1
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Yuan L, Liu L, Mi Z, Chen M, Bai Y, Qin J, Feng F. A ratiometric sensor based on dual-emission carbon dots sensitive detection of amaranth. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123058. [PMID: 37393669 DOI: 10.1016/j.saa.2023.123058] [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: 03/08/2023] [Revised: 06/17/2023] [Accepted: 06/19/2023] [Indexed: 07/04/2023]
Abstract
Amaranth (AMA), a common food additive, is important to strictly control the content of food for the human body. In this paper, an innovative method based on intrinsic dual-emissive carbon dots (Y/B-CDs) was used to detect AMA. Y/B-CDs have two emission wavelengths at 416 and 544 nm with the excitation wavelength at 362 nm. The addition of AMA can rapidly quench the fluorescence of the two peaks with different degrees, and ratiometric detection can be achieved. Quantitative analysis showed two linear ranges of 0.1-20 μM and 20-80 μM, and detection limits are 42 and 33 nM, respectively. Moreover, good results were obtained for the detection of AMA in beverages and candy using Y/B-CDs. This suggests that the constructed sensor has the potential to detect AMA in real samples.
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Affiliation(s)
- Lin Yuan
- School of Chemistry and Chemical Engineering, Shanxi Provincial Key Laboratory of Chemical Biosensing, Shanxi Datong University, Datong 037009, PR China
| | - Lizhen Liu
- School of Chemistry and Chemical Engineering, Shanxi Provincial Key Laboratory of Chemical Biosensing, Shanxi Datong University, Datong 037009, PR China.
| | - Zhi Mi
- School of Chemistry and Chemical Engineering, Shanxi Provincial Key Laboratory of Chemical Biosensing, Shanxi Datong University, Datong 037009, PR China
| | - Meng Chen
- School of Chemistry and Chemical Engineering, Shanxi Provincial Key Laboratory of Chemical Biosensing, Shanxi Datong University, Datong 037009, PR China
| | - Yunfeng Bai
- School of Chemistry and Chemical Engineering, Shanxi Provincial Key Laboratory of Chemical Biosensing, Shanxi Datong University, Datong 037009, PR China
| | - Jun Qin
- School of Chemistry and Chemical Engineering, Shanxi Provincial Key Laboratory of Chemical Biosensing, Shanxi Datong University, Datong 037009, PR China
| | - Feng Feng
- School of Chemistry and Chemical Engineering, Shanxi Provincial Key Laboratory of Chemical Biosensing, Shanxi Datong University, Datong 037009, PR China; School Department of Energy Chemistry and Materials Engineering, Shanxi Institute of Energy, Taiyuan 030600, PR China.
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2
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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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3
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Thor SH, Ho LN, Ong SA, Abidin CZA, Heah CY, Yap KL. Disclosing the mutual influence of photocatalytic fuel cell and photoelectro-Fenton process in the fabrication of a sustainable hybrid system for efficient Amaranth dye removal and simultaneous electricity production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:34363-34377. [PMID: 36512276 DOI: 10.1007/s11356-022-24647-5] [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: 08/11/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Photocatalytic fuel cell (PFC) was employed to provide renewable power sources to photoelectro-Fenton (PEF) process to fabricate a double-chambered hybrid system for the treatment of azo dye, Amaranth. The PFC-PEF hybrid system was interconnected by a circuit attached to the electrodes in PFC and PEF. Circuit connection is the principal channel for the electron transfer and mobility between PFC and PEF. Thus, different circuit connections were evaluated in the hybrid system for their influences on the Amaranth dye degradation. The PFC-PEF system under the complete circuit connection condition attained the highest decolourization efficiency of Amaranth (PFC: 98.85%; PEF: 95.69%), which indicated that the complete circuit connection was crucial for in-situ formation of reactive species in dye degradation. Besides, the pivotal role of ultraviolet (UV) light irradiation in the PFC-PEF system for both dye degradation and electricity generation was revealed through various UV light-illuminating conditions applied for PFC and PEF. A remarkable influence of UV light irradiation on the production of hydrogen peroxide and generation and regeneration of Fe2+ in PEF was demonstrated. This study provided a comprehensive mechanistic insight into the dye degradation and electricity generation by the PFC-PEF system.
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Affiliation(s)
- Shen-Hui Thor
- Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia
| | - Li-Ngee Ho
- Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia.
| | - Soon-An Ong
- Water Research and Environmental Sustainability Growth, Centre of Excellence (WAREG), Faculty of Civil Engineering & Technology, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia
| | - Che Zulzikrami Azner Abidin
- Water Research and Environmental Sustainability Growth, Centre of Excellence (WAREG), Faculty of Civil Engineering & Technology, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia
| | - Cheng-Yong Heah
- Faculty of Mechanical Engineering & Technology, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia
| | - Kea-Lee Yap
- Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia
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4
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Li G, Liu Z, Gao W, Tang B. Recent advancement in graphene quantum dots based fluorescent sensor: Design, construction and bio-medical applications. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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5
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Beitollahi H, Garkani Nejad F, Dourandish Z, Tajik S. A novel voltammetric amaranth sensor based on screen printed electrode modified with polypyrrole nanotubes. ENVIRONMENTAL RESEARCH 2022; 214:113725. [PMID: 35732202 DOI: 10.1016/j.envres.2022.113725] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 05/01/2022] [Accepted: 06/15/2022] [Indexed: 05/26/2023]
Abstract
Azo dyes are the most used type of dye in the textile industry. Some of these dyes have the potential to be extremely toxic to both human health and the environment. The purpose of this study was to develope an electrochemical sensor for detection of amaranth. The electrochemical sensor based on the modification of a screen-printed electrode via polypyrrole nanotubes (PPy NTs/SPE) for detection of amaranth was developed. The preparation of PPy NTs was performed through the pyrrole monomer oxidation with iron (III) chloride in exposure to methyl orange as structure-guiding agent. Findings exhibited an excellent electrocatalytic activity of as-fabricated sensor for amaranth detection. Our sensor under the optimized circumstances also had a broad linear dynamic range (between 0.03 μM and 290.0 μM) and a narrow limit of detection (0.01 μM) towards the amaranth detection. Moreover, the proposed sensor could practically and successfully determine the amaranth content present in the real food specimens, with acceptable recovery rates.
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Affiliation(s)
- Hadi Beitollahi
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran.
| | - Fariba Garkani Nejad
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
| | - Zahra Dourandish
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
| | - Somayeh Tajik
- Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran
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6
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Zhou X, Yu J, Li J, Li S, Zhang D, Wu D, Pan S, Chen W. Spatial correlation among cultivated land intensive use and carbon emission efficiency: A case study in the Yellow River Basin, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:43341-43360. [PMID: 35094255 DOI: 10.1007/s11356-022-18908-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 01/23/2022] [Indexed: 06/14/2023]
Abstract
Considering the current global goal of carbon neutrality, the relationship between cultivated land intensive use (CLIU) and carbon emission efficiency (CEE) should be explored to address the global climate crisis and move toward a low-carbon future. However, previous work in this has been conducted at provincial/regional scales and few have identified the spatial correlation between CLIU and CEE at the scale of large river basins. Therefore, this study explored the spatiotemporal characteristics of CLIU, cultivated land carbon emissions (CLCE), and CEE, as well as the spatial correlation between CLIU and CEE in the Yellow River Basin (YRB), China. A comprehensive evaluation model, the Intergovernmental Panel on Climate Change (IPCC) coefficient methodology, existing data envelopment analysis model, and bivariate spatial autocorrelation models were used to analyze statistical data from 2005 to 2017. We found that the overall CLIU and CLCE values in the YRB exhibited a continuous increase; the average carbon emission total efficiency and carbon emission scale efficiency first decreased and then increased, and the average carbon emission pure technical efficiency gradually decreased. Areas of high CLCE were concentrated in eastern areas of the YRB, whereas those of high CLIU, carbon emission total efficiency, carbon emission scale efficiency, and carbon emission pure technical efficiency predominantly appeared in the eastern areas, followed by central and western areas of the YRB. Spatial analysis revealed a significant spatial dependence of CLIU on CEE. From a global perspective, the spatial correlations between CLIU and CEE changed from positive to negative with time. Moreover, the aggregation degree between CLIU and CEE gradually decreases with time, while the dispersion degree increases with time, and the spatial correlation gradually weakens. The local spatial autocorrelation further demonstrates that the number of high-low and low-high clusters between CLIU and CEE gradually increases over time, while the number of high-high and low-low clusters gradually decreased over time. Collectively, these findings can help policymakers formulate feasible low-carbon and efficient CLIU policies to promote win-win cooperation among regions.
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Affiliation(s)
- Xiao Zhou
- Department of Land Resources Management, School of Public Administration, China University of Geosciences, Wuhan, 430074, China
- Key Laboratory of Rule of Law Research, Ministry of Natural Resources, Wuhan, 430074, China
| | - Juan Yu
- Department of Land Resources Management, School of Public Administration, China University of Geosciences, Wuhan, 430074, China
- Key Laboratory of Rule of Law Research, Ministry of Natural Resources, Wuhan, 430074, China
| | - Jiangfeng Li
- Department of Land Resources Management, School of Public Administration, China University of Geosciences, Wuhan, 430074, China
- Key Laboratory of Rule of Law Research, Ministry of Natural Resources, Wuhan, 430074, China
| | - Shicheng Li
- Department of Land Resources Management, School of Public Administration, China University of Geosciences, Wuhan, 430074, China
- Key Laboratory of Rule of Law Research, Ministry of Natural Resources, Wuhan, 430074, China
| | - Dou Zhang
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China
| | - Di Wu
- Department of Land Resources Management, School of Public Administration, China University of Geosciences, Wuhan, 430074, China
- Key Laboratory of Rule of Law Research, Ministry of Natural Resources, Wuhan, 430074, China
| | - Sipei Pan
- Department of Land Resources Management, School of Public Administration, China University of Geosciences, Wuhan, 430074, China
- Key Laboratory of Rule of Law Research, Ministry of Natural Resources, Wuhan, 430074, China
| | - Wanxu Chen
- Department of Geography, School of Geography and Information Engineering, China University of Geosciences, Wuhan, 430074, China.
- Research Center for Spatial Planning and Human-Environmental System Simulation, China University of Geosciences, Wuhan, 430074, China.
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, 100875, China.
- School of Geography and Information Engineering, East Lake New Technology Development Zone, China University of Geosciences, No. 68, Jincheng Street, Wuhan, Hubei Province, 430078, People's Republic of China.
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7
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Zhu X, Guo X, Song J, Han P, Xin G, Wang R. Facial precipitation fabrication of visible light driven nitrogen-doped graphene quantum dots decorated iodine bismuth oxide catalysts. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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A Novel Fluorescent FRET Hairpin Probe Switch for aflD Gene Detection in Real Fermented Soybean Paste. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-021-02080-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Sharma AS, Ali S, Sabarinathan D, Murugavelu M, Li H, Chen Q. Recent progress on graphene quantum dots-based fluorescence sensors for food safety and quality assessment applications. Compr Rev Food Sci Food Saf 2021; 20:5765-5801. [PMID: 34601802 DOI: 10.1111/1541-4337.12834] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 08/04/2021] [Accepted: 08/08/2021] [Indexed: 12/23/2022]
Abstract
The versatile photophysicalproperties, high surface-to-volume ratio, superior photostability, higher biocompatibility, and availability of active sites make graphene quantum dots (GQDs) an ideal candidate for applications in sensing, bioimaging, photocatalysis, energy storage, and flexible electronics. GQDs-based sensors involve luminescence sensors, electrochemical sensors, optical biosensors, electrochemical biosensors, and photoelectrochemical biosensors. Although plenty of sensing strategies have been developed using GQDs for biosensing and environmental applications, the use of GQDs-based fluorescence techniques remains unexplored or underutilized in the field of food science and technology. To the best of our knowledge, comprehensive review of the GQDs-based fluorescence sensing applications concerning food quality analysis has not yet been done. This review article focuses on the recent progress on the synthesis strategies, electronic properties, and fluorescence mechanisms of GQDs. The various GQDs-based fluorescence detection strategies involving Förster resonance energy transfer- or inner filter effect-driven fluorescence turn-on and turn-off response mechanisms toward trace-level detection of toxic metal ions, toxic adulterants, and banned chemical substances in foodstuffs are summarized. The challenges associated with the pretreatment steps of complex food matrices and prospects and challenges associated with the GQDs-based fluorescent probes are discussed. This review could serve as a precedent for further advancement in interdisciplinary research involving the development of versatile GQDs-based fluorescent probes toward food science and technology applications.
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Affiliation(s)
| | - Shujat Ali
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | | | | | - Huanhuan Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China.,College of Food and Biological Engineering, Jimei University, Xiamen, China
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10
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Hu K, Wang Y, Lian G, Xiao F, Shao T, Jin G. A strong acid-resistant flavanthrone with excellent photophysical properties. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Ma Y, Guo J, Chen Y, Yi Y, Zhu G. Electrochemical sensing of phenolics based on copper/cobalt/nitrogen co-doped hollow nanocarbon spheres. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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12
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Zhu Y, Yan L, Xu M, Li Y, Song X, Yin L. Difference between ammonia and urea on nitrogen doping of graphene quantum dots. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125703] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Tajik S, Beitollahi H, Jang HW, Shokouhimehr M. A simple and sensitive approach for the electrochemical determination of amaranth by a Pd/GO nanomaterial-modified screen-printed electrode. RSC Adv 2020; 11:278-287. [PMID: 35423012 PMCID: PMC8690309 DOI: 10.1039/d0ra08723h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 11/21/2020] [Indexed: 11/30/2022] Open
Abstract
It is essential to develop easy-to-use sensors towards a better monitoring of food additives so that human health can be positively influenced. A type of critical food additive that is widely used in making soft drinks and diverse foodstuff is called amaranth. This study aimed at presenting a novel Pd/GO nanomaterial-modified screen-printed electrode (Pd/GO/SPE), which is responsible for providing a sensing interface during the process of specifying the electrochemical features of amaranth. The morphology and structure of the Pd/GO nanomaterial was investigated by Fourier-transform infrared spectroscopy, thermal gravimetric analysis, X-ray photoelectron spectroscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, scanning transmission electron microscopy, and high-resolution transmission electron microscopy. When the optimized conditions was adjusted, Pd/GO/SPE proved to be a capable sensor for conducting a very sensitive sensing towards the amaranth under a common working situation of 575 mV. In this regard, it was embarked on measuring some of the sensor features, including its sensitivity, linear dynamic range, and detection limit for amaranth with the values of 0.0948 μA μM-1, 0.08 μM-360.0 μM and 30.0 nM were obtained, respectively.
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Affiliation(s)
- Somayeh Tajik
- Research Center for Tropical and Infectious Diseases, Kerman University of Medical Sciences Kerman Iran
| | - Hadi Beitollahi
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology Kerman Iran
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University Seoul 08826 Republic of Korea
| | - Mohammadreza Shokouhimehr
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University Seoul 08826 Republic of Korea
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14
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Zeng W, Huang D, Zhu G, Lv B, Yi Y. 3-Aminobenzeneboronic Acid Functionalized MoS 2 Quantum Dot as Fluorescent Nanoprobe for the Determination of o-Dihydroxybenzene. ANAL SCI 2020; 36:1203-1209. [PMID: 32418931 DOI: 10.2116/analsci.20p011] [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] [Indexed: 01/16/2023]
Abstract
In this work, by functionalizing MoS2 quantum dot with 3-aminobenzeneboronic acid, a novel multifunctional quantum dot (denoted as B-MoS2 QD) was obtained and used successfully for a fluorescence nanoprobe for detecting o-dihydroxybenzene (o-DHB). Transmission electron microscopy, fluorescence spectrum, UV-vis spectrum and fluorescence lifetime were used to investigate the prepared nanoprobe. The results show that the B-MoS2 QD nanoprobe can exhibit strong fluorescence and excellent light fastness owing to the coupled effect from the MoS2 QDs and boronic acid; interestingly, the vicinal diols structure from its surface can bridge covalently with o-DHB, resulting in the fluorescence quenching of B-MoS2 QDs and selective recognition toward o-DHB. With the increasing of o-DHB concentration, the nanoprobe fluorescence would gradually decrease. By measuring the fluorescence intensity of B-MoS2 QDs, a wide linear range from 0.1 to 200.0 μM with a low detection limit of 0.025 μM was obtained for o-DHB analysis; meanwhile, this fluorescence nanoprobe possesses excellent selectivity for the selective detection of o-DHB from its analogues.
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Affiliation(s)
- Wei Zeng
- School of the Environment and Safety Engineering, Jiangsu University
| | - Dongyan Huang
- School of the Environment and Safety Engineering, Jiangsu University.,State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
| | - Gangbing Zhu
- School of the Environment and Safety Engineering, Jiangsu University.,State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
| | - Baohe Lv
- School of the Environment and Safety Engineering, Jiangsu University
| | - Yinhui Yi
- School of the Environment and Safety Engineering, Jiangsu University.,State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University
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15
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A near-infrared azadipyrromethene dye: Photophysical properties under different acidity conditions. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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16
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Li Y, Hao N, Luo S, Liu Q, Sun L, Qian J, Cai J, Wang K. Simultaneous detection of TNOS and P35S in transgenic soybean based on magnetic bicolor fluorescent probes. Talanta 2020; 212:120764. [PMID: 32113537 DOI: 10.1016/j.talanta.2020.120764] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 01/14/2020] [Accepted: 01/19/2020] [Indexed: 12/25/2022]
Abstract
A magnetic-separation-dual-targets fluorescent biosensor was fabricated to detect terminator nopaline synthase (TNOS) and promoter of cauliflower mosaic virus 35s (P35S) in transgenic soybean based on incorporation of bicolor CdTe quantum dots carried by silica nanospheres. In this protocol, the fixed probes for TNOS or P35S were magnetized firstly with Fe3O4@Au magnetic nanosphere by Au-S covalent bonding to achieve magnetized probes. Meanwhile, the capture probes for TNOS or P35S were functionalized with green or red fluorescent microspheres respectively to obtain fluorescently-labeled probes, which could emit relative strong green or red fluorescent signal. Two terminals of TNOS or P35S were recognized by magnetized probes and fluorescently-labeled probes respectively to form the sandwiched structures in the process of biosensor development subsequently, and it was separated by a magnet instantly. The fluorescence intensities of remnant supernatant were measured and analyzed accordingly to achieve simultaneous detection of TNOS and P35S. This biosensor exhibited a good dynamic range, low limit of detection and excellent selectivity in detecting transgenic soybean.
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Affiliation(s)
- Yaqi Li
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Nan Hao
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Shilong Luo
- Sinograin Zhenjiang Grains & Oils Quality Testing Center, Zhenjiang, 212006, China
| | - Qian Liu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Li Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Jianrong Cai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China; Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China.
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17
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Zhu G, Huang D, Liu L, Yi Y, Wu Y, Huang Y. One-Step Green Preparation of N-Doped Silicon Quantum Dots for the on-off Fluorescent Determination of Hydrogen Peroxide. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1720222] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Gangbing Zhu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Dongyan Huang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Lirong Liu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Yinhui Yi
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
| | - Yuntao Wu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Yongqiang Huang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
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