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Zhao W, Huang C, Zhao B, Wen J, Lu Y, Li N, He Q, Bao J, Zhang X, Pi Z, Dong Y, Chen Y. Magnetic Relaxation Switching Immunosensors via a Click Chemistry-Mediated Controllable Aggregation Strategy for Direct Detection of Chlorpyrifos. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:1727-1734. [PMID: 36638207 DOI: 10.1021/acs.jafc.2c06858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Chlorpyrifos (CPF) is the most frequently found organophosphate pesticide residue in solid food samples and can cause increasing public concerns about potential risks to human health. Traditional detection signals of such small molecules are mostly generated by target-mediated indirect conversion, which tends to be detrimental to sensitivity and accuracy. Herein, a novel magnetic relaxation switching detection platform was developed for target-mediated direct and sensitive detection of CPF with a controllable aggregation strategy based on a bioorthogonal ligation reaction between tetrazine (Tz) and trans-cyclooctene (TCO) ligands. Under optimal conditions, this sensor can achieve a detection limit of 37 pg/mL with a broad linear range of 0.1-500 ng/mL in 45 min, which is approximately 51-fold lower than that of the gas chromatography analysis and 13-fold lower than that of the enzyme-linked immunosorbent assay. The proposed click chemistry-mediated controllable aggregation strategy is direct, rapid, and sensitive, indicating great potential for residue screening in food matrices.
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Affiliation(s)
- Weiqi Zhao
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070 Hubei, China
| | - Chenxi Huang
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070 Hubei, China
| | - Binjie Zhao
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070 Hubei, China
| | - Junping Wen
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070 Hubei, China
| | - Yingying Lu
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070 Hubei, China
| | - Nan Li
- Daye Public Inspection and Test Center, Daye, 435100 Hubei, China
| | - Qifu He
- Daye Public Inspection and Test Center, Daye, 435100 Hubei, China
| | - Junwang Bao
- Daye Public Inspection and Test Center, Daye, 435100 Hubei, China
| | - Xiuwen Zhang
- Daye Public Inspection and Test Center, Daye, 435100 Hubei, China
| | - Zhixiong Pi
- Daye Public Inspection and Test Center, Daye, 435100 Hubei, China
| | - Yongzhen Dong
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070 Hubei, China
| | - Yiping Chen
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070 Hubei, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
- Shenzhen Institute of Food Nutrition and Health, Huazhong Agricultural University, Shenzhen 518120, Guangdong, China
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Selby W, Garland P, Mastikhin I. A simple portable magnetic resonance technique for characterizing circular couette flow of non-Newtonian fluids. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2022; 345:107325. [PMID: 36370547 DOI: 10.1016/j.jmr.2022.107325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/13/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
In this work, we expand on past portable magnetic resonance flow methods and propose a novel method for characterizing circular (laminar) Couette flow of non-Newtonian fluids. Symmetry of the flow system combined with a constant magnetic field gradient leads to phase interference, affecting the signal magnitude, and net phase cancellation when averaging across the excited slice, preventing the use of phase-sensitive methods. Therefore, we utilize the dependence of signal magnitude at variable echo times and shear rates to characterize rheological properties. Theoretical equations governing the velocity distributions of fluids that obey a simple power-law model are used to obtain integral expressions for signal magnitude. Integral expressions can be simplified by approximating a thin excited slice or complete excitation of the Couette cell depending on experimental parameters. With simple data acquisition and analysis procedures employed, our measurements of the flow behavior indices of non-Newtonian xanthan gum dispersions are in close agreement with conventional rheological magnetic resonance measurements.
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Affiliation(s)
- William Selby
- MRI Research Centre, Department of Physics, University of New Brunswick, 8 Bailey Drive, Fredericton E3B 5A3, NB, Canada
| | - Phil Garland
- Department of Mechanical Engineering, University of New Brunswick, 15 Dineen Drive, Fredericton E3B 5A3, NB, Canada
| | - Igor Mastikhin
- MRI Research Centre, Department of Physics, University of New Brunswick, 8 Bailey Drive, Fredericton E3B 5A3, NB, Canada.
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Milc KW, Serial MR, Philippi J, Dijksman JA, van Duynhoven JPM, Terenzi C. Validation of temperature-controlled rheo-MRI measurements in a submillimeter-gap Couette geometry. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2022; 60:606-614. [PMID: 33788305 DOI: 10.1002/mrc.5157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 06/12/2023]
Abstract
A temperature-controlled submillimeter-gap (500 μm) rheo-magnetic resonance imaging (MRI) Couette cell has been developed to measure confined flow of soft structured materials under controlled temperature. The proposed setup enables performing rheo-MRI measurements using (i) a spatially uniform temperature control over the range 15°C to 40°C and (ii) a high spatial resolution up to 10 μm, as a consequence of the improved mechanical stability of the in-house developed rotating elements. Here, we demonstrate the performance of the cell for the rheo-MRI velocimetry study of a thixotropic fat crystal dispersion, a complex fluid commonly used in food manufacturing. The submillimeter-gap geometry and variable temperature capability of the cell enable observing the effects of shear- and temperature-induced fat recrystallization on both wall slip and shear banding under strongly confined flow. Our improved rheo-MRI setup opens new perspectives for the fundamental study of strongly confined flow, cooperative effects, and the underlying interparticle interactions and for ultimately aiding optimization of products involved in spreading/extrusion, such as cosmetics and foods.
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Affiliation(s)
- Klaudia W Milc
- Laboratory of Biophysics, Wageningen University, Wageningen, The Netherlands
| | - Maria R Serial
- Laboratory of Biophysics, Wageningen University, Wageningen, The Netherlands
| | - John Philippi
- Laboratory of Biophysics, Wageningen University, Wageningen, The Netherlands
| | - Joshua A Dijksman
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University, Wageningen, The Netherlands
| | - John P M van Duynhoven
- Laboratory of Biophysics, Wageningen University, Wageningen, The Netherlands
- Science and Technology, Unilever Foods Innovation Centre Hive, Wageningen, The Netherlands
| | - Camilla Terenzi
- Laboratory of Biophysics, Wageningen University, Wageningen, The Netherlands
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Nikolaeva T, Vergeldt FJ, Serial R, Dijksman JA, Venema P, Voda A, van Duynhoven J, Van As H. High Field MicroMRI Velocimetric Measurement of Quantitative Local Flow Curves. Anal Chem 2020; 92:4193-4200. [PMID: 32052954 PMCID: PMC7081226 DOI: 10.1021/acs.analchem.9b03216] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Performing
rheo-microMRI velocimetry at a high magnetic field with
strong pulsed field gradients has clear advantages in terms of (chemical)
sensitivity and resolution in velocities, time, and space. To benefit
from these advantages, some artifacts need to be minimized. Significant
sources of such artifacts are chemical shift dispersion due to the
high magnetic field, eddy currents caused by the pulsed magnetic field
gradients, and possible mechanical instabilities in concentric cylinder
(CC) rheo-cells. These, in particular, hamper quantitative assessment
of spatially resolved velocity profiles needed to construct local
flow curves (LFCs) in CC geometries with millimeter gap sizes. A major
improvement was achieved by chemical shift selective suppression of
signals that are spectroscopically different from the signal of interest.
By also accounting for imperfections in pulsed field gradients, LFCs
were obtained that were virtually free of artifacts. The approach
to obtain quantitative LFCs in millimeter gap CC rheo-MRI cells was
validated for Newtonian and simple yield stress fluids, which both
showed quantitative agreement between local and global flow curves.
No systematic effects of gap size and rotational velocity on the viscosity
of a Newtonian fluid and yield stress of a complex fluid could be
observed. The acquisition of LFCs during heterogeneous and transient
flow of fat crystal dispersion demonstrated that local constitutive
laws can be assessed by rheo-microMRI at a high magnetic field in
a noninvasive, quantitative, and real-time manner.
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Affiliation(s)
- Tatiana Nikolaeva
- Laboratory of Biophysics, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.,MAGNEFY, Stippeneng 4, 6708 WE , Wageningen, The Netherlands
| | - Frank J Vergeldt
- Laboratory of Biophysics, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.,MAGNEFY, Stippeneng 4, 6708 WE , Wageningen, The Netherlands
| | - Raquel Serial
- Laboratory of Biophysics, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.,MAGNEFY, Stippeneng 4, 6708 WE , Wageningen, The Netherlands
| | - Joshua A Dijksman
- Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Paul Venema
- Physics and Physical Chemistry of Foods, Wageningen University & Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - Adrian Voda
- Unilever Food Innovation Centre, OBronland 14, 6708 WH , Wageningen, The Netherlands
| | - John van Duynhoven
- Laboratory of Biophysics, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.,Unilever Food Innovation Centre, OBronland 14, 6708 WH , Wageningen, The Netherlands.,MAGNEFY, Stippeneng 4, 6708 WE , Wageningen, The Netherlands
| | - Henk Van As
- Laboratory of Biophysics, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.,MAGNEFY, Stippeneng 4, 6708 WE , Wageningen, The Netherlands
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