Ni-Pt nanozyme-mediated relaxation and colorimetric sensor for dual-modality detection of norovirus
Copyright © 2023. Published by Elsevier B.V..
An NiPt nanozyme-mediated relaxation and colorimetric sensor is developed for dual-modality detection of norovirus (NoV). The relaxation modality is based on the "catalase-like" activity of the NiPt nanozyme, which adjusts the hydrogen peroxide (H2O2) mediated Fe (II)/Fe(III) conversion, thereby changing the relaxation signal. Poly-γ-glutamic acid (MW ≈ 1w) can enhance the relaxivity of Fe(III) (r1 = 7.11 mM-1 s-1; r2 = 8.94 mM-1 s-1). The colorimetric modality exploits the "peroxidase-like" activity of the NiPt nanozyme, which can catalyze the oxidation of colorless 3, 3', 5, 5'-tetramethylbenzidine (TMB) to blue oxTMB in H2O2. Under optimal conditions, the relaxation modality exhibits a wide working range (1.0 × 101-1.0 × 104 fM) and a limit of detection (LOD) of 4.7 fM (equivalent to 2820 copies/μL). The spiked recoveries range from 99.593 to 106.442 %, and the relative standard deviation (RSD) is less than 5.124 %. The colorimetric modality exhibited the same working range with a lower LOD of 2.9 fM (equivalent to 1740 copies/μL) and an RSD of less than 2.611 %. Additionally, the recombinase polymerase amplification reaction enabled the detection of low NoV levels in food samples with a working range of 102-106 copies/mL and LOD of 102 copies/mL. The accuracy of the sensor in the analysis of spiked samples is consistent with the gold standard method (real-time quantitative reverse transcription-polymerase chain reaction), demonstrating the high accuracy and practical utility of the sensor.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:914 |
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| Enthalten in: |
The Science of the total environment - 914(2024) vom: 01. Jan., Seite 169738 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Huang, Lei [VerfasserIn] |
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| Links: |
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| Themen: |
BBX060AN9V |
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| Anmerkungen: |
Date Completed 26.01.2024 Date Revised 26.01.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.scitotenv.2023.169738 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a An NiPt nanozyme-mediated relaxation and colorimetric sensor is developed for dual-modality detection of norovirus (NoV). The relaxation modality is based on the "catalase-like" activity of the NiPt nanozyme, which adjusts the hydrogen peroxide (H2O2) mediated Fe (II)/Fe(III) conversion, thereby changing the relaxation signal. Poly-γ-glutamic acid (MW ≈ 1w) can enhance the relaxivity of Fe(III) (r1 = 7.11 mM-1 s-1; r2 = 8.94 mM-1 s-1). The colorimetric modality exploits the "peroxidase-like" activity of the NiPt nanozyme, which can catalyze the oxidation of colorless 3, 3', 5, 5'-tetramethylbenzidine (TMB) to blue oxTMB in H2O2. Under optimal conditions, the relaxation modality exhibits a wide working range (1.0 × 101-1.0 × 104 fM) and a limit of detection (LOD) of 4.7 fM (equivalent to 2820 copies/μL). The spiked recoveries range from 99.593 to 106.442 %, and the relative standard deviation (RSD) is less than 5.124 %. The colorimetric modality exhibited the same working range with a lower LOD of 2.9 fM (equivalent to 1740 copies/μL) and an RSD of less than 2.611 %. Additionally, the recombinase polymerase amplification reaction enabled the detection of low NoV levels in food samples with a working range of 102-106 copies/mL and LOD of 102 copies/mL. The accuracy of the sensor in the analysis of spiked samples is consistent with the gold standard method (real-time quantitative reverse transcription-polymerase chain reaction), demonstrating the high accuracy and practical utility of the sensor | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Colorimetry | |
| 650 | 4 | |a Dual-modality | |
| 650 | 4 | |a Nanozyme | |
| 650 | 4 | |a Norovirus | |
| 650 | 4 | |a Paramagnetic ions | |
| 650 | 4 | |a Relaxation | |
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| 700 | 1 | |a Zhang, Xue |e verfasserin |4 aut | |
| 700 | 1 | |a Mao, Zefeng |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Sha |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Yanchun |e verfasserin |4 aut | |
| 700 | 1 | |a Ren, Shuyue |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Huanying |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Baolin |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Zhixian |e verfasserin |4 aut | |
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