Development of a quantum dot-labelled biomimetic fluorescence immunoassay for the simultaneous determination of three organophosphorus pesticide residues in agricultural products
In this study, we used 2-(diethexyphosphoryl)acetic acid as a common template molecule and Fe3O4@SiO2 as support material to prepare a superparamagnetic core/shell molecular imprinting polymer (MIP), Fe3O4@SiO2@MIP, which has multiple recognition sites and increased adsorption capacity. Then, a biom...
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doaj-9fc2565075eb49f780fca2d4fbff8a482020-11-25T01:58:23ZengTaylor & Francis GroupFood and Agricultural Immunology0954-01051465-34432019-01-0130124826110.1080/09540105.2019.15727141572714Development of a quantum dot-labelled biomimetic fluorescence immunoassay for the simultaneous determination of three organophosphorus pesticide residues in agricultural productsMingdi Jiang0Jingbo He1Junjie Gong2Huiju Gao3Zhixiang Xu4College of Food Science and Engineering, Shandong Agricultural UniversityCollege of Food Science and Engineering, Shandong Agricultural UniversityLongDa Foodstuff Group Co., Ltd.College of Forestry, Shandong Agricultural UniversityCollege of Food Science and Engineering, Shandong Agricultural UniversityIn this study, we used 2-(diethexyphosphoryl)acetic acid as a common template molecule and Fe3O4@SiO2 as support material to prepare a superparamagnetic core/shell molecular imprinting polymer (MIP), Fe3O4@SiO2@MIP, which has multiple recognition sites and increased adsorption capacity. Then, a biomimetic fluorescence immunoassay method was developed for the simultaneous determination of methyl parathion, chlorpyrifos, and trichlorfon using the Fe3O4@SiO2@MIP as biomimetic antibody and quantum dots as label. The factors that influenced the performance of this method were optimized. Under optimal conditions the limits of detection of the method were 0.21 ± 0.021, 0.44 ± 0.069 and 0.32 ± 0.033 μg/L for methyl parathion, chlorpyrifos, and trichlorfon, respectively. To evaluate the accuracy of the method, apple and orange samples spiked with methyl parathion, chlorpyrifos, and trichlorfon were analysed, and the recoveries ranged from 73.1% to 119.3%. Finally, this method was applied to detect three pesticides in pear, carrot, kiwifruit, and banana samples, and the results indicated a good correlation with those obtained from gas chromatography method.http://dx.doi.org/10.1080/09540105.2019.1572714organophosphorus pesticide residuesmolecularly imprinted polymermultiple recognition sitesquantum dotsbiomimetic fluorescence immunoassay |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mingdi Jiang Jingbo He Junjie Gong Huiju Gao Zhixiang Xu |
spellingShingle |
Mingdi Jiang Jingbo He Junjie Gong Huiju Gao Zhixiang Xu Development of a quantum dot-labelled biomimetic fluorescence immunoassay for the simultaneous determination of three organophosphorus pesticide residues in agricultural products Food and Agricultural Immunology organophosphorus pesticide residues molecularly imprinted polymer multiple recognition sites quantum dots biomimetic fluorescence immunoassay |
author_facet |
Mingdi Jiang Jingbo He Junjie Gong Huiju Gao Zhixiang Xu |
author_sort |
Mingdi Jiang |
title |
Development of a quantum dot-labelled biomimetic fluorescence immunoassay for the simultaneous determination of three organophosphorus pesticide residues in agricultural products |
title_short |
Development of a quantum dot-labelled biomimetic fluorescence immunoassay for the simultaneous determination of three organophosphorus pesticide residues in agricultural products |
title_full |
Development of a quantum dot-labelled biomimetic fluorescence immunoassay for the simultaneous determination of three organophosphorus pesticide residues in agricultural products |
title_fullStr |
Development of a quantum dot-labelled biomimetic fluorescence immunoassay for the simultaneous determination of three organophosphorus pesticide residues in agricultural products |
title_full_unstemmed |
Development of a quantum dot-labelled biomimetic fluorescence immunoassay for the simultaneous determination of three organophosphorus pesticide residues in agricultural products |
title_sort |
development of a quantum dot-labelled biomimetic fluorescence immunoassay for the simultaneous determination of three organophosphorus pesticide residues in agricultural products |
publisher |
Taylor & Francis Group |
series |
Food and Agricultural Immunology |
issn |
0954-0105 1465-3443 |
publishDate |
2019-01-01 |
description |
In this study, we used 2-(diethexyphosphoryl)acetic acid as a common template molecule and Fe3O4@SiO2 as support material to prepare a superparamagnetic core/shell molecular imprinting polymer (MIP), Fe3O4@SiO2@MIP, which has multiple recognition sites and increased adsorption capacity. Then, a biomimetic fluorescence immunoassay method was developed for the simultaneous determination of methyl parathion, chlorpyrifos, and trichlorfon using the Fe3O4@SiO2@MIP as biomimetic antibody and quantum dots as label. The factors that influenced the performance of this method were optimized. Under optimal conditions the limits of detection of the method were 0.21 ± 0.021, 0.44 ± 0.069 and 0.32 ± 0.033 μg/L for methyl parathion, chlorpyrifos, and trichlorfon, respectively. To evaluate the accuracy of the method, apple and orange samples spiked with methyl parathion, chlorpyrifos, and trichlorfon were analysed, and the recoveries ranged from 73.1% to 119.3%. Finally, this method was applied to detect three pesticides in pear, carrot, kiwifruit, and banana samples, and the results indicated a good correlation with those obtained from gas chromatography method. |
topic |
organophosphorus pesticide residues molecularly imprinted polymer multiple recognition sites quantum dots biomimetic fluorescence immunoassay |
url |
http://dx.doi.org/10.1080/09540105.2019.1572714 |
work_keys_str_mv |
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1724970013393158144 |