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Zeng C, Xu C, Tian H, Shao K, Song Y, Yang X, Che Z, Huang Y. Determination of aflatoxin B1 in Pixian Douban based on aptamer magnetic solid-phase extraction. RSC Adv 2022; 12:19528-19536. [PMID: 35865604 PMCID: PMC9258682 DOI: 10.1039/d2ra02763a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 06/30/2022] [Indexed: 11/21/2022] Open
Abstract
Aflatoxin B1 (AFB1) is considered as the most prevalent and toxic mycotoxin in food, and is the indispensable index in the monitoring of Pixian Douban, a traditional chinese fermented bean paste from Sichuan. However, the effeciency of AFB1 detection in Pixian Douban is influenced by the traditional extraction, which is usually complex and time consuming. Therefore, an aptamer-based magnetic solid-phase extraction method was designed for the pretreatment of AFB1 in this sample, for which Fe3O4 was synthesized via the solvothermal method and then a Fe3O4@SiO2–NH2 with a core–shell structure was prepared, followed by an AFB1-aptamer attachment. The validation was performed via an enzyme-linked immunosorbent assay and compared with HPLC-MS/MS. The linearity range of this method was 0.5–2.0 ng mL −1 with R2 of 0.981, and recoveries of AFB1 ranged from 80.19% to 113.92% with RSDs below 7.28% with no significant differences compared to HPLC-MS/MS. The three-time reusability efficiencies of aptamer-MNPs were averaged at 78.24%. The results proved that aptamer-MNPs were high-performance adsorbents for extracting and enriching AFB1, facilitating quick and effective detection of AFB1 in Pixian DouBan samples. An aptamer-based magnetic solid-phase extraction method was designed for the pretreatment of AFB1 from a Pixian Douban sample. It was developed based on aptamer–Fe3O4@SiO2–NH2 with subsequent ELISA validation, showing an efficient result.![]()
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Affiliation(s)
- Chaoyi Zeng
- School of Food and Biological Engineering, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University Chengdu 610039 China .,Department of Food Biotechnology, Faculty of Biotechnology, Assumption University Bangkok 10240 Thailand
| | - Chi Xu
- School of Food and Biological Engineering, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University Chengdu 610039 China
| | - Hongyun Tian
- Shandong Institute of Food and Drug Control Jinan 250101 China
| | - Kun Shao
- School of Food and Biological Engineering, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University Chengdu 610039 China
| | - Yaning Song
- School of Food and Biological Engineering, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University Chengdu 610039 China
| | - Xiao Yang
- School of Food and Biological Engineering, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University Chengdu 610039 China
| | - Zhenming Che
- School of Food and Biological Engineering, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University Chengdu 610039 China .,Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute Yibin 644004 China
| | - Yukun Huang
- School of Food and Biological Engineering, Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Xihua University Chengdu 610039 China .,Key Laboratory of Food Non Thermal Processing, Engineering Technology Research Center of Food Non Thermal Processing, Yibin Xihua University Research Institute Yibin 644004 China
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Xu Y, Deng C, Xiao Z, Chen C, Luo X, Zhou Y, Jiang Q. A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core-Shell Magnetic Nanospheres. MATERIALS 2020; 13:ma13173678. [PMID: 32825384 PMCID: PMC7504229 DOI: 10.3390/ma13173678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/31/2020] [Accepted: 08/05/2020] [Indexed: 11/16/2022]
Abstract
Fe3O4@SiO2 nanospheres with a core-shell structure were synthesized and functionalized with bis(2-pyridylmethyl)amine (BPMA). The photoresponses of the as-obtained Fe3O4@SiO2-BPMA for Cr3+, Cd2+, Hg2+ and Pb2+ ions were evaluated through irradiation with a 352 nm ultraviolet lamp, and Fe3O4@SiO2-BPMA exhibited remarkable fluorescence enhancement toward the Cd2+ ion. The adsorption experiments revealed that Fe3O4@SiO2-BPMA had rapid and effective adsorption toward the Cd2+ ion. The adsorption reaction was mostly complete within 30 min, the adsorption efficiency reached 99.3%, and the saturated adsorption amount was 342.5 mg/g based on Langmuir linear fitting. Moreover, Fe3O4@SiO2-BPMA displayed superparamagnetic properties with the saturated magnetization of 20.1 emu/g, and its strong magnetic sensitivity made separation simple and feasible. Our efforts in this work provide a potential magnetic functionalized nanosensor for naked-eye identification and adsorption toward the Cd2+ ion.
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Affiliation(s)
- Yaohui Xu
- Laboratory for Functional Materials, School of Electronics and Materials Engineering, Leshan Normal University, Leshan 614000, China; (Y.X.); (C.D.); (Z.X.); (C.C.); (X.L.)
| | - Chi Deng
- Laboratory for Functional Materials, School of Electronics and Materials Engineering, Leshan Normal University, Leshan 614000, China; (Y.X.); (C.D.); (Z.X.); (C.C.); (X.L.)
| | - Zhigang Xiao
- Laboratory for Functional Materials, School of Electronics and Materials Engineering, Leshan Normal University, Leshan 614000, China; (Y.X.); (C.D.); (Z.X.); (C.C.); (X.L.)
| | - Chang Chen
- Laboratory for Functional Materials, School of Electronics and Materials Engineering, Leshan Normal University, Leshan 614000, China; (Y.X.); (C.D.); (Z.X.); (C.C.); (X.L.)
| | - Xufeng Luo
- Laboratory for Functional Materials, School of Electronics and Materials Engineering, Leshan Normal University, Leshan 614000, China; (Y.X.); (C.D.); (Z.X.); (C.C.); (X.L.)
| | - Yang Zhou
- School of Textile Science and Engineering, National Engineering Laboratory for Advanced Yarn and Clean Production, Wuhan Textile University, Wuhan 430200, China
- Correspondence: (Y.Z.); (Q.J.); Tel.: +86-0833-2276270 (Q.J.)
| | - Qiang Jiang
- Laboratory for Functional Materials, School of Electronics and Materials Engineering, Leshan Normal University, Leshan 614000, China; (Y.X.); (C.D.); (Z.X.); (C.C.); (X.L.)
- Correspondence: (Y.Z.); (Q.J.); Tel.: +86-0833-2276270 (Q.J.)
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Liu Z, Qi P, Wang J, Wang Z, Di S, Xu H, Zhao H, Wang Q, Wang X, Wang X. Development, validation, comparison, and implementation of a highly efficient and effective method using magnetic solid-phase extraction with hydrophilic-lipophilic-balanced materials for LC-MS/MS analysis of pesticides in seawater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:135221. [PMID: 31806340 DOI: 10.1016/j.scitotenv.2019.135221] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/23/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
To achieve multi-pesticides residue analysis in seawater, hydrophilic-lipophilic-balanced magnetic particles were designed and fabricated by swelling polymerization of divinyl benzene (DVB) and N-vinyl pyrrolidone (NVP) on the surface of Fe3O4@SiO2 magnetic particles. The ratio of DVB to NVP was adjusted to achieve a proper balance in hydrophilicity and lipophilicity. The obtained magnetic particles were systematically characterized by TEM, SEM, FT-IR and vibrating sample magnetization. Based on the optimized magnetic nanoparticles, a sensitive magnetic solid-phase extraction method was developed for the simultaneous pre-concentration and determination of 96-pesticide residues from large-volume seawater samples prior to being detected by liquid chromatography-tandem mass spectrometry. Recoveries of pesticides in spiked seawater samples (0.001, 0.01, 0.1, 1.0 μg L-1) ranged from 62% to 112% with RSDs less than 21%. The method limits of detection of 96 pesticides ranged from 0.13 to 0.42 ng L-1, the method limits of quantification of 96 pesticides ranged from 1.0 to 10 ng L-1. The method was successfully applied to pesticide residue analysis in water samples from Jiulong River Estuary of China, demonstrating the prospects of this technique as a potential method for the rapid determination of trace levels of multi-pesticide residues in seawater.
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Affiliation(s)
- Zhenzhen Liu
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen 361005, PR China
| | - Peipei Qi
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; State Key Laboratory for Quality and Safety of Agro-products, Hangzhou 310021, PR China; Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Hangzhou 310021, PR China
| | - Jiao Wang
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Hangzhou 310021, PR China
| | - Zhiwei Wang
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Shanshan Di
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Hao Xu
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Huiyu Zhao
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Qiang Wang
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; State Key Laboratory for Quality and Safety of Agro-products, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China
| | - Xinquan Wang
- Institute of Quality and Standard of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; State Key Laboratory for Quality and Safety of Agro-products, Hangzhou 310021, PR China; Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Hangzhou 310021, PR China.
| | - Xinhong Wang
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen 361005, PR China.
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