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Zhao P, Xia X, Luo Y, Yuan Z, Deng J, Luo H, Luo X, Huo D, Hou C. A porphyrin-modified CoMoO 4 nanosensor array for the detection of crude baijiu. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 39364608 DOI: 10.1039/d4ay01082e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2024]
Abstract
The rapid classification of crude baijiu is pivotal for its industrialization and automated development. In this study, a colorimetric sensor array employing peroxidase nanase (Por-CoMoO4) was developed to detect reducing substances and crude baijiu. The peroxidase-like activity of CoMoO4 was significantly enhanced by porphyrin (Por), exhibiting a Km value of 0.044 mM and Vmax of 19.37 × 10-8 for TMB substrate. Peroxidase activity varies at different pH levels. Organic and crude baijiu scavenge free radicals, thereby inhibiting oxTMB formation and yielding distinctive fingerprint profiles. Using linear discriminant analysis, 14 types of small molecules and 16 varieties of Luzhou-flavor crude baijiu were identified within specific concentration ranges. The method achieved 100% accuracy in distinguishing baijiu samples sourced from different distilleries, offering a straightforward, rapid, and effective approach to differentiate crude baijiu during alcoholic beverage production.
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Affiliation(s)
- Peng Zhao
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Xuhui Xia
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Yiyao Luo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Zirui Yuan
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Jiaxi Deng
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Huibo Luo
- Liquor Making Biology Technology and Application of Key Laboratory of Sichuan Province, College of Bioengineering, Sichuan University of Science and Engineering, 188 University Town, Yi bin 644000, PR China
| | - Xiaogang Luo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
- Liquor Making Biology Technology and Application of Key Laboratory of Sichuan Province, College of Bioengineering, Sichuan University of Science and Engineering, 188 University Town, Yi bin 644000, PR China
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2
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Zhou T, Lin J, Jin F, Yao Y, Li Z, Wang L. Rational design of monodispersed Au@Pt core-shell nanostructures with excellent peroxidase-mimicking activity for colorimetric detection of Cr(VI). ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 39364692 DOI: 10.1039/d4ay01334d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2024]
Abstract
Cr(VI) is one of the most typical heavy metal contaminants and rapid detection of Cr(VI) is highly important in food control and public health. Herein, a core-shell Au@Pt nanozyme-based colorimetric assay was developed for the rapid and sensitive detection of Cr(VI). The monodispersed Au@Pt core-shell nanoparticles exhibited high peroxidase-mimicking activity and can catalyze colorless TMB into blue-colored oxidized oxTMB. After the addition of Cr(VI), the oxTMB molecules can be reduced into colorless TMB. The ultrathin Pt shell can prevent the Pt component from aggregation, thus improving the catalytic activity of Au@Pt nanozyme. These Au@Pt nanozyme-based Cr(VI) assays exhibited high sensitivity and selectivity and displayed satisfactory recoveries in practical samples. Our work highlights opportunities for the development of core-shell nanozymes with extensive applications in food safety, biomedicine, and environmental monitoring.
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Affiliation(s)
- Taohong Zhou
- Key Laboratory of Detection Technology of Focus Chemical Hazards in Animal-derived Food for State Market Regulation, Wuhan, 430070, China.
| | - Jin Lin
- Key Laboratory of Detection Technology of Focus Chemical Hazards in Animal-derived Food for State Market Regulation, Wuhan, 430070, China.
| | - Fengmei Jin
- Wuhan Academy of Agricultural Sciences, Wuhan, 430072, China.
| | - Yanxing Yao
- Wuhan Academy of Agricultural Sciences, Wuhan, 430072, China.
| | - Zhihao Li
- Wuhan Academy of Agricultural Sciences, Wuhan, 430072, China.
| | - Lihua Wang
- Key Laboratory of Detection Technology of Focus Chemical Hazards in Animal-derived Food for State Market Regulation, Wuhan, 430070, China.
- Wuhan Academy of Agricultural Sciences, Wuhan, 430072, China.
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3
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Sun M, Liu Y, Shi L, Dou H, Ma F, Xu G, Zhao L. A novel ratiometric colorimetric sensor for detecting hypochlorite and ascorbic acid based on cascade reaction. Anal Biochem 2024; 696:115678. [PMID: 39322174 DOI: 10.1016/j.ab.2024.115678] [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: 08/01/2024] [Revised: 09/20/2024] [Accepted: 09/22/2024] [Indexed: 09/27/2024]
Abstract
Hypochlorite and ascorbic acid (AA), play an indispensable role in numerous physiological activities. Herein, a ratiometric colorimetric sensing strategy for the determination of hypochlorite and AA was developed via the catalytic oxidation and reduction of 3,3',5,5'-tetramethylbenzidine (TMB). Interestingly, in the presence of Fe3O4-MOF-5(Fe) and hypochlorite, TMB complexes in acidic environments were oxidized to blue oxidized TMB and further diazotized to produce yellow-green diazotized TMB, resulting in the hypochlorite concentration-dependent ratiometric variation for the absorbance at 652 and 450 nm (A450/A652). Moreover, the diazotized TMB was restored to colorless TMB due to the reducibility of AA, and the detection limit of hypochlorite and AA were 0.027 and 0.677 μM, respectively. The ratiometric colorimetric sensing platform offered higher sensitivity and better selectivity because of the specific hypochlorite-induced reaction and the excellent peroxidase-like activity of Fe3O4-MOF-5(Fe). The proposed novel strategy provided the guidance to develop sensors for successive detection of hypochlorite and AA in complicated samples.
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Affiliation(s)
- Miaowen Sun
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Yanzhu Liu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Lingge Shi
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Haomiao Dou
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Feiyan Ma
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Guangda Xu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China.
| | - Longshan Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China.
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4
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Liu Y, Tian L, Zhao Z, Liu W, Qi L. High-loading ficin@AuNPs on polymer-UiO-66 surface with enhanced peroxidase-mimetic catalytic activity for colourimetric detection of dopamine. Mikrochim Acta 2024; 191:616. [PMID: 39313731 DOI: 10.1007/s00604-024-06689-3] [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: 07/15/2024] [Accepted: 09/05/2024] [Indexed: 09/25/2024]
Abstract
Recently, MOFs@AuNPs composites-based catalysts via anchoring of AuNPs onto metal-organic-frameworks (MOFs) have attracted great attention. However, the influence of the AuNPs loading amounts on the catalytic activity of MOFs@AuNPs composites remains largely unexplored. Here, ficin (Fic) protected AuNPs (Fic@AuNPs) anchored onto the surface of UiO-66-NH2 (UiO) modified with poly(2-vinyl-4,4-dimethyl-2-oxazolidine) (PV) were designed and constructed. The UiOPVFic@AuNPs composites with longer PV chains leading to high-loading Fic@AuNPs exhibited intense peroxidase (POD)-mimetic activity in 3,3'5,5'-tetramethylbenzidine (TMB) oxidation. Further, following the colour-fading, dopamine (DA) was sensitively and selectively monitored in the composites-TMB-H2O2 system. The portable smartphone sensing platform-based colourimetric method had good linearity ranging from 3.34 to 36.7 μM (R2 = 0.995), with a limit of detection of 0.3 μM. This protocol explores high-loading AuNPs on polymer-MOFs composites, providing deep insights into understanding catalytic activity improvements of polymer-MOFs@AuNPs catalysts and revealing their application potential in real biological samples analysis.
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Affiliation(s)
- Yutong Liu
- Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. of China
- School of Pharmacy, Xinxiang Medical University, Xinxiang, 453003, P. R. China
| | - Lin Tian
- Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. of China
- School of Pharmacy, Xinxiang Medical University, Xinxiang, 453003, P. R. China
| | - Zhenwen Zhao
- Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. of China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wei Liu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, 453003, P. R. China.
| | - Li Qi
- Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. of China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
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Mu J, Ren M, Li N, Zhao T, Liu ZY, Ma J, Lei S, Wang J, Yang EC, Wang Y. Bimetal loaded graphitic carbon nitride with synergistic enhanced peroxidase-like activity for colorimetric detection of p-phenylenediamine. Phys Chem Chem Phys 2024; 26:21677-21687. [PMID: 39091182 DOI: 10.1039/d4cp01606h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
In recent years, great progress has been made on the study of nanozymes with enzyme-like properties. Here, bimetallic Fe and Ni nanoclusters were anchored on the nanosheets of nitrogen-rich layered graphitic carbon nitride by one-step pyrolysis at high temperature (Fe/Ni-CN). The loading content of Fe and Ni on Fe/Ni-CN is as high as 8.0%, and Fe/Ni-CN has a high specific surface area of 121.86 m2 g-1. The Fe/Ni-CN can effectively oxidize 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of H2O2, and exhibits efficient peroxidase-like activity, leading to a 17.2-fold increase compared to pure graphitic carbon nitride (CN). Similar to the natural horseradish peroxidase (HRP), the Fe/Ni-CN nanozyme follows catalytic kinetics. The Michaelis-Menten constant (Km) value of the Fe/Ni-CN nanozyme for TMB is about 8.3-fold lower than that for HRP, which means that the Fe/Ni-CN nanozyme has better affinity for TMB. In addition, the catalytic mechanism was investigated by combination of free radical quenching experiments and density-functional theory (DFT) calculations. The results show that the high peroxidase-like activity is due to the easy adsorption of H2O2 after bimetal loading, which is conducive to the production of hydroxyl radicals. Based on the extraordinary peroxidase-like activity, the colorimetric detection of p-phenylenediamine (PPD) was constructed with a wide linear range of 0.2-30 μM and a low detection limit of 0.02 μM. The sensor system has been successfully applied to the detection of residual PPD in real dyed hair samples. The results show that the colorimetric method is sensitive, highly selective and accurate. This study provides a new idea for the efficient enhancement of nanozyme activity and effective detection of PPD by a bimetallic synergistic strategy.
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Affiliation(s)
- Jianshuai Mu
- Academy of Interdisciplinary Studies on Intelligent Molecules, College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China.
- Tianjin Saina Enzyme Technology Co., Ltd, Tianjin 300192, P. R. China
| | - Mengjiao Ren
- Academy of Interdisciplinary Studies on Intelligent Molecules, College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China.
| | - Ning Li
- Academy of Interdisciplinary Studies on Intelligent Molecules, College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China.
| | - Tengyi Zhao
- Academy of Interdisciplinary Studies on Intelligent Molecules, College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China.
| | - Zhong-Yi Liu
- Academy of Interdisciplinary Studies on Intelligent Molecules, College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China.
| | - Jingwen Ma
- Academy of Interdisciplinary Studies on Intelligent Molecules, College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China.
| | - Shulai Lei
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang 441053, China
| | - Jiajun Wang
- Academy of Interdisciplinary Studies on Intelligent Molecules, College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China.
| | - En-Cui Yang
- Academy of Interdisciplinary Studies on Intelligent Molecules, College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China.
| | - Yan Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
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Zhao W, Zhai R, Chen Q, Huang C, Li H, Zhu Y, Duan Y, Gao J. Detection of GSH with a dual-mode biosensor based on carbon quantum dots prepared from dragon fruit peel and the T-Hg(II)-T mismatch. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:4951-4959. [PMID: 38973573 DOI: 10.1039/d4ay00904e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Glutathione (GSH) is commonly used as a diagnostic biomarker for many diseases. In this study, based on carbon quantum dots prepared from dragon fruit peel (D-CQDs) and the T-Hg(II)-T mismatch, a dual-mode biosensor was developed for the detection of GSH. This system consists of two single-stranded DNA (ssDNA). DNA1 was the T-rich sequence; DNA2 was attached to streptavidin-coated magnetic beads and consisted of T-rich and G-rich fragments. Due to the presence of Hg(II), the T-Hg(II)-T mismatch was formed between T-rich fragments of two ssDNA. In the presence of GSH, Hg(II) detached from dsDNA and bound with GSH to form a new complex. The G-rich fragment assembled with the hemin shed from D-CQDs to form the G-quadruplex/hemin complex. At this time, in fluorescence mode, the fluorescence of D-CQDs quenched by hemin could be restored. In colorimetric mode, after the magnetic beads separate, a visual signal could be produced by catalyzing the oxidation of ABTS using the peroxide-like activity of the G-quadruplex/hemin complex. This biosensor in both fluorescence mode and colorimetric mode had excellent selectivity and sensitivity, and the limit of detection was 0.089 µM and 0.26 µM for GSH, respectively. Moreover, the proposed dual-mode biosensor had good application prospects for detection of GSH.
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Affiliation(s)
- Weiqin Zhao
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Ruichen Zhai
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Qianxiao Chen
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Chun Huang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Haojia Li
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Youyu Zhu
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Yingfeng Duan
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Jie Gao
- Department of Stomatology, Xi'an International Medical Center Hospital Affiliated to Northwest University, Xi'an 710061, China.
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Jesuraj R, Perumal P. A highly effective peroxidase-mimic nanozyme of S, N-carbon dot-decorated cerium organic framework-based colorimetric detection of Hg 2+ ion and thiophanate methyl. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:3562-3576. [PMID: 38780406 DOI: 10.1039/d4ay00636d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
In this study, we proposed a colorimetric probe as S, N-carbon dot-decorated Ce-MOF (S, N-CD@Ce-MOF) for the dual detection of mercury and thiophanate methyl (TM), which are simultaneously present pollutants in the environment and foodstuffs. These pollutants cause serious threats to human health, such as carcinogenicity and neurovirulence. Herein, we synthesized S, N-CD@Ce-MOF using the hydrothermal method and applied it to a "turn-off-on" probe to detect mercury and TM using the colorimetric method in water and food samples. S, N-CD@Ce-MOF shows excellent peroxidase activity by catalyzing the chromogenic substrate of 3,3',5,5'-tetramethylbenzidine (TMB), resulting in deep blue-colored oxidized TMB product (ox TMB) in the presence of H2O2 with a UV absorption wavelength at 654 nm. However, the addition of Hg(II) ions prohibits the oxidation of TMB by an electron transfer effect and easily binds with -S, -N-containing sites on the surface of carbon dots, obstructing the catalytic active sites and decreasing catalytic efficiency with weak UV absorption at 654 nm as a "turn-off". Subsequently, the addition of TM to the above sensing solution as a "turn-on" was triggered by the TM-Hg complex formation and permitted TMB oxidation with a strong absorption peak at 654 nm. Furthermore, this proposed sensor demonstrates a superior linear response to mercury ions and TM in the ranges from 0 to 15 μM and 0 to 14 μM, respectively. The developed colorimetric assay exhibits good sensitivity and selectivity against various possible interferences. Furthermore, we found that the limits of detection for Hg2+ and TM were as low as 0.01 μM and 0.03 μM, respectively. The developed sensor provides various benefits, such as cost-effectiveness, simplicity without a complex detection process, and naked-eye detection. Consequently, our proposed colorimetric technique worked well for the detection of Hg2+ in real water samples and TM in real apple and tomato juice.
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Affiliation(s)
- Rajakumari Jesuraj
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India.
| | - Panneerselvam Perumal
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India.
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8
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Fu Z, Huang J, Wei W, Wu Z, Shi X. A multimode biosensor based on prussian blue nanoparticles loaded with gold nanoclusters for the detection of aflatoxin B1. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 38690679 DOI: 10.1039/d3ay02330c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Herein, a novel fluorescent/colorimetric/photothermal biosensor is proposed for aflatoxin B1 (AFB1) detection in food based on Prussian blue nanoparticles (PBNPs) (∼50 nm), gold nanoclusters (AuNCs), and an aptamer (Apt) within three hours. Briefly, a multifunctional compound, namely PBNPs-PEI@AuNCs, was synthesized from PBNPs as the loading carrier, polyethyleneimine (PEI) as the cross-linking agent, and AuNCs directly combined on the surface of PBNPs. The AFB1 Apt was then modified on the PBNPs-PEI@AuNCs to form a PBNPs-PEI@AuNCs-Apt probe, whereby when AFB1 is present, AFB1 is specifically captured by the probe. Meanwhile, the MNPs@antibody was also introduced to capture AFB1, thereby forming a "sandwich" structure compound. After magnetic separation, high temperature was applied to this "sandwich" structure compound to induce the denaturation of the Apt. Then the fluorescent/colorimetric/photothermal signals were collected from the PBNPs-PEI@AuNCs@Apt to give information on its related condition. The detection limits of the biosensor were 0.64 × 10-14, 0.96 × 10-14, and 0.55 × 10-12 g mL-1 for the three signals, which were outputted independently and could be verified with each other to ensure the accuracy of the results. Moreover, the colorimetric and photothermal strategies with this probe do not require large-scale instruments, providing a promising choice for achieving the rapid field detection of AFB1.
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Affiliation(s)
- Zhaodi Fu
- Testing Technology Company of Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, China
| | - Juan Huang
- Laboratory of Micro & Nano Biosensing Technology in Food Safety, Hunan Provincial Key Laboratory of Food Science and Biotechnology, College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China.
| | - Wei Wei
- Testing Technology Company of Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, China
| | - Zhihui Wu
- Laboratory of Micro & Nano Biosensing Technology in Food Safety, Hunan Provincial Key Laboratory of Food Science and Biotechnology, College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China.
| | - Xingbo Shi
- Laboratory of Micro & Nano Biosensing Technology in Food Safety, Hunan Provincial Key Laboratory of Food Science and Biotechnology, College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China.
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Liu Z, Wang X, Li J, Zhou W, Gao H, Lu R. Construction of a three-mode sensor based on gold nanoparticles and carbon quantum dots as probes for the detection of thiosemicarbazone. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2127-2134. [PMID: 38517081 DOI: 10.1039/d4ay00256c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
In this study, ginkgo leaves were used as a carbon source to synthesize carbon quantum dots (CQDs) with uniform particle size, high fluorescence (FL) intensity and strong stability, using a hydrothermal method. FL could be quenched by the FL resonance energy transfer effect between CQDs and gold nanoparticles (AuNPs), an important FL quenching agent. The electrostatic attraction between thiosemicarbazone (TSC) and citrate on the surface of AuNPs and the formation of a stable Au-S bond between TSC and AuNPs led to the aggregation of AuNPs and thus weakened the quenching effect on CQDs and partly recovered the FL. A sensor in FL mode for the detection of TSC was constructed based on the above-mentioned FL "off" and "on" phenomena. The results showed a good linear correlation in the concentration range 0-1.75 μM, and the limit of detection was as low as 0.05 μM. In addition, the aggregation of AuNPs caused by TSC also led to a change in the absorbance curve and color of the solution; colorimetric and chrominance detection modes were also constructed using these two types of changes, with sensitive responses ranging 0-2.25 μM and 0-1.60 μM and the limits of detection of 0.03 μM and 0.08 μM, respectively. More importantly, these three detection modes obtained satisfactory recovery rates in the detection of the TSC content in river water, liquor and wheat samples, and the detection results were mutually verified (95.18% to 104.96%).
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Affiliation(s)
- Zhili Liu
- Department of Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
| | - Xiaojun Wang
- Department of Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
| | - Jing Li
- Department of Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
| | - Wenfeng Zhou
- Department of Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
| | - Haixiang Gao
- Department of Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
| | - Runhua Lu
- Department of Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
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10
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Zhang R, Liu H, Jiang L, Duan N, Xu F, Gao W, Liu Y, Zhu G, Wang J. High-sensitivity detection of low-concentration heavy metal ions in solution by multiple reflection enhanced absorption (MREA) spectroscopy. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 38419501 DOI: 10.1039/d3ay02117c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Heavy metal ions (Cr6+, Co2+, Ni2+, and Cu2+) in the electroplating and electrolysis industries are significantly related to process parameters and product quality, even at lower concentrations. Absorption spectroscopy is widely used for substance qualitative and quantitative analysis, which is an analytical method with the potential for real-time monitoring of heavy metal ions concentration in industrial processes. In this paper, a low-concentration heavy metal ion analysis method based on multiple reflection enhanced absorption (MREA) is proposed. Compared with traditional absorption, MREA has the advantages of low concentration detection limit and high-sensitivity. First, a reflective film (Al-SiO2) was prepared and a multiple reflection optical structure was designed to realize multiple parallel reflections of light in the solution medium. Then absorption spectra of low-concentration Cr6+, Co2+, Ni2+ and Cu2+ solutions were measured by MREA and traditional absorption methods. Finally, spectral bandwidth and incident light spots were optimized to obtain a superior absorption enhancement effect. The results showed that MREA could effectively increase the substance absorbance compared with traditional absorption. At the same time, with the optimal spectral bandwidth (0.4 nm) and incident light spot (1 mm), the detection limit of Cr6+, Co2+, Ni2+ and Cu2+ was reduced by 81.48%, 82.52%, 80.92% and 82.93%, respectively. The sensitivity was improved by 5-6 times, which was more obvious for low-concentration detection. In addition, the MREA method can achieve ion concentration analysis when Cr6+, Co2+, Ni2+, and Cu2+ coexist, and the linear correlative coefficients of the C-A curves were all greater than 0.999. Moreover, by adjusting reflectivity of the reflective film and the number of reflections in the optical structure, the results of the MREA method can be further optimized for the low-concentration heavy metal ion analysis. The MREA method has the advantages of simplicity, rapidity and versatility, which can provide the technical foundation for real-time monitoring method development of low-concentration heavy metal ions in industrial processes.
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Affiliation(s)
- Rong Zhang
- Water Science Research Institute, Beijing Normal University, Beijing 100875, China
| | - Hongfei Liu
- School of Physical Science and Engineering, Tongji University, Shanghai 200092, China
| | - Linhua Jiang
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Ning Duan
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Fuyuan Xu
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Wenjie Gao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yong Liu
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
| | - Guangbin Zhu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jiaxin Wang
- School of Physical Science and Engineering, Tongji University, Shanghai 200092, China
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Liu Y, Zhao W, Gao Y, Zhuo Q, Chu T, Zhou C, Huang W, Zheng Y, Li Y. Colorimetric and electrochemical dual-mode uric acid determination utilizing peroxidase-mimicking activity of CoCu bimetallic nanoclusters. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:1102-1110. [PMID: 38289093 DOI: 10.1039/d3ay02026f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
We present the preparation of CoCu bimetallic nanoclusters (Co@Cu-BNCs) by a hydrothermal and one-step pyrolysis method to build a colorimetric and electrochemical dual-mode sensing platform for uric acid (UA) detection. In the presence of H2O2, Co@Cu-BNCs with peroxidase-mimicking activity may convert colorless 3,3',5,5'-tetramethylbenzidine (TMB) to blue-colored oxidized TMB (oxTMB). However, due to the inhibitory effect of uric acid (UA) on the oxidation process of TMB, the characteristic absorption peak intensity of oxTMB decreased when UA was added into a mixed solution. In this approach, a colorimetric assay platform for the detection of UA was demonstrated, with a linear range of 0.1-195 μM and a low limit of detection of 0.06 μM (S/N ratio of 3). In addition, an even wider detection range is achieved in the electrochemical method, due to the pronounced electrocatalytic activity of Co@Cu-BNCs. The surface of the glassy carbon electrode was modified with Co@Cu-BNCs to build an electrochemical sensor for detecting UA. The sensor achieves a wider linear range from 2 to 1000 μM and a limit of detection of 0.61 μM (S/N ratio of 3). Moreover, the detection of UA in a human serum sample showed satisfactory results. The results proved that the colorimetric and electrochemical dual-mode detection platform was sensitive, convenient and accurate.
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Affiliation(s)
- Yaopeng Liu
- Institute of Selenium Science and Industry, Hubei Minzu University, Enshi, Hubei 445000, P. R. China.
- Hubei Key Laboratory of Selenium Resources Research and Biological Applications, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
- College of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
| | - Wei Zhao
- College of Intelligent Systems Science and Engineering, Hubei Minzu University, Enshi, Hubei 445000, P. R. China.
- Key Laboratory of Green Manufacturing of Super-light Elastomer Materials of State Ethnic Affairs Commission, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
| | - Yi Gao
- Institute of Selenium Science and Industry, Hubei Minzu University, Enshi, Hubei 445000, P. R. China.
- Hubei Key Laboratory of Selenium Resources Research and Biological Applications, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
- College of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
| | - Qing Zhuo
- College of Intelligent Systems Science and Engineering, Hubei Minzu University, Enshi, Hubei 445000, P. R. China.
- Key Laboratory of Green Manufacturing of Super-light Elastomer Materials of State Ethnic Affairs Commission, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
| | - Tingting Chu
- Institute of Selenium Science and Industry, Hubei Minzu University, Enshi, Hubei 445000, P. R. China.
- Hubei Key Laboratory of Selenium Resources Research and Biological Applications, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
- College of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
| | - Chengyu Zhou
- Institute of Selenium Science and Industry, Hubei Minzu University, Enshi, Hubei 445000, P. R. China.
- Hubei Key Laboratory of Selenium Resources Research and Biological Applications, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
- College of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
| | - Wensheng Huang
- Institute of Selenium Science and Industry, Hubei Minzu University, Enshi, Hubei 445000, P. R. China.
- Hubei Key Laboratory of Selenium Resources Research and Biological Applications, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
- College of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
| | - Yin Zheng
- Institute of Selenium Science and Industry, Hubei Minzu University, Enshi, Hubei 445000, P. R. China.
- Hubei Key Laboratory of Selenium Resources Research and Biological Applications, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
- College of Chemical and Environmental Engineering, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
| | - Yingru Li
- College of Intelligent Systems Science and Engineering, Hubei Minzu University, Enshi, Hubei 445000, P. R. China.
- Key Laboratory of Green Manufacturing of Super-light Elastomer Materials of State Ethnic Affairs Commission, Hubei Minzu University, Enshi, Hubei 445000, P. R. China
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12
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Du Q, Zhao X, Mei X, Zhao Y, Dong C, Li J. A sensitive sensor based on carbon dots for the determination of Fe 3+ and ascorbic acid in foods. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:939-949. [PMID: 38259231 DOI: 10.1039/d3ay02133e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
To develop a feasible, sensitive, and essential sensor is important for the identification of Fe3+ ions and ascorbic acid (AA). Herein, highly fluorescent heteroatom co-doped carbon dots (N,S-CDs) with a quantum yield (QY) of 24.6% were synthesized, using hydrothermal treatment of L-cysteine (Cys) and 1-amino-2-naphthol-4-sulfonic acid (ANSA). The fluorescence emission of the as-prepared N,S-CDs was quenched strongly by Fe3+ ions, and this was further recovered by the reduction effect of AA on Fe3+. Based on this, continuous fluorescence sensing of Fe3+ and AA with an "on-off-on" style was developed. The detection of Fe3+ and AA were in relatively wider linear ranges of 5.00-105 μmol L-1 and 4.97-54.8 μmol L-1, with a detection limit of 0.10 μmol L-1 and 2.4 nmol L-1 (S/N = 3), respectively. Then, the N,S-CDs were successfully used to measure Fe3+ ions and AA in some daily food samples, and this method exhibited some advantages over most other reported techniques in the term of response speed, quantum yield, and detection limit.
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Affiliation(s)
- Qian Du
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
| | - Xiaoyu Zhao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
| | - Xiping Mei
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
| | - Yaqin Zhao
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Chuan Dong
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Junfen Li
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
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13
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Wu Y, Ke C, Song Z, Zhu H, Guo H, Sun H, Liu M. Fluorescence and colorimetric dual-mode multienzyme cascade nanoplatform based on CuNCs/FeMn-ZIF-8/PCN for detection of sarcosine. Analyst 2024; 149:935-946. [PMID: 38193145 DOI: 10.1039/d3an01984e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
It is critical to develop a highly efficient and sensitive method for detecting the biomarker sarcosine (SA) of prostate cancer due to its importance for men's health. In our work, a fluorescence (FL) and colorimetric dual-mode multienzyme cascade nanoplatform for SA detection was designed and constructed. CuNCs/FeMn-ZIF-8/PCN nanocomposites with high FL properties and peroxidase-like activity were successfully prepared by encapsulating copper nanoclusters (CuNCs) into FeMn-ZIF-8 and then loaded onto P-doped graphitic carbon nitride (PCN). Furthermore, the nanocomposites served as carriers for the immobilization of sarcosine oxidase (SOX) to construct a high-efficiency dual-mode multienzyme cascade nanoplatform CuNCs/SOX@FeMn-ZIF-8/PCN for the detection of SA. The intermediate H2O2 generated in the cascade caused the FL quenching of nanocomposites and the discoloration of 3,3',5,5'-tetramethylbenzidin. The linear ranges for SA detection in the dual-mode system were 1-100 μM (FL) and 1-200 μM (colorimetric), with detection limits of 0.34 and 0.59 μM, respectively. This nanoplatform exhibited notable repeatability, specificity, and stability, making it suitable for detecting sarcosine in real human urine samples. Therefore, this dual-mode multienzyme cascade nanoplatform would have a potential applicative prospect for detecting SA and other biomarkers in real clinical samples.
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Affiliation(s)
- Yu Wu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan, 430068, People's Republic of China
- Hubei Key Laboratory of Industrial Microbiology, School of Biological Engineering and Food, Hubei University of Technology, Wuhan, 430068, People's Republic of China
| | - Chenxi Ke
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan, 430068, People's Republic of China
- Hubei Key Laboratory of Industrial Microbiology, School of Biological Engineering and Food, Hubei University of Technology, Wuhan, 430068, People's Republic of China
| | - Zichen Song
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan, 430068, People's Republic of China
- Hubei Key Laboratory of Industrial Microbiology, School of Biological Engineering and Food, Hubei University of Technology, Wuhan, 430068, People's Republic of China
| | - Hongda Zhu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan, 430068, People's Republic of China
- Hubei Key Laboratory of Industrial Microbiology, School of Biological Engineering and Food, Hubei University of Technology, Wuhan, 430068, People's Republic of China
| | - Huiling Guo
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan, 430068, People's Republic of China
- Hubei Key Laboratory of Industrial Microbiology, School of Biological Engineering and Food, Hubei University of Technology, Wuhan, 430068, People's Republic of China
| | - Hongmei Sun
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan, 430068, People's Republic of China
- Hubei Key Laboratory of Industrial Microbiology, School of Biological Engineering and Food, Hubei University of Technology, Wuhan, 430068, People's Republic of China
| | - Mingxing Liu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan, 430068, People's Republic of China
- Hubei Key Laboratory of Industrial Microbiology, School of Biological Engineering and Food, Hubei University of Technology, Wuhan, 430068, People's Republic of China
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14
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Balasubramaniyan NG, Perumal P. Highly efficient electrochemical detection of H 2O 2 utilizing an innovative copper porphyrinic nanosheet decorated bismuth metal-organic framework modified electrode. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:624-638. [PMID: 38198128 DOI: 10.1039/d3ay01804k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
The ability to detect hydrogen peroxide is important due to the presence in biological systems. Researchers are highly interested in developing efficient electrochemical hydrogen peroxide sensors. Metal-organic frameworks (MOFs) with their composites, an emerging class of porous materials, are ideal candidates for heterogeneous catalysts because of their versatile functionalities. Using a facile solvothermal reaction, we fabricated a 2D Cu-TCPP nanosheet uniformly grown on a 3D Bi-MOF. The process takes advantage of the large surface area and pore volume of the Bi-MOF while maintaining the crystallinity of Bi-BTC when Cu-TCPP is added to the surface. The sensor was fabricated by depositing the Bi-BTC-Cu-TCPP nanocomposites on a glassy carbon electrode to conduct electrochemical measurements such as cyclic voltammetry and electrochemical impedance spectroscopy. Finally, differential pulse voltammetry was utilized to investigate the effect of hydrogen peroxide on the electrochemical activity of Bi-BTC-Cu-TCPP deposited on a glassy carbon electrode. This electrode showed high electrochemical performance activity for the reduction of hydrogen peroxide. The sensor showed a linear response to H2O2 in the 10-120 μM concentration range, with a detection limit of 0.20 μM. The sensor was also stable and selective for H2O2 in the presence of other interfering species. This work demonstrates the potential of nanocomposite-based electrochemical sensors for sensitive and selective detection of H2O2. Besides, the modified electrode has many advantages, including remarkable catalytic activity, long-term stability, good reproducibility, and a good signal response during H2O2 reduction.
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Affiliation(s)
- Nandha Gopal Balasubramaniyan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu 603 203, India.
| | - Panneerselvam Perumal
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu 603 203, India.
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15
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Wang XJ, Long Y, Wei CW, Gao SQ, Lin YW. Peroxidase activity of a Cu-Fe bimetallic hydrogel and applications for colorimetric detection of ascorbic acid. Phys Chem Chem Phys 2024; 26:1077-1085. [PMID: 38098362 DOI: 10.1039/d3cp05403a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
A Cu-Fe bimetallic hydrogel (2-QF-CuFe-G) was constructed through a simple method. The 2-QF-CuFe-G metallohydrogel possesses excellent peroxidase-like activity to catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of H2O2. The catalytic mechanism was confirmed by the addition of •OH radical scavenger isopropyl alcohol (IPA), tert-butyl alcohol (TBA) and ˙OH trapping agent terephthalic acid (TA). Remarkably, the resultant blue ox-TMB system can be used to selectively and sensitively detect ascorbic acid (AA) with an LOD of 0.93 μM in the range of 4-36 μM through the colorimetric method. Moreover, the assay based on the 2-QF-CuFe-G metallohydrogel can be successfully applied to detect AA in fresh fruits.
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Affiliation(s)
- Xiao-Juan Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Yan Long
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Chuan-Wan Wei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Shu-Qin Gao
- Key Lab of Protein Structure and Function of Universities in Hunan Province, University of South China, Hengyang 421001, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
- Key Lab of Protein Structure and Function of Universities in Hunan Province, University of South China, Hengyang 421001, China
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16
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Hu J, Liang L, He M, Lu Y. Sensitive and Direct Analysis of Pseudomonas aeruginosa through Self-Primer-Assisted Chain Extension and CRISPR-Cas12a-Based Color Reaction. ACS OMEGA 2023; 8:34852-34858. [PMID: 37779973 PMCID: PMC10536833 DOI: 10.1021/acsomega.3c04180] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/31/2023] [Indexed: 10/03/2023]
Abstract
Pseudomonas aeruginosa (P. aeruginosa) is a common opportunistic Gram-negative pathogen that may cause infections to immunocompromised patients. However, sensitive and reliable analysis of P. aeruginosa remains a huge challenge. In this method, target recognition assists the formation of a self-primer and initiates single-stranded chain production. The produced single-stranded DNA chain is identified by CRISPR-Cas12a, and consequently, the trans-cleavage activity of the Cas12a enzyme is activated to parallelly digest Ag+ aptamer sequences that are chelated with silver ions (Ag+). The released Ag+ reacted with 3,3',5,5'-tetramethylbenzidine (TMB) for coloring. Compared with the traditional color developing strategies, which mainly rely on the DNA hybridization, the color developing strategy in this approach exhibits a higher efficiency due to the robust trans-cleavage activity of the Cas12a enzyme. Consequently, the method shows a low limit of detection of a wide detection of 5 orders of magnitudes and a low limit of detection of 21 cfu/mL, holding a promising prospect in early diagnosis of infections. Herein, we develop a sensitive and reliable method for direct and colorimetric detection of P. aeruginosa by integrating self-primer-assisted chain production and CRISPR-Cas12a-based color reaction and believe that the established approach will facilitate the development of bacteria-analyzing sensors.
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Affiliation(s)
- Jiangchun Hu
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
| | - Ling Liang
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
| | - Mingfang He
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
| | - Yongping Lu
- Science
and Technology Innovation Center, Guangyuan
Central Hospital, Guangyuan
City 628000, Sichuan
Province, China
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17
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Zhang L, Bi X, Liu X, He Y, Li L, You T. Advances in the application of metal-organic framework nanozymes in colorimetric sensing of heavy metal ions. NANOSCALE 2023; 15:12853-12867. [PMID: 37490007 DOI: 10.1039/d3nr02024j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Nanozymes, which can be defined as nanomaterials with excellent catalytic function, are well known to the scientific community due to their distinct merits, such as low cost and high stability, which render them preferable to natural enzymes. As porous organic-inorganic coordination materials, metal-organic frameworks (MOFs) possess a large number of active sites and thus can effectively mimic the properties of natural enzymes. Recently, MOF-based nanozymes have also exhibited good application potential for the analysis of heavy metal ions. In comparison to the traditional detection methods for heavy metal ions, nanozyme-based colorimetric sensing permits intuitive visual analysis by using relatively simple instruments, facilitating rapid and simple on-site screening. In this minireview, the preparation of MOF-based nanozymes and the different nanozyme activity types are briefly described, such as peroxidase-like and oxidase-like, and the relevant catalytic mechanisms are elaborated. Based on this, different response mechanisms of MOF-based colorimetric methods to heavy metal ions, such as turn-off, turn-on, and turn-off-on, are discussed. In addition, the colorimetric sensing applications of MOF-based nanozymes for the detection of heavy metal ions are summarized. Finally, the current research status of MOF-based nanozymes and the future development direction are discussed.
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Affiliation(s)
- Li Zhang
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Xiaoya Bi
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Xiaohong Liu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Yi He
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Libo Li
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Tianyan You
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
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18
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Cao W, Shan S, Xing K, Jing X, Peng J, Xiao X, Liu D, Xia J, Lai W. Novel rapid detection of melamine based on the synergistic aggregation of gold nanoparticles. Food Chem 2023; 428:136789. [PMID: 37423110 DOI: 10.1016/j.foodchem.2023.136789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 06/26/2023] [Accepted: 07/01/2023] [Indexed: 07/11/2023]
Abstract
A simple and rapid colorimetric method for the detection of melamine in milk samples is described. Polythymidine oligonucleotide was adsorbed on to the surface of gold nanoparticles (AuNPs), protecting it from aggregation. In the presence of melamine, polythymidine oligonucleotide combined with melamine formed a double-strand DNA-like structure, allowing AuNPs aggregation. In the presence of positively charged SYBR Green I (SG I), AuNPs were further aggregated. In the presence of melamine and SG I, aggregation of AuNPs was synergistic. Thus, in this principle, melamine can be detected visually. Plasmon resonance peak changes enabled detection of melamine quantitatively using UV-vis spectroscopy. The limit of detection for this colorimetric method was 16 μg L-1 with a good linear range from 19.5 μg L-1 to 1.25 × 103 μg L-1, and detection took only 1 min. The method was successfully applied for detection of melamine in milk samples.
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Affiliation(s)
- Wenkai Cao
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Shan Shan
- College of Life Science, National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China
| | - Keyu Xing
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, China
| | - Xudong Jing
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Xiaoyue Xiao
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, 555 East Beijing Road, Nanchang 330029, China.
| | - Jun Xia
- Jiangxi Agricultural Technology Extension Center, Animal Epidemic Control Building, 698 Gaoxin Seventh Road, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China.
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Huang J, Dong R, Habibul M, Zhang Y, Guan M, Li G. An electrochemiluminescence aptasensor based on poly(aniline-luminol)/graphene oxide/chitosan for ultra-sensitive detection of Hg2+. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04687-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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