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Yang W, Tan Z, Yu S, Ren Y, Pan R, Yu X. A highly sensitive optical fiber sensor enables rapid triglycerides-specific detection and measurement at different temperatures using convolutional neural networks. Int J Biol Macromol 2024; 256:128353. [PMID: 38000611 DOI: 10.1016/j.ijbiomac.2023.128353] [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: 09/29/2023] [Revised: 11/15/2023] [Accepted: 11/20/2023] [Indexed: 11/26/2023]
Abstract
For specific recognition and sensitive detection of triglycerides (TGs), an optical fiber sensor (OFS) based on an enhanced core diameter mismatch was proposed. The sensitivity of the sensor is significantly increased due to the repetitive excitation of the higher-order cladding modes. A technique for immobilizing lipase using covalent binding technology was presented and demonstrated by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy. The interference dip of the sensor was shifted due to TGs being hydrolyzed in the presence of lipase. The sensor shows an optimal response within 3 min and exhibits a high sensitivity of 0.9933 nm/(mg/ml) and a limit of detection of 0.0822 mg/ml in the concentration range 0-8 mg/ml at a temperature of 37 °C and a pH of 7.4. The response of the sensor to TGs concentration at different temperatures and pH was investigated. The reproducibility, reusability, and stability of the proposed sensor were tested and verified experimentally. The biosensor is highly specific for TGs and unaffected by many other interfering substances. Further, the measurement of TGs concentration at different temperatures was realized. This method provides a new way to detect TGs rapidly and reliably and has potential applications in medical research and clinical diagnosis.
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Affiliation(s)
- Wenlong Yang
- Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application, Harbin University of Science and Technology, Harbin 150080, China; School of measurement and communication engineering, Harbin University of Science and Technology, Harbin 150080, China.
| | - Zhengzheng Tan
- Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application, Harbin University of Science and Technology, Harbin 150080, China; School of measurement and communication engineering, Harbin University of Science and Technology, Harbin 150080, China.
| | - Shuang Yu
- Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application, Harbin University of Science and Technology, Harbin 150080, China; School of measurement and communication engineering, Harbin University of Science and Technology, Harbin 150080, China.
| | - Yuanyuan Ren
- Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application, Harbin University of Science and Technology, Harbin 150080, China; School of measurement and communication engineering, Harbin University of Science and Technology, Harbin 150080, China.
| | - Rui Pan
- Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application, Harbin University of Science and Technology, Harbin 150080, China; School of measurement and communication engineering, Harbin University of Science and Technology, Harbin 150080, China.
| | - Xiaoyang Yu
- Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application, Harbin University of Science and Technology, Harbin 150080, China; School of measurement and communication engineering, Harbin University of Science and Technology, Harbin 150080, China.
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Hao YX, Yang ML, Chen XF, Zhang F, Li N, He MY, Xu MX. Development of Magnetic Molecularly Imprinted Polymer Coupled Nanospray Ion Source for Analysis of Cephalosporin Antibiotics in Food Samples. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37246392 DOI: 10.1021/acs.jafc.3c01527] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A magnetic molecularly imprinted polymer (MMIP) coupled nanospray ion source was developed for analysis of cephalosporin antibiotics in food samples. MIP coated Fe3O4 nanospheres were prepared for magnetic solid-phase extraction (MSPE) of the antibiotics in the extract of samples and then integrated into the nanospray capillary for further desorption and mass spectrometry analysis. The developed device combines the advantages of high extraction efficiency of MSPE, unique selectivity of MIPs, and fast analysis speed of ambient ionization mass spectrometry (AIMS). Five cephalosporin antibiotics in milk, egg, and beef samples were analyzed using the developed methods. High sensitivities with limits of detection (LODs) from 0.3 to 0.5 μg kg-1 were achieved for cephalosporin antibiotics in milk, egg, and beef samples, respectively. Good linearity, determination coefficient values (R2 > 0.992), and precision (RSD < 15%) with recoveries ranging from 72.6% to 115.5% were obtained using the spiked milk, egg, and beef sample matrices.
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Affiliation(s)
- Ya-Xin Hao
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
- Qilu University of Technology (Shandong Academy of Science), Shandong Analysis and Test Centre, Jinan, Shandong 250014, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Min-Li Yang
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Xiang-Feng Chen
- Qilu University of Technology (Shandong Academy of Science), Shandong Analysis and Test Centre, Jinan, Shandong 250014, China
| | - Feng Zhang
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Na Li
- Qilu University of Technology (Shandong Academy of Science), Shandong Analysis and Test Centre, Jinan, Shandong 250014, China
| | - Mu-Yi He
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
| | - Mei-Xia Xu
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
- Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China
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Wang Y, Cao X, Shi J, Li X, Liu Y, Xu YJ. Tracking the dynamics of epoxy triglycerides during thermal oxidation by liquid chromatography-mass spectrometry. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chen D, Wang B, Xu XL, Zhang MY, Bu XM, Yang S, Luo Y, Xu X. Kapok fiber-supported liquid extraction for convenient oil samples preparations: A feasibility and proof-of-concept study. J Chromatogr A 2022; 1681:463480. [PMID: 36095972 DOI: 10.1016/j.chroma.2022.463480] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/26/2022] [Accepted: 09/04/2022] [Indexed: 11/29/2022]
Abstract
In this study, a novel kapok fiber-supported liquid extraction (KF-SLE) method was developed for conveniently extracting analytes from oil samples. Natural kapok fiber without any pretreatment was directly used as an oil support medium. The extraction device was conveniently constructed by directly packing some kapok fibers into a syringe tube. Due to the fibrous property of the kapok fiber, no filter plate was needed. The cost of a KF-SLE device was as low as 0.5 CNY. The KF-SLE process was conveniently conducted using a simple three-step protocol: (1) the oil sample without any pretreatment including dilution was added directedly; (2) then, the oil-immiscible extractant was added; (3) after waiting a certain time for static extraction, the extractant was eluted out by pressing the kapok fibers with the syringe plunger. The extractant could be directly transferred for subsequent instrumental detection. For the feasibility and proof-of-concept study, the method was applied to quantify four synthetic flavor chemicals in edible oils. Satisfied quantification results were obtained with the correlation coefficient (R2) being greater than 0.996, the relative recoveries ranging from 92.90% to 107.53% and intra- and inter-day RSDs being less than 7.56%. All in all, for the first time, the SLE technique was expanded to process oil samples and the method has the characteristics of low cost, environmental friendliness, high sample processing throughput and ease of automation, offering a promising approach for edible oil sample preparations.
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Affiliation(s)
- Di Chen
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases of Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Bin Wang
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases of Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Xin-Li Xu
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases of Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Man-Yu Zhang
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases of Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Xin-Miao Bu
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases of Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Sen Yang
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases of Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Yanbo Luo
- China National Tobacco Quality Supervision and Test Center, Zhengzhou, Henan, China.
| | - Xia Xu
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases of Henan Province, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China.
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Zhu A, Kan X. Three-dimensional ordered macroporous imprinted polymer for bisphenol A recognition. ANAL SCI 2022; 38:969-975. [PMID: 35610465 DOI: 10.1007/s44211-022-00120-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2022] [Indexed: 11/27/2022]
Abstract
A novel kind of three-dimensional ordered macroporous molecular imprinted polymer (3DOM MIP) was prepared and studied. Monodisperse silica microspheres were used to form silica crystal template via simple centrifuge. In the presence of template molecule, acrylamide and trimethylolpropane trimethacrylate were co-polymerized in the interstices of crystal template bisphenol A (BPA). Hydrofluoric acid were employed to etch silica crystal and the mixed solvent of methanol with acetic acid were employed to extract template molecule. The results of SEM and FTIR confirmed the successful synthesis of 3DOM MIP. The obtained 3DOM MIP exhibited a rapid adsorption kinetics and a specific adsorption capacities toward template molecule because of the small size of MIP wall, which possessed much more effective imprinted cavies. Meanwhile, 3DOM MIP could selective recognized BPA from its structural analogues.
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Affiliation(s)
- Anhong Zhu
- Department of Pharmacy, Nanjing University of Chinese Medicine Hanlin College, Taizhou, 225300, People's Republic of China. .,College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People's Republic of China. .,The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, Anhui Key Laboratory of Functional Molecular Solids, Wuhu, People's Republic of China.
| | - Xianwen Kan
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People's Republic of China. .,The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, Anhui Key Laboratory of Chemo-Biosensing, Anhui Key Laboratory of Functional Molecular Solids, Wuhu, People's Republic of China.
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