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Yao C, Hu Y, Liu Q, Liu JM, Ji X, Lv H, Wang S. Nanobody mediated dual-mode immunoassay for detection of peanut allergen Ara h 3. Food Chem 2024; 436:137679. [PMID: 37826894 DOI: 10.1016/j.foodchem.2023.137679] [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: 05/31/2023] [Revised: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 10/14/2023]
Abstract
To improve the performance of peanut allergen Ara h 3 detection, depending on boron and nitrogen carbon dots (B/N-CDs), a nanobody (Nb) mediated dual-mode immunoassay was established, which combines the dominance of colorimetry with ratiometric fluorescence techniques. With the catalysis of Horseradish peroxidase (HRP), the oxidization of o-phenylenediamine (o-PD) in the presence of H2O2, leading to the production of yellow 2,3-diaminophenolazine (DAP) with an absorption peak at 431 nm. Owing to inner filter effect (IFE), DAP quenched the fluorescence of B/N-CDs at 426 nm, and it emerged a new emission peak at 549 nm. The fluorescence intensity ratio and absorption intensity can be utilized for quantitative analysis of Ara h 3 concentration. Under optimal conditions, the detection limits were 6.61 and 9.79 ng·mL-1, respectively. The dual-mode immunoassay was assessed containing specificity, stability, reproducibility, and practicability. This method paved the way for sensitive detection of Ara h 3 without background Interference.
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Affiliation(s)
- Chixuan Yao
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Yaozhong Hu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Qisijing Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Jing-Min Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Xuemeng Ji
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Huan Lv
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China.
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Raza S, Wen H, Peng Y, Zhang J, Li X, Liu C. Fabrication of SiO2 modified biobased hydrolyzed hollow polymer particles and their applications as a removal of methyl orange dye and bisphenol-A. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110199] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Na M, Zhang S, Liu J, Ma S, Han Y, Wang Y, He Y, Chen H, Chen X. Determination of pathogenic bacteria-Bacillus anthrax spores in environmental samples by ratiometric fluorescence and test paper based on dual-emission fluorescent silicon nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121956. [PMID: 31884372 DOI: 10.1016/j.jhazmat.2019.121956] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 12/12/2019] [Accepted: 12/21/2019] [Indexed: 06/10/2023]
Abstract
Many lanthanide ions-based probes have been widely used for detecting anthrax spores biomarker-dipicolinic acid (DPA). However, little work has realized detection of bacillus anthrax spores in real environmental samples. In this work, a novel ratiometric fluorescent nanoprobe based on europium (Eu)-doped silicon nanoparticles (Eu@SiNPs) was fabricated for the first time by one-pot method without post-modification for determination of the DPA in bacillus subtilis spores (simulant bacillus anthrax spores). Based on Eu(III) in the Eu@SiNPs could be sensitized by DPA to emit intrinsic fluorescence and the fluorescence intensity of SiNPs in the Eu@SiNPs almost remained stable, a new ratiometric fluorescent method for determination of micro DPA in bacillus subtilis spores and bacillus subtilis spores in real environmental samples, such as Yellow river water, tap water and soil was established. Under the optimum conditions, the limit of detection (LOD) of the method toward bacillus subtilis spores was as low as 2.38×104 spore/mL. Simple, fast and visual DPA and bacillus subtilis spores determination was also achieved by the Eu@SiNPs-based test paper. Therefore, the newly established method was expected to be a powerful tool for efficiently determination of bacillus anthrax spores to avoid anthrax threats.
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Affiliation(s)
- Min Na
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Siping Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou 730000, China
| | - Juanjuan Liu
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Sudai Ma
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Yangxia Han
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Yong Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou 730000, China
| | - Yongxing He
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou 730000, China
| | - Hongli Chen
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Xingguo Chen
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou 730000, China.
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Na M, Chen Y, Han Y, Ma S, Liu J, Chen X. Determination of potassium ferrocyanide in table salt and salted food using a water-soluble fluorescent silicon quantum dots. Food Chem 2019; 288:248-255. [DOI: 10.1016/j.foodchem.2019.02.111] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 01/17/2019] [Accepted: 02/23/2019] [Indexed: 12/29/2022]
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5
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Hou C, Wang M, Guo L, Jia Q, Ge J. Carbon Dot Assemblies for Enhanced Cellular Uptake and Photothermal Therapy In Vitro. ChemistrySelect 2017. [DOI: 10.1002/slct.201702473] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Changshun Hou
- Technical Institute of Physics and Chemistry; Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District Beijing 100190 China
- School of Future Technology; University of Chinese Academy of Sciences; No.19(A) Yuquan Road, Shijingshan District Beijing 100049 China
| | - Mengqi Wang
- Technical Institute of Physics and Chemistry; Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District Beijing 100190 China
| | - Liang Guo
- Technical Institute of Physics and Chemistry; Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District Beijing 100190 China
- School of Future Technology; University of Chinese Academy of Sciences; No.19(A) Yuquan Road, Shijingshan District Beijing 100049 China
| | - Qingyan Jia
- Technical Institute of Physics and Chemistry; Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District Beijing 100190 China
- School of Future Technology; University of Chinese Academy of Sciences; No.19(A) Yuquan Road, Shijingshan District Beijing 100049 China
| | - Jiechao Ge
- Technical Institute of Physics and Chemistry; Chinese Academy of Sciences; 29 Zhongguancun East Road, Haidian District Beijing 100190 China
- School of Future Technology; University of Chinese Academy of Sciences; No.19(A) Yuquan Road, Shijingshan District Beijing 100049 China
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6
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Ma SD, Chen YL, Feng J, Liu JJ, Zuo XW, Chen XG. One-Step Synthesis of Water-Dispersible and Biocompatible Silicon Nanoparticles for Selective Heparin Sensing and Cell Imaging. Anal Chem 2016; 88:10474-10481. [DOI: 10.1021/acs.analchem.6b02448] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Su-dai Ma
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, China
- Department
of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Yong-lei Chen
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, China
- Department
of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Jie Feng
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, China
- Department
of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Juan-juan Liu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, China
- Department
of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Xian-wei Zuo
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, China
- Department
of Chemistry, Lanzhou University, Lanzhou, 730000, China
| | - Xing-guo Chen
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, China
- Department
of Chemistry, Lanzhou University, Lanzhou, 730000, China
- Key
Laboratory of Nonferrous Metal Chemistry and Resources Utilization
of Gansu Province, Lanzhou University, Lanzhou, 730000, China
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Yu J, Gao J, Xue F, Yu X, Yu H, Dong X, Huang H, Ding A, Quan X, Cao G. Formation mechanism and optical characterization of polymorphic silicon nanostructures by DC arc-discharge. RSC Adv 2015. [DOI: 10.1039/c5ra11738k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Polymorphic Si nanostructures (particle, sheet, ribbon) are generated through isotropic, anisotropic, and coalescence growth using a DC arc-discharge plasma method.
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