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Jiang F, Jin N, Wang L, Wang S, Li Y, Lin J. A multimetallic nanozyme enhanced colorimetric biosensor for Salmonella detection on finger-actuated microfluidic chip. Food Chem 2024; 460:140488. [PMID: 39043075 DOI: 10.1016/j.foodchem.2024.140488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 07/13/2024] [Accepted: 07/14/2024] [Indexed: 07/25/2024]
Abstract
Salmonella screening is essential to avoid food poisoning. A simple, fast and sensitive colorimetric biosensor was elaborately developed for Salmonella detection on a microfluidic chip through limiting air chambers for precise air control, switching rotary valves for accurate fluid selection, a convergence-and-divergence passive micromixer and an extrusion-and-suction active micromixer for efficient fluid mixing, and immune gold@platinum palladium nanocatalysts for effective signal amplification. The mixture of bacteria, immune magnetic nanobeads and nanocatalysts was first rapidly mixed to form nanobead-bacteria-nanocatalyst conjugates and magnetically separated for enrichment. After washing with water, the conjugates were used to catalyze colorless substrate and blue product was finally analyzed using ImageJ for quantifying bacterial concentration. The finger-actuated microfluidic chip enabled designated control of designated fluids in designated places towards designated directions by simple press-release operations on designated air chambers without any external power. Under optimal conditions, this sensor could detect Salmonella at 45 CFU/mL in 25 min.
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Affiliation(s)
- Fan Jiang
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Nana Jin
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Lei Wang
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Siyuan Wang
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Yanbin Li
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA
| | - Jianhan Lin
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China.
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Paterson R, Fahy LE, Arca E, Dixon C, Wills CY, Yan H, Griffiths A, Collins SM, Wu K, Bourne RA, Chamberlain TW, Knight JG, Doherty S. Amine-modified polyionic liquid supports enhance the efficacy of PdNPs for the catalytic hydrogenation of CO 2 to formate. Chem Commun (Camb) 2023; 59:13470-13473. [PMID: 37877311 DOI: 10.1039/d3cc04987f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Palladium nanoparticles stabilised by aniline modified polymer immobilised ionic liquid is a remarkably active catalyst for the hydrogenation of CO2 to formate; the initial TOF of 500 h-1 is markedly higher than either unmodified catalyst or its benzylamine and N,N-dimethylaniline modified counterparts and is among the highest to be reported for a PdNP-based catalyst.
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Affiliation(s)
- Reece Paterson
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Luke E Fahy
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Elisabetta Arca
- School of Mathematics, Statistics and Physics, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Casey Dixon
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Corinne Y Wills
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Han Yan
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, UK
| | - Anthony Griffiths
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, UK
| | - Sean M Collins
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, UK
| | - Kejun Wu
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, UK
| | - Richard A Bourne
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, UK
| | - Thomas W Chamberlain
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, UK
| | - Julian G Knight
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Simon Doherty
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
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Majid Z, Zhang Q, Yang Z, Che H, Cheng N. A Multi-Enzyme Cascade Response for the Colorimetric Recognition of Organophosphorus Pesticides Utilizing Core-Shell Pd@Pt Nanoparticles with High Peroxidase-like Activity. Foods 2023; 12:3319. [PMID: 37685251 PMCID: PMC10486685 DOI: 10.3390/foods12173319] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 08/06/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023] Open
Abstract
In modern agricultural practices, organophosphorus pesticides or insecticides (OPs) are regularly used to restrain pests. Their limits are closely monitored since their residual hinders the capability of acetylcholinesterase (AChE) and brings out a threatening accumulation of the neurotransmitter acetylcholine (ACh), which affects human well-being. Therefore, spotting OPs in food and the environment is compulsory to prevent human health. Several techniques are available to identify OPs but encounter shortcomings like time-consuming, operating costs, and slow results achievement, which calls for further solutions. Herein, we present a rapid colorimetric sensor for quantifying OPs in foods using TMB as a substrate, a multi-enzyme cascade system, and the synergistic property of core-shell Palladinum@Platinum (Pd@Pt) nanoparticles. The multi-enzyme cascade response framework is a straightforward and effective strategy for OPs recognition and can resolve the previously mentioned concerns. Numerous OPs, including Carbofuran, Malathion, Parathion, Phoxim, Rojor, and Phosmet, were successfully quantified at different concentrations. The cascade method established using Pd@Pt had a simple and easy operation, a lower detection limit range of (1-2.5 ng/mL), and a short detection time of about 50 min. With an R2 value of over 0.93, OPs showed a linear range of 10-200 ng/mL, portraying its achievement in quantifying pesticide residue. Lastly, the approach was utilized in food samples and recovered more than 80% of the residual OPs.
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Affiliation(s)
- Zainabu Majid
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Z.M.); (Q.Z.); (Z.Y.); (H.C.)
| | - Qi Zhang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Z.M.); (Q.Z.); (Z.Y.); (H.C.)
| | - Zhansen Yang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Z.M.); (Q.Z.); (Z.Y.); (H.C.)
| | - Huilian Che
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Z.M.); (Q.Z.); (Z.Y.); (H.C.)
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Nan Cheng
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Z.M.); (Q.Z.); (Z.Y.); (H.C.)
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Dadigala R, Bandi R, Han SY, Kwon GJ, Lee SH. Rapid in-situ growth of enzyme-mimicking Pd nanoparticles on TEMPO-oxidized nanocellulose for the efficient detection of ascorbic acid. Int J Biol Macromol 2023; 234:123657. [PMID: 36796553 DOI: 10.1016/j.ijbiomac.2023.123657] [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: 11/21/2022] [Revised: 02/03/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023]
Abstract
Rapid, efficient and green method of Pd nanoparticles (PdNPs) synthesis on TEMPO-oxidized cellulose nanofibril (TCNF) is demonstrated here. The nanohybrid (PdNPs/TCNF) exhibited peroxidase and oxidase-like activities evident by the oxidation of three chromogenic substrates. Enzyme kinetic studies using 3,3',5,5'-Tetramethylbenzidine (TMB) oxidation uncovered the excellent kinetic parameters (low Km and high Vmax) and good specific activities of 215 U/g and 107 U/g for peroxidase and oxidase-like activities, respectively. A colorimetric assay for ascorbic acid (AA) detection is proposed based on its ability to reduce oxidized TMB to its colorless form. However, presence of nanozyme caused re-oxidation of TMB to its blue colored form within few minutes resulting in time limitation and inaccurate detection. Thanks to the film forming nature of TCNF; this limitation was overcome by employing PdNPs/TCNF film strips that can be easily removed before AA addition. The assay allowed AA detection in the linear range of 0.25-10 μM with a detection limit of 0.039 μM. The results of AA detection in commercial beverages and vitamin C tablets are matching with the specified values. Further the nanozyme exhibited high tolerance to pH (2-10) and temperature (up to 80 °C) and good recyclability for five cycles.
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Affiliation(s)
- Ramakrishna Dadigala
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Rajkumar Bandi
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Song-Yi Han
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Gu-Joong Kwon
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea; Kangwon Institute of Inclusion Technology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Seung-Hwan Lee
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea; Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea.
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Dadigala R, Bandi R, Alle M, Park CW, Han SY, Kwon GJ, Lee SH. Effective fabrication of cellulose nanofibrils supported Pd nanoparticles as a novel nanozyme with peroxidase and oxidase-like activities for efficient dye degradation. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129165. [PMID: 35739705 DOI: 10.1016/j.jhazmat.2022.129165] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/13/2022] [Accepted: 05/14/2022] [Indexed: 06/15/2023]
Abstract
Nanozyme-based dye degradation methods are promising for the remediation of water pollution. Though Pd nanoparticles (PdNPs) are known to act as nanozymes, their dye degradation capability has not been investigated. Low nanozyme activities, easy aggregation, difficulties in recovery and reuse are the major challenges in achieving this. For the first time, cellulose nanofibrils-supported PdNPs (PdNPs/PCNF) as a novel nanozyme with good peroxidase and oxidase-mimicking activities and easy recyclability is explored for dye degradation. An efficient and rapid method of PdNPs/PCNF preparation was demonstrated by adjusting the pH and microwave irradiation. Enzyme kinetic studies revealed good kinetic parameters and specific activities of 415 and 277 U/g for peroxidase and oxidase, respectively. PdNPs/PCNF offered 99.64% degradation of methylene blue within 12 min (0.468 min-1) with 0.4 M H2O2 at pH 5.0. Mechanistic studies revealed the involvement of hydroxyl and superoxide radicals. Owing to the network-like structure of PCNF, films and foams were prepared, their dye degradation potentials were compared, and recyclability was tested. Successful degradation of mixed dye solutions and spiked real water samples was achieved and a continuous flow method was demonstrated using a foam-packed column.
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Affiliation(s)
- Ramakrishna Dadigala
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Rajkumar Bandi
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Madhusudhan Alle
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Chan-Woo Park
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Song-Yi Han
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Gu-Joong Kwon
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea; Kangwon Institute of Inclusion Technology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Seung-Hwan Lee
- Institute of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea; Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea.
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Zhang J, Li Z, Li H, Dai G, Luo F, Chu Z, Geng X, Zhang F, Wang Q. Construction of Pd Single Site Anchored on Nitrogen-Doped Porous Carbon and Its Application for Total Antioxidant Level Detection. NANOSCALE RESEARCH LETTERS 2022; 17:54. [PMID: 35596011 PMCID: PMC9123115 DOI: 10.1186/s11671-022-03693-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
Natural enzymes have excellent catalytic activity. However, due to their unstable nature and high cost, current research has turned to the synthesis and development of enzyme-like nanomaterials and single-atomic nanozymes. In this study, a single-atomic palladium-loaded nitrogen-doped porous carbon catalyst (SA-Pd/NPC) was prepared and used as a mimetic peroxidase to catalyze the substrates oxidation. The catalytic capability of the SA-Pd/NPC was tested by the TMB-H2O2 system, and it expressed a superior catalytic capability owing to the plentiful catalytic centers of the single-atom Pd, its high porosity, the large specific surface area, and the strong electron transfer capability of the NPC. For the color reaction of TMB, thiol antioxidants (e.g., glutathione, GSH) and non-thiol antioxidants (e.g., ascorbic acid, AA) are suitable for different inhibition mechanisms. GSH and AA are typical substances of these two main antioxidant types, respectively. Here, we demonstrate that this prepared catalyst could be used to simultaneously determine a variety of major known physiologically relevant thiol-containing and thiol-free antioxidants, accompanied by a blue color gradient change with UV-Vis spectra at 652 nm through the SA-Pd/NPC-catalyzed TMB-H2O2 system. Linear responses to GSH and AA could be obtained in the concentration ranges of 0.01-0.10 mM and 1-13 μM (both R2 values were greater than 0.970), respectively, while the limits of detection were 3 μM and 0.3 μM, respectively. The ability of the nanozyme to detect overall antioxidant levels (TAL) was also confirmed in subsequent tests on artificial saliva and biological samples.
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Affiliation(s)
- Jingwen Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Zhi Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Hui Li
- School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai, 200240, People's Republic of China
| | - Ge Dai
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Feifei Luo
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Zhaohui Chu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Xing Geng
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Fan Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, People's Republic of China.
| | - Qingjiang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, People's Republic of China.
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