- Phenikaa University Nano Institute (PHENA), Phenikaa University Hanoi 12116 Vietnam .,Faculty of Materials Science and Engineering, Phenikaa University Hanoi 12116
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15
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Zhang K, Zeng H, Feng J, Liu Z, Chu Z, Jin W. Screen-printing of core-shell Mn 3O 4@C nanocubes based sensing microchip performing ultrasensitive recognition of allura red. Food Chem Toxicol 2022; 162:112908. [PMID: 35271983 DOI: 10.1016/j.fct.2022.112908] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/22/2022] [Accepted: 03/05/2022] [Indexed: 12/25/2022]
Abstract
Allura red (AR) is a member of azo dyes is commonly used as an additive in foods and soft drinks. However, due to the special harm of the azo structure to the human body, the dosage control of AR becomes particularly necessary. The present detection methods are time-consuming, expensive and complicated. In order to address the above issues, a core-shell nanocubes constructed sensor has been developed to determine the ultrawide detection range and selective recognition of AR with a long-term reusability. The core-shell architecture is composed of carbon material of 12.64 nm thickness covering 600 nm Mn3O4 nanocube. This nanocomposite combines the advantages of Mn3O4@C, possessing high electrocatalysis and chemical stability. As confirmed in using sports drinks as real samples, the as-prepared AR sensor exhibites excellent selectivity with an ultra-wide linear range from 0.1 to 1748.4 μM, and meanwhile, this sensor can also meet the requirements of remarkable anti-interference and reusability over 30 days.
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Affiliation(s)
- Ke Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, PR China
| | - Hui Zeng
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, PR China
| | - Jingyu Feng
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, PR China
| | - Zhengkun Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, PR China
| | - Zhenyu Chu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, PR China.
| | - Wanqin Jin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, PR China
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16
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Roach L, Coletta PL, Critchley K, Evans SD. Controlling the Optical Properties of Gold Nanorods in One-Pot Syntheses. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:3235-3243. [PMID: 35432690 PMCID: PMC9007536 DOI: 10.1021/acs.jpcc.1c10447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/17/2022] [Indexed: 05/04/2023]
Abstract
We present the characterization of the CTAB-oleate controlled synthesis of gold nanorods (AuNRs). Concentrations of key compounds in the synthetic system were varied in the presence of oleate, including HCl, borohydride, silver nitrate, and ascorbic acid. The longitudinal surface plasmon resonance peak was sensitive to changes in all concentrations. Reducing the concentration of Ag ions below 66 μM led to slower reaction kinetics and incomplete Au reduction. Variation of the ascorbic acid concentration revealed that oleate is responsible for around 44% of reduction of Au3+ to Au+ before nucleation in these experiments. Increasing the oleate concentration significantly slows the growth kinetics and leads to much longer synthesis times of above 12 h for reaction completion. These observations will enable the design of better methods of synthesizing of AuNRs using binary surfactants.
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Affiliation(s)
- Lucien Roach
- School
of Physics and Astronomy, University of
Leeds, Leeds LS2 9JT, U.K.
| | - P. Louise Coletta
- Leeds
Institute for Medical Research, University
of Leeds, Leeds LS2 9JT, U.K.
| | - Kevin Critchley
- School
of Physics and Astronomy, University of
Leeds, Leeds LS2 9JT, U.K.
| | - Stephen D. Evans
- School
of Physics and Astronomy, University of
Leeds, Leeds LS2 9JT, U.K.
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17
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Differential surface partitioning for an ultrasensitive solid-state SERS sensor and its application to food colorant analysis. Food Chem 2022; 383:132415. [PMID: 35180601 DOI: 10.1016/j.foodchem.2022.132415] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 01/22/2022] [Accepted: 02/07/2022] [Indexed: 02/03/2023]
Abstract
Solid-state SERS sensors are desirable point-of-care tools due to their portability. However, the level of SERS sensitivity achieved in liquid phase is rarely duplicated in the solid phase. We report herein the fabrication of a SERS sensor using alumina beads as the solid support and demonstrate its high SERS sensitivity with the model analyte 4-aminophenyl disulfide (4-APDS). The key to sensitivity is a hydrophilic-hydrophobic surface gradient constructed by sequentially coating with the surfactant cetyltrimethylammonium bromide and fluorous 1H,1H,2H,2H-perfluorooctyltriethoxysilane. The surface gradient, together with chloride etching, allows the detection of 4-APDS at the low concentration of 10-15 M. The practicality of the sensor beads is evidenced by successfully tracking the SERS fingerprints of five food colorant standards in the SERS spectra of a popular candy product. These SERS sensor beads are easy to prepare, convenient to use, and highly responsive as a SERS platform for the analysis of colorants.
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18
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Liu L, Mi Z, Huo X, Yuan L, Bao Y, Liu Z, Feng F. A label-free fluorescence nanosensor based on nitrogen and phosphorus co-doped carbon quantum dots for ultra-sensitive detection of new coccine in food samples. Food Chem 2022; 368:130829. [PMID: 34411858 DOI: 10.1016/j.foodchem.2021.130829] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 08/06/2021] [Accepted: 08/06/2021] [Indexed: 01/22/2023]
Abstract
In this paper, an innovative method for the sensitive detection of new coccine using N, P-doped carbon quantum dots (N,P-CQDs) as fluorescent nanosensor is reported for the first time. The sensing mechanism is based on the fluorescence quenching of N,P-CQDs by new coccine through inner filter effect (IFE). N,P-CQDs were prepared by simple hydrothermal treatment of citric acid, phosphoric acid and ethylenediamine. Under the optimal conditions, the new coccine has two good linear responses in the concentration range of 0.2-100 and 100-200 μM, and the detection limits are as low as 24.8 and 9.4 nM, respectively. Our developed nanosensor has been successfully used for the determination of new coccine in food samples with good precision and high accuracy. This work highlights the economic, rapid, simple, selective and ultra-sensitive for new coccine detection, and opens up a new way for the monitoring of new coccine in actual food samples.
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Affiliation(s)
- Lizhen Liu
- Shanxi Datong University, Datong 037009, PR China
| | - Zhi Mi
- Shanxi Datong University, Datong 037009, PR China.
| | - Xingyan Huo
- Shanxi Normal University, Linfen 041004, PR China
| | - Lin Yuan
- Shanxi Datong University, Datong 037009, PR China
| | - Yayan Bao
- Shanxi Datong University, Datong 037009, PR China
| | - Zhixiong Liu
- Shanxi Datong University, Datong 037009, PR China
| | - Feng Feng
- Shanxi Datong University, Datong 037009, PR China.
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19
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Tian X, Fan Q, Guo J, Yu Q, Xu L, Kong X. Surface-enhanced Raman scattering of flexible cotton fiber-Ag for rapid adsorption and detection of malachite green in fish. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 263:120174. [PMID: 34284280 DOI: 10.1016/j.saa.2021.120174] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/30/2021] [Accepted: 07/08/2021] [Indexed: 06/13/2023]
Abstract
The residual of malachite green (MG) in fish is one of the major food safety concerns for consumers. It is important to develop simple and instant analytical methods to identify MG residues in fish. We fabricated flexible cotton surface-enhanced Raman scattering substrate, which offers good flexibility, uniformity and excellent adsorption capability. The UV-vis DRS spectra, transmission electron microscopy and scanning electron elemental mapping images shown that the Ag NPs were closely packed on the surface of cotton fiber. The adsorption feature of cotton fiber could adsorb MG from solution and surface of fish. The Quick Easy Cheap Effective Rugged and Safe (QuEChERS) sample preparation method was used to adsorb MG in fish for SERS sensing. The limit of detection of MG in fish using this developed method was as low as 0.05 ppm. The QuEChERS-SERS analysis method exhibits the capability for multiplex detecting mixture of MG and Dimetridazole at different ratios (5 ppm, 1/400 and 1/4000) from fish. The results indicated that the cotton fiber-Ag composite was suitable employed as SERS substrate for simple and instant detecting trace contaminants in food.
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Affiliation(s)
- Xiaoran Tian
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, PR China
| | - Qinzhen Fan
- College of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, PR China.
| | - Jiaqi Guo
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources and Joint International Research Lab of Lignocellulosic Functional Materials, Nanjing Forestry University, Nanjing 210037, PR China
| | - Qian Yu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, PR China
| | - Lingzi Xu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, PR China
| | - Xianming Kong
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, Liaoning 113001, PR China.
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20
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Ternary NiO/Ag/reduced graphene oxide nanocomposites as, a sensitive electrochemical sensor for nanomolarity detection of sunset yellow in soft drinks. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2021.104136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Constantin E, Varasteanu P, Mihalache I, Craciun G, Mitran RA, Popescu M, Boldeiu A, Simion M. SPR detection of protein enhanced by seedless synthesized gold nanorods. Biophys Chem 2021; 279:106691. [PMID: 34600311 DOI: 10.1016/j.bpc.2021.106691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 09/16/2021] [Accepted: 09/21/2021] [Indexed: 10/20/2022]
Abstract
Surface plasmon resonance (SPR) is a label-free, real-time bio-sensing technique with high potential in the diagnostic area, especially when a signal amplification strategy is used to improve the detection limit. We report here a simple method for enhancing the detection limit of bovine serum albumin (BSA), by attaching gold nanorods (AuNRs). AuNRs were obtained by a seedless synthesis technique and characterized using scanning electron microscopy (SEM), UV-VIS spectroscopy, FT-IR spectroscopy and dynamic light scattering (DLS). Finite element method (FEM) simulations were employed to explore the enhancement of the SPR signal by adding AuNRs on the SPR sensor's metallic layer. SPR spectroscopy was used to analyze the changes in the refractive index brought by the immobilization of unconjugated BSA and BSA modified with AuNRs. The results confirmed that the AuNRs conjugated with the protein increase the SPR signal ~ 10 times, leading to a limit of detection of 1.081 × 10-8 M (0.713 μg/mL).
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Affiliation(s)
- Elena Constantin
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A Erou Iancu Nicolae Street, 077190 Bucharest, Romania
| | - Pericle Varasteanu
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A Erou Iancu Nicolae Street, 077190 Bucharest, Romania; Faculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Magurele, Romania
| | - Iuliana Mihalache
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A Erou Iancu Nicolae Street, 077190 Bucharest, Romania
| | - Gabriel Craciun
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A Erou Iancu Nicolae Street, 077190 Bucharest, Romania
| | - Raul-Augustin Mitran
- "Ilie Murgulescu" Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Indepedenței, Bucharest 060021, Romania
| | - Melania Popescu
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A Erou Iancu Nicolae Street, 077190 Bucharest, Romania.
| | - Adina Boldeiu
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A Erou Iancu Nicolae Street, 077190 Bucharest, Romania.
| | - Monica Simion
- National Institute for Research and Development in Microtechnologies - IMT Bucharest, 126A Erou Iancu Nicolae Street, 077190 Bucharest, Romania.
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22
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Zhang Y, Huang Y, Song Y, Miao J, Lai K. Effects of aggregating agents on the analysis of histamine in squid muscle via surface-enhanced Raman scattering. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-01037-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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23
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Amin MU, Zhang R, Li L, You H, Fang J. Solution-Based SERS Detection of Weak Surficial Affinity Molecules Using Cysteamine-Modified Au Bipyramids. Anal Chem 2021; 93:7657-7664. [PMID: 34013734 DOI: 10.1021/acs.analchem.1c00439] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
To achieve ultrasensitive detection of trace targets through solution-based surface-enhanced Raman spectroscopy (SERS), direct adsorption of the target molecules on a SERS-active surface is vital. In this work, cetyltrimethylammonium bromide (CTAB)-capped gold nano-bipyramids (Au BPs) with different aspect ratios (ARs) are prepared and the surface is successfully modified by a simple ligand exchange method. Cysteamine-capped gold nano-bipyramids (cyst-Au BPs) are obtained by means of replacement of CTAB by cysteamine using Au-S covalent bonding and applied in the solution-based SERS detection of different pigment molecules, which always have weak affinity to the gold surface. The hydrogen bonding between the pigment molecule and cysteamine causes the aggregation of Au BPs to generate local electromagnetic field enhancement. The influence of the AR and concentration of Au BPs on SERS properties is investigated. The SERS detection of weak-affinity molecules to an extremely low limit shows that the cyst-Au BPs are highly sensitive compared to CTAB-capped Au BPs. The limit of detection (LOD) of allura red as low as 0.1 ppb and that of sunset yellow as low as 1 ppb show that the proposed strategy has many advantages due to its simplicity and fast and rapid detection for the sensitivity analysis of weak-affinity molecules.
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Affiliation(s)
- Muhammad Usman Amin
- School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shannxi 710049, China
| | - Ruiyuan Zhang
- School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shannxi 710049, China
| | - Lingwei Li
- School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shannxi 710049, China
| | - Hongjun You
- School of Physics, Xi'an Jiaotong University, Xi'an, Shannxi 710049, China
| | - Jixiang Fang
- School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shannxi 710049, China
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24
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Wu L, Zhang C, Long Y, Chen Q, Zhang W, Liu G. Food additives: From functions to analytical methods. Crit Rev Food Sci Nutr 2021; 62:8497-8517. [PMID: 34058921 DOI: 10.1080/10408398.2021.1929823] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Food additives refer to all kinds of trace substances used in food or food processing to preserve flavor or enhance food taste, appearance, or other qualities. At present, artificial synthetic food additives have gradually replaced the natural food additives and many problems related to food additives, involving the abuse of food additives, excessive additives or even toxic additives. Obviously, food additives can bring people great sensory enjoyment and commercial convenience, but they may also cause potential risks to human health. So, it is of high significance to conduct quantitative analysis on the content of food additives. According to their functions and the regulatory requirements of food additives, this review starts from the classification and structures of various food additives involving colorants, preservatives, antioxidants, sweeteners, emulsifiers, stabilizers, thickeners, gelling agents. It then summarizes and discusses analytical methods for quantification of food additives including modern immunoassays and other biotechnological methods. The proposed review aspires to fill in the knowledge gap of food additives between academia and industry by covering all kinds of analytical methods for quantifying food additives.
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Affiliation(s)
- Long Wu
- College of Food Science and Engineering, Hainan University, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Haikou, Hainan, P.R. China.,Key Laboratory of Fermentation Engineering (Ministry of Education), College of Bioengineering and Food, Hubei University of Technology, Wuhan, Hubei, P.R. China
| | - Chenghui Zhang
- College of Food Science and Engineering, Hainan University, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Haikou, Hainan, P.R. China
| | - Yingxi Long
- School of Life and Health Sciences, The Chinese University of Hong Kong, Shenzhen, P.R. China
| | - Qi Chen
- College of Food Science and Engineering, Hainan University, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Haikou, Hainan, P.R. China
| | - Weimin Zhang
- College of Food Science and Engineering, Hainan University, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Haikou, Hainan, P.R. China
| | - Guozhen Liu
- School of Life and Health Sciences, The Chinese University of Hong Kong, Shenzhen, P.R. China
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25
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Li N, Zhu M, Feng Z, Lu W, Chen J, Zhan J. Carbon-nitrogen conjugate-composited Cu 1.8S with enhanced peroxidase-like activity for the colorimetric detection of hydrogen peroxide and glutathione. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:1706-1714. [PMID: 33861237 DOI: 10.1039/d1ay00166c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this work, cystine-glucose Maillard conjugates were composited with Cu1.8S microspheres (Cu1.8S-cgmc) to achieve higher sensitivity for the colorimetric analysis. Enhanced peroxidase-like activity was obtained in Cu1.8S-cgmc with a carbon elemental ratio of 1.83% compared to bare Cu1.8S. The catalytic activity of Cu1.8S-cgmc followed Michaelis-Menten kinetic behavior. The Michaelis-Menten constants of Cu1.8S-cgmc on the substrate was over 2-fold lower than that of the bare Cu1.8S, indicating the higher affinity of Cu1.8S-cgmc. The adsorption equilibrium constant of Cu1.8S-cgmc on the substrate was 9.89-fold higher than that of bare Cu1.8S based on thermodynamic investigations. The conjugated structure and carboxyl, hydroxyl and amino groups on Cu1.8S-cgmc improved its hydrophilicity and adsorption on the substrate. The affinity-improved Cu1.8S-cgmc was applied as a peroxidase mimic in colorimetric detection with promoted sensitivity. Compared to bare Cu1.8S, Cu1.8S-cgmc had a 25.5-fold and 19.8-fold lower LOD for H2O2 and glutathione, respectively. The Cu1.8S-cgmc-based colorimetric method showed excellent sensitivity and accuracy in practical colorimetric detection.
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Affiliation(s)
- Nianlu Li
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
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26
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Song Y, Huang HC, Lu W, Li N, Su J, Cheng SB, Lai Y, Chen J, Zhan J. Ag@WS 2 quantum dots for Surface Enhanced Raman Spectroscopy: Enhanced charge transfer induced highly sensitive detection of thiram from honey and beverages. Food Chem 2020; 344:128570. [PMID: 33199122 DOI: 10.1016/j.foodchem.2020.128570] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 11/01/2020] [Accepted: 11/02/2020] [Indexed: 11/30/2022]
Abstract
Novel SERS substrates is urgently in demand for rapid and sensitive analysis of toxic agrochemicals from food. In this work, a monodispersed tungsten disulfide quantum dots modified silver nanosphere (Ag@WS2QD) was prepared and used as SERS substrate. Ag@WS2QD generated uniform and stable SERS signals within 2 min, displaying great promise in "mixing and reading" detection. Compared to unmodified colloidal silver nanoparticles, 4 times higher analytical enhancement factor was found in Ag@WS2QD. Density functional theory calculation verified the enhanced charge transfer within the coupling systems of molecule-Ag@WS2QD. Besides, the unique surface properties are beneficial for the enrichment of specific molecule. Both the chemical extraction and enhanced charge transfer contributes to rapid and sensitive SERS detection of Ag@WS2QD. A "mixing and reading" SERS method for thiram from honey and four kinds of juice was developed from Ag@WS2QD, showing great promise for rapid and direct SERS detection for toxic agrochemicals and further applications.
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Affiliation(s)
- Yinshuang Song
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Hai-Cai Huang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Wenhui Lu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Nianlu Li
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Jie Su
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Shi-Bo Cheng
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Yongchao Lai
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, China.
| | - Jing Chen
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China; Suzhou Institute of Shandong University, Suzhou, Jiangsu 215123, China.
| | - Jinhua Zhan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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27
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Andrei CC, Moraillon A, Lau S, Felidj N, Yamakawa N, Bouckaert J, Larquet E, Boukherroub R, Ozanam F, Szunerits S, Chantal Gouget-Laemmel A. Rapid and sensitive identification of uropathogenic Escherichia coli using a surface-enhanced-Raman-scattering-based biochip. Talanta 2020; 219:121174. [PMID: 32887096 DOI: 10.1016/j.talanta.2020.121174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/10/2020] [Accepted: 05/14/2020] [Indexed: 02/01/2023]
Abstract
Rapid, selective and sensitive sensing of bacteria remains challenging. We report on a highly sensitive and reproducible surface-enhanced Raman spectroscopy (SERS)-based sensing approach for the detection of uropathogenic Escherichia coli (E. coli) bacteria in urine. The assay is based on the specific capture of the bacteria followed by interaction with cetyltrimethylammonium bromide (CTAB)-stabilised gold nanorods (Au NRS) as SERS markers. High sensitivity up to 10 CFU mL-1 is achieved by optimizing the capture interface based on hydrogenated amorphous silicon a-Si:H thin films. The integration of CH3O-PEG750 onto a-Si:H gives the sensing interface an efficient anti-fouling character, while covalent linkage of antibodies directed against the major type-1 fimbrial pilin FimA of the human pathogen E. coli results in the specific trapping of fimbriated E. coli onto the SERS substrate and their spectral fingerprint identification.
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Affiliation(s)
- Cristina-Cassiana Andrei
- Laboratoire de Physique de La Matière Condensée, Ecole Polytechnique, CNRS, IP Paris, 91128, Palaiseau, France
| | - Anne Moraillon
- Laboratoire de Physique de La Matière Condensée, Ecole Polytechnique, CNRS, IP Paris, 91128, Palaiseau, France
| | - Stephanie Lau
- Université de Paris, ITODYS, CNRS, UMR 7086, 15 Rue J-A de Baïf, F-75013, Paris, France
| | - Nordin Felidj
- Université de Paris, ITODYS, CNRS, UMR 7086, 15 Rue J-A de Baïf, F-75013, Paris, France
| | - Nao Yamakawa
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR 8576 of the CNRS and the Univ. Lille, 50 Avenue de Halley, 59658, Villeneuve d'Ascq, France
| | - Julie Bouckaert
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR 8576 of the CNRS and the Univ. Lille, 50 Avenue de Halley, 59658, Villeneuve d'Ascq, France
| | - Eric Larquet
- Laboratoire de Physique de La Matière Condensée, Ecole Polytechnique, CNRS, IP Paris, 91128, Palaiseau, France
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520-IEMN, F-59000, Lille, France
| | - François Ozanam
- Laboratoire de Physique de La Matière Condensée, Ecole Polytechnique, CNRS, IP Paris, 91128, Palaiseau, France
| | - Sabine Szunerits
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520-IEMN, F-59000, Lille, France.
| | - Anne Chantal Gouget-Laemmel
- Laboratoire de Physique de La Matière Condensée, Ecole Polytechnique, CNRS, IP Paris, 91128, Palaiseau, France.
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28
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Liu H, Wang M, Li Z, Xin C, Huang G. A fluorescence sensing method for brilliant blue with gold nanoclusters based on the inner filter effect. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:4551-4555. [PMID: 32870183 DOI: 10.1039/d0ay01355b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Due to the inner filter effect (IFE) between Brilliant Blue (BB) and gold nanoclusters (AuNCs), a simple and rapid approach for BB detection was developed. Since the absorption spectrum of BB has a good overlap with the emission spectrum of the AuNCs, the fluorescence of the AuNC solution was quenched after adding BB. Under optimal conditions, a good linear relationship for detection of BB was obtained from 0.05 to 7.5 μM, and the detection limit was 0.0167 μM. More importantly, the assay was successfully applied to assess BB in food samples such as hard candy, chocolate and dried blueberries, showing its potential in food quality control in the future.
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Affiliation(s)
- Haijian Liu
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang, 262700 Weifang, China.
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Kaushal S, Nanda SS, Yi DK, Ju H. Effects of Aspect Ratio Heterogeneity of an Assembly of Gold Nanorod on Localized Surface Plasmon Resonance. J Phys Chem Lett 2020; 11:5972-5979. [PMID: 32631062 DOI: 10.1021/acs.jpclett.0c01507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We examine the effects of aspect ratio (AR) heterogeneity of an assembly of gold nanorods (GNRs) in a colloid on the total cross-section for its light scattering via localized surface plasmons at visible wavelengths. We observe the extraordinary broadening of the extinction spectrum of light through an assembly of GNRs, a colloidal mixture of those having two different ARs. The interparticle distance estimated as ∼1.2-1.3 μm, being greater than the incident wavelength, allows the radiative dipolar coupling to govern the long-range interaction between GNRs. We find that the coupling enhanced local fields can activate the nonresonant polarization of GNRs to turn into a quasi-resonant one. These higher-order effects for GNR polarization can produce the deviation of total cross-section of GNRs assembly beyond the simple sum of an individual cross-section of GNRs that are assumed to have no such long-range coupling. The extraordinary properties of the extinction spectrum need to be taken into account for modulating the spectral distribution of electromagnetic field in photonic devices where an assembly of GNRs is utilized for field enhancement such as those for surface-enhanced spectroscopy, highly efficient photovoltaics, photothermal nanotherapy, and ultrathin absorption filters.
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Affiliation(s)
- Sandeep Kaushal
- Department of Chemistry, Myongji University, 17058 Yongin, Republic of Korea
| | | | - Dong Kee Yi
- Department of Chemistry, Myongji University, 17058 Yongin, Republic of Korea
| | - Heongkyu Ju
- Department of Physics, College of Bionano Technology, Gachon University, 13120 Seongnam, Republic of Korea
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Application of surface-enhanced Raman spectroscopy in fast detection of toxic and harmful substances in food. Biosens Bioelectron 2020; 167:112480. [PMID: 32798805 DOI: 10.1016/j.bios.2020.112480] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/20/2020] [Accepted: 07/26/2020] [Indexed: 01/28/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is being considered as a powerful technique in the area of food safety due to its rapidity, sensitivity, portability, and non-destructive features. This review aims to provide a comprehensive understanding of SERS applications in fast detection of toxic and harmful substances in food matrix. The enhancement mechanism of SERS, classification of active substrates, detection methods, and their advantages and disadvantages are briefly discussed in the review. The latest research progress of fast SERS detection of food-borne pathogens, mycotoxins, shellfish toxins, illegal food additives, and drug residues are highlighted in sections of the review. According to the current status of SERS detection of food-derived toxic and harmful substances, the review comes up with certain problems to be urgently resolved in SERS and brings up the perspectives on the future directions of SERS based biosensors.
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Rapid simultaneous adsorption and SERS detection of acid orange II using versatile gold nanoparticles decorated NH 2-MIL-101(Cr). Anal Chim Acta 2020; 1129:126-135. [PMID: 32891382 DOI: 10.1016/j.aca.2020.07.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 07/05/2020] [Accepted: 07/07/2020] [Indexed: 11/23/2022]
Abstract
Acid orange II (AO II), a typical azo pigment, is strictly controlled by legislation and prohibited in foodstuffs. Herein, we prepared gold nanoparticles decorated amino-functionalized Cr-based metal-organic frameworks [NH2-MIL-101(Cr)@Au] via an in-situ reduction method as a surface-enhanced Raman scattering (SERS) substrate for simultaneous adsorption and detection of AO II. Gold nanoparticles are uniformly dispersed on the surface of NH2-MIL-101(Cr) owing to its three-dimensional (3D) structure and the interaction between -NH2 and Au ions, providing more SERS-active "hot spots". These NH2-MIL-101(Cr)@Au nanocomposites exhibited selective and high adsorption performance (419.85 mg g-1) for AO II, and could be used as superior SERS substrates for the detection of AO II with a low limit of detection (LOD) of 0.05 mg L-1 and wide detection range of 0.05-50 mg L-1 using portable Raman spectrometer. Furthermore, this SERS assay has been successfully used to determine AO II in orange juice and chili powder with good sensitivities.
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Wu L, Pu H, Huang L, Sun DW. Plasmonic nanoparticles on metal-organic framework: A versatile SERS platform for adsorptive detection of new coccine and orange II dyes in food. Food Chem 2020; 328:127105. [PMID: 32464556 DOI: 10.1016/j.foodchem.2020.127105] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 05/15/2020] [Accepted: 05/18/2020] [Indexed: 11/29/2022]
Abstract
Synthetic dyes have been widely applied to food processing, but abuse of colourants in food may pose risks to human health. To analyze new coccine (NC) and orange II (OII) in food, a versatile surface-enhanced Raman scattering (SERS) platform was proposed. A metal-organic framework (MOF, UiO-66(NH2)) with octahedral crystal structure was synthesized and gold nanoparticles were grown on the MOF surface to fabricate UiO-66(NH2)@Au versatile SERS platform. The UiO-66(NH2)@Au displayed much better SERS performance than gold nanoparticles with high R2 of 0.9684 for NC and 0.9912 for OII and low LOD of 0.4015 mg/L for NC and 0.0546 mg/L for OII. The recoveries of NC and OII in Mirinda soft drink and paprika ranged from 82.92 to 109.63%. This study provided a sensitive and rapid method for determination of NC and OII through UiO-66(NH2)@Au, and the proposed SERS platform revealed great potential for analyzing synthetic colourants in food samples.
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Affiliation(s)
- Leilei Wu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Hongbin Pu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Lunjie Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Da-Wen Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Food Refrigeration and Computerized Food Technology (FRCFT), Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland. http://www.ucd.ie/refrig
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33
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Huang Y, Wang X, Lai K, Fan Y, Rasco BA. Trace analysis of organic compounds in foods with surface‐enhanced Raman spectroscopy: Methodology, progress, and challenges. Compr Rev Food Sci Food Saf 2020; 19:622-642. [DOI: 10.1111/1541-4337.12531] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/22/2019] [Accepted: 12/12/2019] [Indexed: 01/17/2023]
Affiliation(s)
- Yiqun Huang
- School of Chemistry and Food EngineeringChangsha University of Science and Technology Changsha Hunan China
| | - Xiaohui Wang
- College of Food Science and TechnologyShanghai Ocean University Shanghai China
| | - Keqiang Lai
- College of Food Science and TechnologyShanghai Ocean University Shanghai China
| | - Yuxia Fan
- Department of Food Science and Technology, School of Agricultural and BiologyShanghai Jiao Tong University Shanghai China
| | - Barbara A. Rasco
- College of Agriculture and Natural ResourcesUniversity of Wyoming Laramie Wyoming
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Qin M, Zhou X, Zhu J, Ma M, Wang H, Yang L. Synthesis of gold nanorods with varied length-diameter ratios-applications using SERS for the detection of drugs. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1700131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Miao Qin
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, China
| | - Xia Zhou
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, China
| | - Jun Zhu
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, China
| | - Mutian Ma
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, China
| | - Hongyan Wang
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, China
| | - Liangbao Yang
- Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
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Xu T, Wang X, Huang Y, Lai K, Fan Y. Rapid detection of trace methylene blue and malachite green in four fish tissues by ultra-sensitive surface-enhanced Raman spectroscopy coated with gold nanorods. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.106720] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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36
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Song Y, Zhang Y, Huang Y, Fan Y, Lai K. Rapid Determination of Thiram Residues in Fruit Juice by surface-enhanced Raman Scattering Coupled with a Gold@Silver nanoparticle-graphene Oxide Composite. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1691220] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Yuying Song
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Yuanyi Zhang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Yiqun Huang
- School of Chemical and Biological Engineering, Changsha University of Science and Technology, Hunan, China
| | - Yuxia Fan
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Engineering Research Center of Food Thermal-Processing Technology, Shanghai, China
| | - Keqiang Lai
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Engineering Research Center of Food Thermal-Processing Technology, Shanghai, China
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He H, Li P, Tang X, Lin D, Xie A, Shen Y, Yang L. Developing cysteamine-modified SERS substrate for detection of acidic pigment with weak surface affinity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 212:293-299. [PMID: 30660061 DOI: 10.1016/j.saa.2019.01.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/01/2019] [Accepted: 01/02/2019] [Indexed: 06/09/2023]
Abstract
In this paper, we developed cysteamine-modified surface-enhanced Raman scattering (SERS) substrate for detecting detect trace amount of acidic pigment that shows weak affinity with gold nanoparticles (Au NPs). To realize sensitive and reproducible detection of pigment with weak affinity, the SERS substrate was prepared by attaching cysteamine (CA) to the Au NPs, the acidic pigment molecule could rapidly reached to the surface of Au NPs because of the formation of multi‑hydrogen-bond and electrostatic interaction between the pigment and CA molecule. The proposed method allowed us to detect five kinds of acidic pigment with a limit of 1.0 ppm, which is below the strictest safety limit. Compared with the previous methods, the advantages of the present substrate were its simple substrate preparation, high reproducibility and good universality. Furthermore, the reliable and enough accurate results had been obtained by using of the proposed substrates in the assay of trace pigment in real samples.
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Affiliation(s)
- Huan He
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China
| | - Pan Li
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
| | - Xianghu Tang
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
| | - Dongyue Lin
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
| | - Anjian Xie
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China
| | - Yuhua Shen
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China.
| | - Liangbao Yang
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China.
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38
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Probing the influence of food colorant on digestive ability: sunset yellow-pepsin system. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-2359-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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39
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Khanal BP, Zubarev ER. Gram-Scale Synthesis of Isolated Monodisperse Gold Nanorods. Chemistry 2018; 25:1595-1600. [DOI: 10.1002/chem.201805571] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 11/20/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Bishnu P. Khanal
- Department of Chemistry; Rice University; 6100 Main Street Houston TX 77005 USA
| | - Eugene R. Zubarev
- Department of Chemistry; Rice University; 6100 Main Street Houston TX 77005 USA
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