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Rashidi L, Faraji Sarabmirza R, Joolaei Ahranjani P, Hadi Jume B, Gholami Z, Rashid Nodeh H. Dispersive clean-up process based on a magnetic graphene oxide nanocomposite for determination of 2-glycerol monopalmitate in olive oil prior to GC-FID and GC-MS analysis. J Sci Food Agric 2022; 102:995-1001. [PMID: 34302362 DOI: 10.1002/jsfa.11433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 04/13/2021] [Accepted: 07/24/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Recently, methods have been developed for the better quality control, fraud detection and analytical investigation of olive oil. Magnetic graphene oxide (GO) material is known for its reusability, high adsorption capability and stability in food sample preparation. Monopalmitine or 2-glycerol monopalmitate (2-GMP) is one of the main parameters in the quality assay and classification of olive oil, which can be classified as extra virgin ≤ 0.9% and olive pomace ≤ 1.2. Hence, newly synthesized magnetic GO (MGO) and commercial silica-gel were used as a dispersive solid-phase clean-up (d-SPE) sorbent to determine 2-GMP value in olive oil samples prior to gas chromatography (GC) analysis. The d-SPE method is validated with olive oil certified reference material (CRM) with respect to silica-gel and a MGO nanocomposite. RESULTS The developed d-SPE method was applied for various virgin, refined and pomace olive oil samples to determine the value of 2-GMP%. The presence of 2-GMP in the samples was confirmed by GC-mass spectrometry analysis based on silylation derivatives of the analyte. Finally, the d-SPE-MGO method was determined 2-GMP% as 1.9% for pomace olive oil, 0.6% for refined olive oil, 0.4% for virgin olive oil and 3.1% for CRM. The MGO provided satisfactory clean-up recovery (124%) in the acceptable data range for CRM2018, and silica-gel also provided satisfactory recovery (83%) for CRM2018. The proposed method performed with higher sensitivity and efficiency for screening 2-GMP% in olive oil. CONCLUSION The MGO based d-SPE method was applied for clean-up purposes to determine 2-GMP%. It proved superior via its advantageous features of super quickness, easy isolation with an external magnet and the highly efficient exclusion of all the coexisting interfering peaks conventionally generated with a standard silica-gel material. These methods based on MGO and silica-gel are reflected in the dispersive mode of extraction and can be used as alternatives to conventional methods. Considering the benefits of the consumption of significantly fewer sorbents and less time required regarding the dispersive methods, the methods can be utilized as alternatives in contrast to conventional techniques. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Ladan Rashidi
- Food Technology and Agricultural Products Research Center, Standard Research Institute (SRI), Karaj, Iran
| | | | - Parham Joolaei Ahranjani
- Department of Microbial and Molecular Systems, Faculty of Bioscience Engineering, KU Leuven, Kasteelpark Arenberg 20, 3001 Leuven, Leuven, Belgium
| | - Binta Hadi Jume
- Chemistry Department, College of Science and General Studies, University of Hafr Al-Batin, Hafar Al Batin, Saudi Arabia
| | - Zahra Gholami
- Department of Chemical Engineering, Mid Sweden University, SE-85170 Sundsvall, Sundsvall, Sweden
| | - Hamid Rashid Nodeh
- Food Technology and Agricultural Products Research Center, Standard Research Institute (SRI), Karaj, Iran
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Xu G, Hou L, Liu C, Wang X, Liu L, Li N, Lin JM, Zhao RS. Fabrication of a Magnetic Fluorinated Covalent Organic Framework for the Selective Capture of Benzoylurea Insecticide Residue in Beverages. ACS Appl Mater Interfaces 2021; 13:51535-51545. [PMID: 34672528 DOI: 10.1021/acsami.1c15869] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Efficient capture of benzoylurea insecticide (BU) residue in food is a vital procedure for food safe monitoring. Herein, a core-shell structured magnetic fluorinated covalent organic framework with good magnetic responsiveness and abundant fluorine affinity sites was successfully synthesized, suitable for magnetic solid-phase extraction (MSPE) of BUs. Using a room-temperature synthesis strategy, the magnetic fluorinated covalent organic framework was fabricated by in situ polymerization of 1,3,5-tris(4-aminophenyl) triazine (TAPT) and 2,3,5,6-tetrafluoroterephthaldehyde (TFTA) on the surface of carboxylated Fe3O4 nanoparticles. The competitive adsorption experiment and molecular simulation verified that this magnetic fluorinated covalent organic framework possesses favorable adsorption affinity for BUs. This magnetic fluorinated covalent organic framework could be easily regenerated and reused at least eight times with no reduction of enrichment performance. Combining this magnetic fluorinated covalent organic framework-based MSPE with high-performance liquid chromatography-tandem mass spectrometry, a novel sensitive method for the analysis of BUs was developed. In yellow wine and fruit juice samples, good linear correlations were obtained for BUs in the range of 10-2000 and 20-4000 ng·L-1, respectively. The limit of quantitation of the BUs ranged from 1.4 to 13.3 ng·L-1 in the two beverage matrices. Desirable precision was achieved, with intraday and interday relative standard deviations lower than 11%.
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Affiliation(s)
- Guiju Xu
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
| | - Longfei Hou
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Chuqing Liu
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
| | - Xiaoli Wang
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
| | - Lu Liu
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Na Li
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
| | - Jin-Ming Lin
- Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Ru-Song Zhao
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
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Targuma S, Njobeh PB, Ndungu PG. Current Applications of Magnetic Nanomaterials for Extraction of Mycotoxins, Pesticides, and Pharmaceuticals in Food Commodities. Molecules 2021; 26:4284. [PMID: 34299560 PMCID: PMC8303358 DOI: 10.3390/molecules26144284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 12/25/2022] Open
Abstract
Environmental pollutants, such as mycotoxins, pesticides, and pharmaceuticals, are a group of contaminates that occur naturally, while others are produced from anthropogenic sources. With increased research on the adverse ecological and human health effects of these pollutants, there is an increasing need to regularly monitor their levels in food and the environment in order to ensure food safety and public health. The application of magnetic nanomaterials in the analyses of these pollutants could be promising and offers numerous advantages relative to conventional techniques. Due to their ability for the selective adsorption, and ease of separation as a result of magnetic susceptibility, surface modification, stability, cost-effectiveness, availability, and biodegradability, these unique magnetic nanomaterials exhibit great achievement in the improvement of the extraction of different analytes in food. On the other hand, conventional methods involve longer extraction procedures and utilize large quantities of environmentally unfriendly organic solvents. This review centers its attention on current applications of magnetic nanomaterials and their modifications in the extraction of pollutants in food commodities.
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Affiliation(s)
- Sarem Targuma
- Energy, Sensors and Multifunctional Nanomaterials Research Group, Department of Chemical Sciences, Doornfontein Campus, University of Johannesburg, Johannesburg 2028, South Africa;
| | - Patrick B. Njobeh
- Department of Biotechnology and Food Technology, Doornfontein Campus, University of Johannesburg, Johannesburg 2028, South Africa;
| | - Patrick G. Ndungu
- Energy, Sensors and Multifunctional Nanomaterials Research Group, Department of Chemical Sciences, Doornfontein Campus, University of Johannesburg, Johannesburg 2028, South Africa;
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Li X, Ma W, Zhang Q, Li H, Liu H. Determination of patulin in apple juice by amine-functionalized solid-phase extraction coupled with isotope dilution liquid chromatography tandem mass spectrometry. J Sci Food Agric 2021; 101:1767-1771. [PMID: 32888337 DOI: 10.1002/jsfa.10790] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 08/31/2020] [Accepted: 09/05/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Patulin is a mycotoxin that mainly contaminates apple juice, which is a typical high sugar matrix. Many different adsorbents have been utilized to develop a sample pretreatment method to minimize the matrix interference from apple juice. RESULTS A simple and reliable extraction method for the determination of patulin in apple juice has been developed. The sample preparation involves a simple one-step cleanup procedure using amine-functionalized polymeric solid-phase extraction cartridges (Retain AX) that effectively remove interferences and facilitate the quantification. Isotope dilution liquid chromatography tandem mass spectrometry (ID-LC-MS/MS) was employed to minimize the matrix effect and ensure reliable results. The limit of detection was as low as 0.2 μg kg-1 , which was satisfactory with regard to current European, US, and Chinese legislation. Matrix-matched linearity (r2 = 0.9997) was established in the range of 1-400 μg kg-1 . Recovery was performed in samples spiked at three levels, and results were between 97.2% and 100.2%. CONCLUSION The results indicated that, with one-step cleanup, the matrix effect was negligible and sensitivity was satisfactory. Our work provided a simple and reliable method for patulin detection in apple juice and is also very promising in routine quality control. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Xianjiang Li
- Food Safety Laboratory, Division of Metrology in Chemistry, National Institute of Metrology, Beijing, China
| | - Wen Ma
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Qinghe Zhang
- Food Safety Laboratory, Division of Metrology in Chemistry, National Institute of Metrology, Beijing, China
| | - Hongmei Li
- Food Safety Laboratory, Division of Metrology in Chemistry, National Institute of Metrology, Beijing, China
| | - Huwei Liu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
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Liu J, Wu D, Yu Y, Liu J, Li G, Wu Y. Highly sensitive determination of endocrine disrupting chemicals in foodstuffs through magnetic solid-phase extraction followed by high-performance liquid chromatography-tandem mass spectrometry. J Sci Food Agric 2021; 101:1666-1675. [PMID: 32888325 DOI: 10.1002/jsfa.10787] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 08/15/2020] [Accepted: 09/05/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Endocrine disrupting chemicals (EDCs), proved to be potential carcinogenic threats to human health, have received great concerns in food field. It was essential to develop effective methods to detect EDCs in food samples. The present study proposed an efficient method to determine trace EDCs including estrone (E1), 17β-estradiol (E2), estriol (E3) and bisphenol A (BPA) based on magnetic solid-phase extraction (MSPE) coupled high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) in meat samples. RESULTS Fe3 O4 @COF(TpBD)/TiO2 nanocomposites were synthesized via functionalization of magnetic covalent organic frameworks (COFs) with titanium dioxide (TiO2 ) nanoparticles, and used as absorbents of MSPE to enrich EDCs. The efficient EDCs enrichment relies on π-π stacking interaction, hydrogen bonding, and the interaction between titanium ions (IV, Ti4+ ) and hydroxyl groups in EDCs, which improves the selectivity and sensitivity. Under the optimized conditions, target EDCs were rapidly extracted through MSPE with 5 min. Combining Fe3 O4 @COF(TpBD)/TiO2 based MSPE and HPLC-MS/MS to determine EDCs, good linearities were observed with correlation coefficient (R2 ) ≥ 0.9989. The limits of detection (LODs) and limits of quantification (LOQs) were 0.13-0.41 μg kg-1 and 0.66-1.49 μg kg-1 , respectively. Moreover, the proposed method was successfully applied to real samples analysis. CONCLUSIONS The established MSPE-HPLC-MS/MS method was successfully applied to determine EDCs in meat samples with rapidness, improved selectivity and sensitivity. It shows great prospects for EDCs detection in other complicated matrices. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Jianghua Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
| | - Di Wu
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, UK
| | - Yanxin Yu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
| | - Jichao Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
| | - Guoliang Li
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
| | - Yongning Wu
- NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing, China
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Saad EM, El Gohary NA, Abdel-Halim M, Handoussa H, Mohamed El Nashar R, Mizaikoff B. Molecularly imprinted polymers for selective extraction of rosmarinic acid from Rosmarinus officinalis L. Food Chem 2021; 335:127644. [PMID: 32739815 DOI: 10.1016/j.foodchem.2020.127644] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 06/27/2020] [Accepted: 07/19/2020] [Indexed: 01/05/2023]
Abstract
This study provides a robust and reproducible approach for selective extraction of rosmarinic acid (RA) using molecularly imprinted polymers (MIPs). Computational modeling and UV spectroscopic analysis were performed to optimize MIP synthesis. Consequently, six different bulk and surface imprinted polymers were generated using RA as the template. Binding performance of the imprinted polymers was evaluated using static equilibrium and complementary dynamic rebinding experiments. Despite the high selectivity of thus generated surface imprinted polymers, the corresponding bulk polymers exhibited better binding performance when serving as sorbents during solid phase extraction (SPE). An optimized molecularly imprinted solid phase extraction (MISPE) protocol was developed in respect to loaded amount of RA, composition of the loading solution, washing solvent, and elution volume. Thereby, a remarkably selective extraction of RA from real-world Rosmarinus officinalis L. extract with a recovery rate and purity of 81.96 ± 6.33% and 80.59 ± 0.30%, respectively, was achieved.
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Affiliation(s)
- Engy M Saad
- Pharmaceutical Chemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, 11835 Cairo, Egypt
| | - Nesrine Abdelrehim El Gohary
- Pharmaceutical Chemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, 11835 Cairo, Egypt.
| | - Mohammad Abdel-Halim
- Pharmaceutical Chemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, 11835 Cairo, Egypt
| | - Heba Handoussa
- Pharmaceutical Biology Department, Faculty of Pharmacy and Biotechnology, German University in Cairo, 11835 Cairo, Egypt
| | | | - Boris Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry, Ulm University, 89081 Ulm, Germany
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He J, Lu Y, Zhao T, Li Y. Preparation of polydopamine-coated, graphene oxide/Fe 3 O 4 - imprinted nanoparticles for selective removal of sulfonylurea herbicides in cereals. J Sci Food Agric 2020; 100:3822-3831. [PMID: 32277468 DOI: 10.1002/jsfa.10419] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/29/2020] [Accepted: 04/10/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Sulfonylureas are potentially toxic broad-spectrum herbicides. They pose a persistent threat to food safety and the environment. It is therefore important to develop a rapid and efficient pretreatment and detection method to prevent their harmful effects on human health. RESULTS In the present work, a novel and highly selective absorbent for chlorosulfuron (CS) detection was prepared by the simple self-polymerization of dopamine on the surface of magnetic graphene oxide using a CS template. The resultant imprinted nanoparticles (MGO@PDA-MIPs) were characterized by transmission electron microscopy, X-ray diffraction, vibrating-sample magnetometry, thermogravimetric analysis, and nitrogen adsorption-desorption. The adsorption experiments demonstrated that the MGO@PDA-MIPs have excellent selectivity with regard to CS, with a high imprinting factor of 3.41 compared with a non-imprinted polymer. The nanoparticles rapidly achieve adsorption equilibrium and efficient desorption because there are numerous binding sites on the thin polydopamine imprinting layer. Under optimized conditions, the MGO@PDA-MIPs can be used to detect sulfonylurea residues in cereal samples by magnetic solid phase extraction coupled with high performance liquid chromatography (HPLC). The nanoparticles have a satisfactory recovery rate (80.65-101.01%) with a relative standard deviation (RSD) of less than 7.15%, and a limit of detection with regard to CS of 1.61 μg kg-1 (S/N = 3). They can also be re-used at least seven times. CONCLUSION The MGO@PDA-MIPs have outstanding recognition performance, and can be prepared by a facile, single-step, and environmentally friendly process. They therefore have excellent potential for the recognition and separation of trace sulfonylurea herbicides in complex matrices. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Jinxing He
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Yue Lu
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Tao Zhao
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Yingqiu Li
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
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González-Blanco C, Dörr FA, Albuquerque R, Onuki J, Pinto E. Alternative Isolation Protocol for Desulfo and Zwitterionic Cylindrospermopsin Alkaloids and Comparison of Their Toxicity in HepG2 Cells. Molecules 2020; 25:molecules25133027. [PMID: 32630766 PMCID: PMC7412431 DOI: 10.3390/molecules25133027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/29/2020] [Accepted: 06/29/2020] [Indexed: 12/26/2022] Open
Abstract
The term cylindrospermopsins (CYNs) refers to a structurally related class of cyanobacterial metabolites comprised of a tricyclic guanidine group and a hydroxymethyluracil moiety. Most reports in environmental aquatic samples refer to cylindrospermopsin (CYN), and reports on other CYN alkaloids are scarce, due, in part, to a lack of versatile isolation protocols. Thus, using commercially available solid phase extraction (SPE) cartridges, we optimized an isolation protocol for the complete recovery of CYN, 7-deoxy-cylindrospermopsin (7D-CYN) and 7-deoxy-desulfo-cylindrospermopsin (7D-desulfo-CYN) from the same aliquot. The isolation protocol was adaptable depending on the nature of the sample (solid biomass, culture broth or environmental water sample) and tolerates up to 4 L of dense culture broth or 400 mg of lyophilized biomass. To quantitate the CYN alkaloids, we validated an LC-DAD-MS2 method, which takes advantage of the UV absorption of the uracil group (λ 262 nm). Using electrospray ionization (ESI) in a positive ion mode, the high-resolution MS1 data confirms the presence of the protonated alkaloids, and the MS2 fragment assignment is reported as complementary proof of the molecular structure of the CYNs. We isolated three CYN alkaloids with different water solubility using the same lyophilized sample, with a purity that ranged from 95% to 99%. The biological activity of the purified CYNs, along with a synthetic degradation product of CYN (desulfo-cylindrospermopsin), was evaluated by assessing necrosis and apoptosis in vitro using flow cytometry. CYN’s lethal potency in HepG2 cells was greater than the other analogs, due to the presence of all four functional groups: guanidine, uracil, C-7 hydroxyl and the sulfate residue.
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Affiliation(s)
- Carlos González-Blanco
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-900, SP, Brazil; (C.G.-B.); (F.A.D.); (R.A.)
- Laboratory of Development and Innovation, Butantan Institute, Av. Vital Brasil, 1500, São Paulo 05503-900, SP, Brazil;
- Sección de Toxicología, Departamento de Ciencias Forenses, Organismo de Investigación Judicial, Heredia 40801, Costa Rica
| | - Felipe Augusto Dörr
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-900, SP, Brazil; (C.G.-B.); (F.A.D.); (R.A.)
| | - Renata Albuquerque
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-900, SP, Brazil; (C.G.-B.); (F.A.D.); (R.A.)
| | - Janice Onuki
- Laboratory of Development and Innovation, Butantan Institute, Av. Vital Brasil, 1500, São Paulo 05503-900, SP, Brazil;
| | - Ernani Pinto
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-900, SP, Brazil; (C.G.-B.); (F.A.D.); (R.A.)
- Centre for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba 13416-000, SP, Brazil
- Correspondence: ; Tel.: +55-193429-4779
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Li N, Nie H, Jiang L, Ruan G, Du F, Liu H. Recent advances of ambient ionization mass spectrometry imaging in clinical research. J Sep Sci 2020; 43:3146-3163. [PMID: 32573988 DOI: 10.1002/jssc.202000273] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/03/2020] [Accepted: 05/06/2020] [Indexed: 02/06/2023]
Abstract
The structural information and spatial distribution of molecules in biological tissues are closely related to the potential molecular mechanisms of disease origin, transfer, and classification. Ambient ionization mass spectrometry imaging is an effective tool that provides molecular images while describing in situ information of biomolecules in complex samples, in which ionization occurs at atmospheric pressure with the samples being analyzed in the native state. Ambient ionization mass spectrometry imaging can directly analyze tissue samples at a fairly high resolution to obtain molecules in situ information on the tissue surface to identify pathological features associated with a disease, resulting in the wide applications in pharmacy, food science, botanical research, and especially clinical research. Herein, novel ambient ionization techniques, such as techniques based on spray and solid-liquid extraction, techniques based on plasma desorption, techniques based on laser desorption ablation, and techniques based on acoustic desorption were introduced, and the data processing of ambient ionization mass spectrometry imaging was briefly reviewed. Besides, we also highlight recent applications of this imaging technology in clinical researches and discuss the challenges in this imaging technology and the perspectives on the future of the clinical research.
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Affiliation(s)
- Na Li
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P. R. China
- College of Chemistry and Molecular Engineering, Peking University, Beijing, P. R. China
| | - Honggang Nie
- College of Chemistry and Molecular Engineering, Peking University, Beijing, P. R. China
| | - Liping Jiang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P. R. China
| | - Guihua Ruan
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P. R. China
| | - Fuyou Du
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P. R. China
- College of Biological and Environmental Engineering, Changsha University, Changsha, P. R. China
| | - Huwei Liu
- College of Chemistry and Molecular Engineering, Peking University, Beijing, P. R. China
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Kang J, Cao D. Optimization of the silica-gel adsorption technique for the extraction of phytosterol glycosides from soybean lecithin powder using response surface methodology and artificial neural network models. J Food Sci 2020; 85:1971-1982. [PMID: 32529719 DOI: 10.1111/1750-3841.15183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 04/12/2020] [Accepted: 04/20/2020] [Indexed: 12/12/2022]
Abstract
Phytosterol glycosides (PGs), comprising both acylated steryl glycosides (ASGs) and steryl glycosides (SGs), are active ingredients with benefits for human use. Here, we aimed to optimize the silica-gel adsorption technique for the extraction of PGs from soybean lecithin powder, which contains 5 to 10% of these glycolipids. Both response surface methodology (RSM) and artificial neural networks (ANNs) were applied to optimize the PG extraction parameters (X1 = silica-gel dosage, X2 = adsorption temperature, and X3 = lecithin concentration) for high-purity phospholipid and PG production, and their prediction and optimization accuracies were compared. Although both models fitted well with the experimental data, the ANN model demonstrated better accuracy for predicting and optimizing the conditions using four interrelated dependent variables (Y1 = phospholipid yield, Y2 = ASG recovery, Y3 = SG recovery, and Y4 = PG purity) and had a higher coefficient of determination and lower root mean square error and absolute average deviation. After digitally setting the percentages of the four dependent variables for phospholipid and PG production, the ANN-optimized phospholipid product (Y1 = 88.07%, Y2 = 98.89%, Y3 = 100%, and Y4 = 49.03%) was acquired at X1 = 3.54 g/g, X2 = 26 °C, and X3 = 43 mg/mL, whereas the PG product (Y1 = 83.83%, Y2 = 97.64%, Y3 = 100%, and Y4 = 59.21%) was obtained at X1 = 2.00 g/g, X2 = 28.38 °C, and X3 = 41 mg/mL. In conclusion, the ANN method was better than RSM for the optimization of the silica-gel adsorption technique for PG extraction from soybean lecithin powder. PRACTICAL APPLICATION: This paper lays a theoretical foundation for the optimization of the industrial production of phytosterol glycosides and the comprehensive utilization of lecithin resources.
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Affiliation(s)
- Jingjing Kang
- Natl. Engineering Laboratory for Food Science and Technology, Oil and Plant Protein Center, School of Food Science and Technology, Jiangnan Univ., 1800 Lihu Rd, Wuxi, Jiangsu Province, 214122, P. R. China
| | - Dong Cao
- Natl. Engineering Laboratory for Food Science and Technology, Oil and Plant Protein Center, School of Food Science and Technology, Jiangnan Univ., 1800 Lihu Rd, Wuxi, Jiangsu Province, 214122, P. R. China
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Gbashi S, Njobeh PB, Madala NE, De Boevre M, Kagot V, De Saeger S. Parallel validation of a green-solvent extraction method and quantitative estimation of multi-mycotoxins in staple cereals using LC-MS/MS. Sci Rep 2020; 10:10334. [PMID: 32587262 PMCID: PMC7316717 DOI: 10.1038/s41598-020-66787-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 05/13/2020] [Indexed: 11/21/2022] Open
Abstract
In this study, 15 different mycotoxins were estimated in three staple cereals from selected agro-ecological regions in Nigeria using a 'novel' green extraction method, pressurized hot water extraction (PHWE) in comparison to a conventional solvent extraction method. Discrimination of the results of PHWE and solvent extraction using principal component analysis (PCA) and orthogonal projection to latent structures discriminate analysis (OPLS-DA) did not yield any differential clustering patterns. All maize samples (n = 16), 32% (n = 38) of sorghum and 35% (n = 37) of millet samples were positive for at least one of the 15 tested mycotoxins. Contamination levels for the cereals were higher in the warm humid rain forest region and gradually decreased towards the hot and arid region in the north of the country. The results demonstrate the applicability of PHWE as a possible alternative extraction method to conventional methods of extraction, which are solvent based.
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Affiliation(s)
- Sefater Gbashi
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, P.O Box 17011, Doornfontein Campus, 2028, Gauteng, South Africa.
| | - Patrick Berka Njobeh
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, P.O Box 17011, Doornfontein Campus, 2028, Gauteng, South Africa.
| | - Ntakadzeni Edwin Madala
- Department of Biochemistry, School of Mathematical and Natural Sciences, University of Venda, Thohoyandou, South Africa
| | - Marthe De Boevre
- Centre of Excellence in Mycotoxicology and Public Health, Department of Bioanalysis, Ghent University, 9000, Ghent, Belgium
| | - Victor Kagot
- Centre of Excellence in Mycotoxicology and Public Health, Department of Bioanalysis, Ghent University, 9000, Ghent, Belgium
| | - Sarah De Saeger
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, P.O Box 17011, Doornfontein Campus, 2028, Gauteng, South Africa
- Centre of Excellence in Mycotoxicology and Public Health, Department of Bioanalysis, Ghent University, 9000, Ghent, Belgium
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12
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Fernandes VC, Luts W, Delerue-Matos C, Domingues VF. Improved QuEChERS for Analysis of Polybrominated Diphenyl Ethers and Novel Brominated Flame Retardants in Capsicum Cultivars Using Gas Chromatography. J Agric Food Chem 2020; 68:3260-3266. [PMID: 32050063 DOI: 10.1021/acs.jafc.9b07041] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
One of the main challenges for analytical laboratories and food safety authorities is the control of food contaminants hazardous to human health. For the first time, a simple, fast, and cost-effective sample preparation method is proposed as an extraction technique to determine 12 brominated flame retardants (BFRs) (seven polybrominated diphenyl ether (PBDE) congeners and five novel BFRs) in Capsicum cultivars. Different QuEChERS and dispersive solid-phase extract (d-SPE) sorbent compositions were evaluated in terms of recovery and matrix effects. The best results were obtained with citrate-buffered version QuEChERS and a cleanup step, with 150 mg of MgSO4, 50 mg of primary secondary amine (PSA), 50 mg of C18, and 5 mg of carbon. The limit of detection (LOD) was between 1.4 and 9.3 μg/kg and R2 > 0.99. Recoveries and matrix effects were between 66 and 104% and 0.58 and 2.18, respectively. The relative standard deviations from repeatability and reproducibility studies and estimation of measurement uncertainty were lower than 20%. Gas chromatography coupled with a mass spectrometer was used to confirm the presence of BFRs in the samples. Novel BFRs were detected lower than the LOD.
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Affiliation(s)
- Virgínia Cruz Fernandes
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr° António Bernardino de Almeida, 431, 4200-072 Porto, Portugal
| | - Ward Luts
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr° António Bernardino de Almeida, 431, 4200-072 Porto, Portugal
- Faculty of Engineering Technology, Hasselt University, KU Leuven, 3590 Diepenbeek, Belgium
| | - Cristina Delerue-Matos
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr° António Bernardino de Almeida, 431, 4200-072 Porto, Portugal
| | - Valentina F Domingues
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr° António Bernardino de Almeida, 431, 4200-072 Porto, Portugal
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13
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Sereshti H, Khodayari F, Nouri N. Integrated in-syringe magnetic sheet solid-phase extraction and dispersive liquid-liquid microextraction for determination of aflatoxins in fresh and moldy breads. J Sci Food Agric 2020; 100:1048-1055. [PMID: 31677164 DOI: 10.1002/jsfa.10109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/03/2019] [Accepted: 10/06/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Magnetic three-dimensional graphene-based nanoadsorbents have unique characteristics such as large surface area, good thermal and chemical stability, and high adsorption capacity that make them efficient materials in sorbent-based extraction techniques. In this study, four aflatoxins (AFs) were analyzed in bread samples using magnetic three-dimensional graphene as the adsorbent phase in dispersive micro solid-phase extraction. RESULTS AND CONCLUSIONS In-syringe magnetic sheet solid-phase extraction based on magnetic three-dimensional graphene in tandem with dispersive liquid-liquid microextraction was used for the extraction and preconcentration of the target AFs. The effect of significant parameters of the method was investigated and the optimum conditions were determined as follows: adsorbent dosage, 20 mg; desorption/disperser solvent (methanol) volume, 700 μL; desorption solvent flow rate, 0.7 mL min-1 ; pH, neutral; salt (NaCl) concentration, 10% (w/v); extraction solvent (chloroform) volume, 250 μL; and centrifugation rate (and time), 4000 rpm (5 min). The limits of detection and quantification were in the ranges 0.043-0.083 and 0.14-0.28 μg kg-1 , respectively. The extraction method was followed by the HPLC technique with fluorescence detection and applied to the determination of the AFs in four different Iranian fresh and moldy bread samples. The relative recoveries were in the range 84-107% with relative standard deviations of 3.9-8.6%. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Hassan Sereshti
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Farnaz Khodayari
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Nina Nouri
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
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14
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Guo M, Liu S, Wang M, Lv Y, Shi J, Zeng Y, Ye J, Chu Q. Double surfactants-assisted electromembrane extraction of cyromazine and melamine in surface water, soil and cucumber samples followed by capillary electrophoresis with contactless conductivity detection. J Sci Food Agric 2020; 100:301-307. [PMID: 31525264 DOI: 10.1002/jsfa.10039] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/06/2019] [Accepted: 09/11/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Cyromazine (CYR) and its main degradation product melamine (MEL) are attracting wide attention due to their potential hazards to the environment and humans. In this work, double surfactants-assisted electromembrane extraction (DS-EME) by Tween 20 and alkylated phosphate was firstly used for purification and extraction of CYR and MEL, and the extract was directly analyzed by capillary electrophoresis with capacitively coupled contactless conductivity detection. RESULTS Under the optimum conditions, two targets could be well separated from the main interferences, including common biogenic amines and inorganic cations within 14 min. This developed method was successfully applied to the analyses of surface water, soil and cucumber samples, and the average recoveries were in the range 93.3-112%. DS-EME provided a synergistic purification and enrichment effect for CYR and MEL by adding Tween 20 and alkylated phosphate into donor phase and supporting liquid membrane, respectively. Satisfactory limits of detection [0.2-1.5 ng mL-1 , signal-to-noise ratio (S/N) = 3] could be obtained in the tested sample matrices, and the corresponding enrichment factors were up to 115∼123 times. CONCLUSION This developed method provides an alternative for the simultaneous analysis of CYR and MEL in complex real-world samples. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Mengnan Guo
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Shiyu Liu
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Manman Wang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Yifei Lv
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Jialei Shi
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Yuan Zeng
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | | | - Qingcui Chu
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
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15
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Vocat C, Dunand M, Hubers SA, Bourdillon N, Millet GP, Brown NJ, Wuerzner G, Grouzmann E, Eugster PJ. Quantification of Neuropeptide Y and Four of Its Metabolites in Human Plasma by Micro-UHPLC-MS/MS. Anal Chem 2020; 92:859-866. [PMID: 31790196 PMCID: PMC8541045 DOI: 10.1021/acs.analchem.9b03505] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Neuropeptide Y (NPY) is a 36-amino acid peptide circulating at a subpicomolar concentration participating in multiple physiological and pathological processes. NPY is prone to peptidolysis, generating metabolites with modified affinity for the five known receptors of NPY that mediate distinct effects. It is, therefore, crucial to distinguish each metabolite to understand the multiple functions of NPY. Since immunoassays are not able to distinguish NPY from its metabolites, we have validated a microliquid chromatography tandem mass spectrometry (micro-LC-MS/MS) assay for the quantification of endogenous NPY, NPY2-36, NPY3-36, NPY1-35, and NPY3-35 in human plasma. Sample preparation relies on immunoextraction in 96-well plates, followed by solid-phase extraction prior to micro-LC-MS/MS. The LLOQ ranged from 0.03 to 0.16 pM, intra- and inter-assay precision were <27% and trueness <22%. We determined reference intervals in 155 healthy volunteers and 40 hypertensive patients. We found that NPY3-36 is the main circulating peptide in resting conditions and that NPY and catecholamines are simultaneously increased during orthostasis. We also showed that the concentrations of NPY and its metabolites are similar in healthy volunteers and hypertensive patients. NPY is the prototype peptide that circulates in concentrations expected to be beyond instrumental capacities. We have been successful in developing a high-throughput specific and sensitive assay by including a deep knowledge of the physicochemical properties of these peptides to an efficient multistep sample preparation, and a micro-LC chromatography. We believe that our methodological approach opens the possibility to selectively quantify other endogenous peptides cleaved by peptidases whose concentrations are below 1 pM.
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Affiliation(s)
- Céline Vocat
- Service of Clinical Pharmacology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Marielle Dunand
- Service of Clinical Pharmacology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Scott A. Hubers
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
| | - Nicolas Bourdillon
- Institute of Sport Sciences (ISSUL), University of Lausanne, 1015 Lausanne, Switzerland
| | - Grégoire P. Millet
- Institute of Sport Sciences (ISSUL), University of Lausanne, 1015 Lausanne, Switzerland
| | - Nancy J. Brown
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
| | - Grégoire Wuerzner
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Eric Grouzmann
- Service of Clinical Pharmacology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Philippe J. Eugster
- Service of Clinical Pharmacology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
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Rodríguez-Ramos R, Socas-Rodríguez B, Santana-Mayor Á, Rodríguez-Delgado MÁ. Nanomaterials as alternative dispersants for the multiresidue analysis of phthalates in soil samples using matrix solid phase dispersion prior to ultra-high performance liquid chromatography tandem mass spectrometry. Chemosphere 2019; 236:124377. [PMID: 31548171 DOI: 10.1016/j.chemosphere.2019.124377] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 06/04/2019] [Accepted: 07/14/2019] [Indexed: 06/10/2023]
Abstract
In this study, the application of different nanomaterials as dispersants in matrix solid phase dispersion has been evaluated for the extraction of fifteen phthalates from different environmental samples prior to their separation and quantification by ultra-high performance liquid chromatography coupled to triple quadrupole mass spectrometry. Within the evaluated nanomaterials, including graphene oxide, multi-walled carbon nanotubes and iron 1,3,5-benzenetricarboxylate metal-organic framework, the last one showed the best results in terms of extraction capacity and sample clean-up. The effects of the different parameters affecting the sample pretreatment efficiency were exhaustively evaluated. The whole methodology was validated for agricultural soil and sand, using dibutyl phthalate-3,4,5,6-d4 as surrogate. Recovery values ranged from 70 to 120% for both matrices with RSD values lower than 20% and the limits of quantification of the method achieved were in the range 0.14-2.7 μg/kg dry weight. Finally, the analysis of soil samples from different locations of Tenerife (Canary Islands, Spain) was carried out finding the presence of BBP, DIBP and DBP in the range 5-52 μg/kg dry weight in agricultural soils, and DIPP, DNOP and DINP in the range 2-101 μg/kg dry weight in sand samples.
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Affiliation(s)
- Ruth Rodríguez-Ramos
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL). Avda. Astrofísico Fco. Sánchez, s/n, 38206, San Cristóbal de La Laguna, España
| | - Bárbara Socas-Rodríguez
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL). Avda. Astrofísico Fco. Sánchez, s/n, 38206, San Cristóbal de La Laguna, España.
| | - Álvaro Santana-Mayor
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL). Avda. Astrofísico Fco. Sánchez, s/n, 38206, San Cristóbal de La Laguna, España
| | - Miguel Ángel Rodríguez-Delgado
- Departamento de Química, Unidad Departamental de Química Analítica, Facultad de Ciencias, Universidad de La Laguna (ULL). Avda. Astrofísico Fco. Sánchez, s/n, 38206, San Cristóbal de La Laguna, España.
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17
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Yang B, Wang L, Luo C, Wang X, Sun C. Simultaneous Determination of 11 Aminoglycoside Residues in Honey, Milk, and Pork by Liquid Chromatography with Tandem Mass Spectrometry and Molecularly Imprinted Polymer Solid Phase Extraction. J AOAC Int 2019; 100:1869-1878. [PMID: 28786377 DOI: 10.5740/jaoacint.16-0399] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Abstract
An analytical method was developed for the simultaneous determination of 11 aminoglycoside (AG) antibiotics, including amikacin, paromomycin, dihydrostreptomycin, gentamicin C1a, hygromycin, kanamycin, netilmicin, spectinomycin, sisomicin, streptomycin, and tobramycin in honey, milk, and pork samples by LC with tandem MS and molecularly imprinted polymer (MIP) SPE. The AG antibiotics in milk and homogenated meat samples were extracted with a solution composed of 10 mmol/L potassium dihydrogen phosphate, 0.4 mmol/L EDTA-Na2, and 2% trichloroacetic acid. For honey samples, the extractant was 50 mmol/L potassium dihydrogen phosphate. The extracts were cleaned up with MIP SPE cartridges. The separation was performed on a zwitter ionic-HILIC column (50 × 2.1 mm, 3.5 μm), with the mobile phase consisting of methanol, 0.3% formic acid, and 175 mmol/L ammonium formate at 0.50 mL/min in gradient elution. A triple-quadrupole mass spectrometer equipped with an electrospray ionization source, which was operated in positive mode, was used for detection. The quantification was based on matrix-matched calibration curves. The method was applied to real samples with three different matrixes. The LODs of the method were 2–30 μg/kg and the LOQs were 7–100 μg/kg; the average recovery ranged from 78.2 to 94.8%; intraday RSDs and interday RSDs were ≤15 and ≤18%, respectively; and the absolute values of matrix effect for all AGs were RSDs ≤23%.
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Affiliation(s)
- Bixia Yang
- Sichuan University, West China School of Public Health, Chengdu 610041, China
| | - Lian Wang
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
| | - Chunying Luo
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
| | - Xixi Wang
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
| | - Chengjun Sun
- Sichuan University, West China School of Public Health, Chengdu 610041, China; Provincial Key Laboratory for Food Safety Monitoring and Risk Assessment of Sichuan, Chengdu 610041, China
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18
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Swiner DJ, Jackson S, Durisek GR, Walsh BK, Kouatli Y, Badu-Tawiah AK. Microsampling with cotton thread: Storage and ultra-sensitive analysis by thread spray mass Spectrometry. Anal Chim Acta 2019; 1082:98-105. [PMID: 31472717 PMCID: PMC6814156 DOI: 10.1016/j.aca.2019.07.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/05/2019] [Accepted: 07/07/2019] [Indexed: 12/24/2022]
Abstract
Storage and quantitative analysis of small volumes of biofluids are challenging, especially when low concentrations of analytes are to be detected in the presence of complex matrices. In this study, we describe an integrated thread-based approach for stabilizing small blood volumes in the dry-state at room temperature, while also offering direct analysis capabilities via thread spray mass spectrometry. The analytical merits of this novel microsampling platform was demonstrated via the direct analysis of diazepam and cocaine in dried blood samples stored for 42 days. In-situ in-capillary blood processing from hydrophobic threads enabled limits of detection as low as parts-per-quadrillion to be reached. We validated this ultra-sensitivity by analyzing small tissue-like residues collected after pushing a thread through the sample once. The implications of this sample collection, storage, and analysis platform can be extensive with direct applications in forensics and clinical studies.
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Affiliation(s)
- Devin J Swiner
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43110, USA
| | - Sierra Jackson
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43110, USA
| | - George R Durisek
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43110, USA
| | - Bridget K Walsh
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43110, USA
| | - Yaman Kouatli
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43110, USA
| | - Abraham K Badu-Tawiah
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43110, USA.
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19
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Wang M, Nie H, Han D, Qiao X, Yan H, Shen S. Cauliflower-like resin microspheres with tuneable surface roughness as solid-phase extraction adsorbent for efficient extraction and determination of plant growth regulators in cucumbers. Food Chem 2019. [PMID: 31174757 DOI: 10.1016/j.foodchem.2019.05.13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
New cauliflower-like phloroglucinol-glyoxylic acid resin microspheres (PGRMs) with controllable diameters and tuneable surface roughness were prepared using a one-step environmentally-friendly method without a catalyst. The PGRMs obtained exhibited a rough surface, narrow size distribution, and excellent adsorption capacity for polar compounds. The PGRMs were employed as an adsorbent for solid phase extraction (SPE) of kinetin (KT) and 6-benzyladenine (6-BA) in cucumbers and demonstrated better extraction recoveries and purification efficiency than phloroglucin-formaldehyde resin and common commercial adsorbents. Our PGRMs-SPE-HPLC method showed good linearity (r ≥ 0.9997) ranging from 0.04 to 4.00 μg/g for KT and 6-BA, and recoveries at three spiked concentration ranged from 77.8% to 104.4% with RSDs ≤ 6.8%. This PGRMs-SPE-HPLC method was applied successfully to determine of KT and 6-BA in cucumbers.
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Affiliation(s)
- Mingwei Wang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, China
| | - Hailiang Nie
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, China
| | - Dandan Han
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, China
| | - Xiaoqiang Qiao
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, China
| | - Hongyuan Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Public Health, Hebei University, Baoding 071002, China.
| | - Shigang Shen
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
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20
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Pinto IA, Toloza CAT, Almeida JMS, da Silva AR, Larrude DG, Aucélio RQ. Quantification of neomycin in rubella vaccine by off/on metal ion mediated photoluminescence from functionalized graphene quantum dots. Spectrochim Acta A Mol Biomol Spectrosc 2019; 220:117139. [PMID: 31146209 DOI: 10.1016/j.saa.2019.117139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/16/2019] [Accepted: 05/16/2019] [Indexed: 06/09/2023]
Abstract
The determination of neomycin sulfate was made using photoluminescent amino-functionalized graphene quantum dots (obtained from hydro-exfoliation of a mixture of citric acid and glutathione). From the several ions tested, Fe3+ was the best mediator to enable an off/on photoluminescence effect used for quantification. The mediation of Fe3+ was found to be crucial as it is responsible for the photoluminescence quenching effect, due to the interaction with quantum dots surface, also having large affinity towards neomycin that removes Fe3+ from the surface of GQDs, consequently, promoting restoration of the original nanomaterial photoluminescence. Such signal restoration was proportional to the neomycin sulfate concentration added. The linearized analytical response covered three orders of magnitude (10-7 to 10-5 mol L-1). The proposed method is an alternative to those requiring labor-intensive procedures for chemical the derivatization of neomycin (due to the lack of chromophore groups in aminoglycosides). The method was successfully tested in the analysis of rubella vaccine containing trace residues of neomycin and in pharmaceutical compositions containing neomycin sulfate after solid phase extraction using an aminoglycoside imprinted polymer to improve selectivity in determinations.
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Affiliation(s)
- Igor Araújo Pinto
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil
| | - Carlos A T Toloza
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil; Chemistry Program, Universidad del Atlántico, Puerto Colombia, Atlántico, Colombia
| | - Joseany M S Almeida
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil
| | - Andrea R da Silva
- Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (CEFET/RJ), 27600-000 Valença, RJ, Brazil
| | - Dunieskys G Larrude
- MackGraphe-Graphene and Nanomaterial Research Center, Mackenzie Presbyterian University, 01302-907 São Paulo, Brazil
| | - Ricardo Q Aucélio
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, 22451-900, Brazil.
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21
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Pang X, Liu H, Yu H, Zhang M, Bai L, Yan H. A metal organic framework polymer monolithic column as a novel adsorbent for on-line solid phase extraction and determination of ursolic acid in Chinese herbal medicine. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1125:121715. [PMID: 31323557 DOI: 10.1016/j.jchromb.2019.121715] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 06/27/2019] [Accepted: 07/08/2019] [Indexed: 10/26/2022]
Abstract
A metal organic framework (MOF)-polymer monolithic column was prepared by redox initiation using modified MOF and N-methylolacrylamide (NMA) as co-monomers. The obtained monolithic column was characterized by scanning electron microscopy (SEM) and nitrogen adsorption-desorption isotherm measurement. It was used as a solid phase extraction (SPE) absorbent for the online enrichment of ursolic acid (UA) by high performance liquid chromatography. The adsorption amount of UA on the monolith was compared with that of silica gel-C18 adsorbent and the monolith without MOF material. The MOF-polymer monolithic column showed high selectivity and good permeability. Under the optimum conditions for extraction and determination, the calibration equation was y = 79.854× + 0.1939; the linear range was 0.001-0.9 mg/mL; the linear regression coefficient was 0.9993; the limit of detection (LOD) and the limit of quantification (LOQ) were 0.17 μg/mL and 0.57 μg/mL, respectively; the inter-day and intra-day accuracies were <6.44%; the recovery was in the range of 86.52-105.26%. The MOF-polymer monolithic column was successfully used as SPE column for enrichment and determination of UA in Chinese herbal medicine.
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Affiliation(s)
- Xiaoya Pang
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding 071002, China
| | - Haiyan Liu
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding 071002, China.
| | - Huan Yu
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding 071002, China
| | - Miaomiao Zhang
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding 071002, China
| | - Ligai Bai
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding 071002, China.
| | - Hongyuan Yan
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding 071002, China
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Ma S, Wang M, You T, Wang K. Using Magnetic Multiwalled Carbon Nanotubes as Modified QuEChERS Adsorbent for Simultaneous Determination of Multiple Mycotoxins in Grains by UPLC-MS/MS. J Agric Food Chem 2019; 67:8035-8044. [PMID: 31282154 DOI: 10.1021/acs.jafc.9b00090] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The simultaneous detection of multiple mycotoxins is important due to the increased toxic effects of combined mycotoxins in grains. In this research, a combination of modified QuEChERS with ultrahigh-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was used for simultaneous detection of 20 mycotoxins in grains. A series of different types of magnetic (Fe3O4) nanoparticles modified with multiwalled carbon nanotubes (Fe3O4-MWCNTs) were designed as modified QuEChERS adsorbents for facile and efficient purification and for target interferences removal in the matrices. When there is an external magnetic field, the proposed modified QuEChERS method uses a shorter pretreatment time compared with the traditional QuEChERS method, which makes it possible to conduct high-throughput analyses. To optimize the QuEChERS process, the extraction solvent and the type and amount of the Fe3O4-MWCNTs were investigated. Under optimal conditions, the method was validated and showed satisfactory linearity (r2 ≥ 0.9965), good recovery (73.5-112.9%), good precision (1.3-12.7%), and excellent sensitivity (ranging from 0.0021 to 5.4457 ng g-1), which indicates that this method can be used for detecting multiple mycotoxins in real samples.
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Affiliation(s)
- Shuai Ma
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang 212013 , P.R. China
- Beijing Research Center for Agricultural Standards and Testing, Risk Assessment Laboratory for Agro-Products (Beijing), Ministry of Agriculture , Beijing Municipal Key Laboratory of Agriculture Environment Monitoring , No. 9 Middle Road of Shu Guang Hua Yuan, Haidian Dist. , Beijing 100097 , P.R. China
| | - Meng Wang
- Beijing Research Center for Agricultural Standards and Testing, Risk Assessment Laboratory for Agro-Products (Beijing), Ministry of Agriculture , Beijing Municipal Key Laboratory of Agriculture Environment Monitoring , No. 9 Middle Road of Shu Guang Hua Yuan, Haidian Dist. , Beijing 100097 , P.R. China
| | - Tianyan You
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang 212013 , P.R. China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering , Jiangsu University , Zhenjiang 212013 , P.R. China
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P.R. China
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Huang Y, Zhao T, He J. Preparation of magnetic molecularly imprinted polymers for the rapid detection of diethylstilbestrol in milk samples. J Sci Food Agric 2019; 99:4452-4459. [PMID: 30866048 DOI: 10.1002/jsfa.9682] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 02/26/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Diethylstilbestrol (DES) residues are harmful to human health because of their potential carcinogenic properties. Therefore, it is important to develop a fast and efficient pretreatment method to prevent their harmful effects on human health and the environment. RESULTS In this paper, two types of magnetic molecularly imprinted polymers (MMIPs) of DES were prepared by bulk polymerization and the sol-gel method, respectively. The synthetic materials were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. Adsorption capacities of the bulk and sol-gel MMIPs were investigated. A rapid detection method was developed using the two types of MMIPs as sorbents, coupled to high-performance liquid chromatography, for the determination of DES residues in milk samples. Under optimized conditions, the limit of detection (S/N = 3) of both methods for DES was 2.0 μg L-1 ; and the linear response range to DES was 0.1-500 mg L-1 . The milk samples were analyzed according to this method with good recoveries of 88.3-97.6 and 90.5-103.5% for the two types of MMIPs, respectively. CONCLUSIONS The method described had high sensitivity and high selectivity, and could prove to be a new method for the rapid determination of DES residues in milk samples. © 2019 Society of Chemical Industry.
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Affiliation(s)
- YuXia Huang
- Food Science and Engineering, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Tao Zhao
- Food Science and Engineering, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Jinxing He
- Food Science and Engineering, School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
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24
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Kang J, Che Y, Yan N, Cao D. Evaluation system construction and factor impact analysis of silica-gel adsorption to extract phytosterol glycosides from soybean lecithin powder. J Sci Food Agric 2019; 99:4287-4295. [PMID: 30828812 DOI: 10.1002/jsfa.9661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 02/16/2019] [Accepted: 02/24/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Soybean lecithin powders are good sources of phytosterol glucosides (PGs) containing acyl-sterylglycosides (ASGs) and sterylglucosides (SGs), but PG extraction from soybean lecithin powder is difficult due to the solubilizing property of phospolipids. To comprehensively utilize soybean lecithin resources, an evaluation system construction and factor impact analysis of PG extraction by silica-gel adsorption was investigated in this article. RESULTS With high-performance liquid chromatography (HPLC) as the main experimental analysis method, software such as SIMICA and SPSS were applied to construct an evaluation system of PG extraction. Different from scores plot in SIMICA for distinguishing samples in chloroform from others, the loading plot and binary variant correlation analysis of all indicators in PG extraction were brought to confirm four evaluation indicators containing PG purity, ASG recovery, SG recovery and phospholipid recovery. In the factor impact analysis, four times elution from silica-gel sediment was enough to achieve a PG product with least reagent waste, while SPW in petroleum ether at 50 mg mL-1 with 1:3 silica-gel dosage (lecithin/silica-gel, w/w) was then determined as the optimum of single factors. CONCLUSION All studies in this article were of great significance, as they laid foundations for research of PG extraction procedure, as well as PG industrial production, facilitating the comprehensive utilization of lecithin resources. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Jingjing Kang
- Oil and Plant Protein Center, National Engineering Laboratory for Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, P. R. China
| | - Yubo Che
- Oil and Plant Protein Center, National Engineering Laboratory for Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, P. R. China
| | - Nan Yan
- Oil and Plant Protein Center, National Engineering Laboratory for Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, P. R. China
| | - Dong Cao
- Oil and Plant Protein Center, National Engineering Laboratory for Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, P. R. China
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25
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Zhang WJ, Li D, Xu Y, Jiang Z, Chen Y, Wang P. Synthesis and Application of Novel Molecularly Imprinted Solid Phase Extraction Materials Based on Carbon Nanotubes for Determination of Carbofuran in Human Serum by High Performance Liquid Chromatography. J Agric Food Chem 2019; 67:5105-5112. [PMID: 31034223 DOI: 10.1021/acs.jafc.9b00967] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Novel molecularly imprinted polymers (MIPs) based on multiwalled carbon nanotubes (MWNTs) were synthesized using carbofuran as template, methacrylic acid as functional monomer, and trimethylolpropane trimethacrylate as cross-liking agent, respectively. Characterization results showed that the carbofuran MIPs have been successfully grafted onto the surface of MWNTs as a thin layer with high stability. The results of adsorption dynamics indicated that the synthesized MWNT-MIPs displayed a biphase adsorption profile and good selective recognition to carbofuran with equilibrium adsorption of 106.2 mg/g. The MWNTs-MIPs synthesized were further applied as the adsorbent material of solid-phase extraction (SPE) for the pretreatment of carbofuran in human serum, analyzed using high performance liquid chromatograph (HPLC). The recoveries obtained ranged from 89.0 ± 4.8 to 93.6 ± 3.2, showing that the MWNTs-MIPs-SPE system developed have specific recognition toward carbofuran. Results above indicated that the proposed system filled with synthesized MWNTs-MIPs provided a fast and selective extraction of carbofuran in serum.
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Affiliation(s)
- Wen-Ji Zhang
- Department of Forensic Medicine , Criminal Investigation Police University of China , Shenyang 110035 , P. R. China
| | - Dong Li
- Department of Forensic Chemistry , Criminal Investigation Police University of China , Shenyang 110035 , P. R. China
| | - Yingjian Xu
- Department of Forensic Chemistry , Criminal Investigation Police University of China , Shenyang 110035 , P. R. China
| | - Zhaolin Jiang
- Department of Forensic Chemistry , Criminal Investigation Police University of China , Shenyang 110035 , P. R. China
| | - Yang Chen
- Department of Forensic Chemistry , Criminal Investigation Police University of China , Shenyang 110035 , P. R. China
| | - Peng Wang
- Department of Forensic Medicine , Criminal Investigation Police University of China , Shenyang 110035 , P. R. China
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26
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Huang Y, Li C, Hu H, Wang Y, Shen M, Nie S, Chen J, Zeng M, Xie M. Simultaneous Determination of Acrylamide and 5-Hydroxymethylfurfural in Heat-Processed Foods Employing Enhanced Matrix Removal-Lipid as a New Dispersive Solid-Phase Extraction Sorbent Followed by Liquid Chromatography-Tandem Mass Spectrometry. J Agric Food Chem 2019; 67:5017-5025. [PMID: 30839206 DOI: 10.1021/acs.jafc.8b05703] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The goal of this study was to develop a method for simultaneous determination of acrylamide (AA) and 5-hydroxymethylfurfural (5-HMF) in heat-processed foods by liquid chromatography-tandem mass spectrometry analysis. Several cleanup methods for the quick, easy, cheap, effective, rugged, and safe (QuEChERS) protocol were investigated and compared: (a) dispersive solid-phase extraction (d-SPE) with Enhanced Matrix Removal-Lipid (EMR-Lipid), (b) d-SPE with primary secondary amine, (c) without the cleanup step, and (d) cleanup with n-hexane. It is the first time that EMR-Lipid sorbent has been used as a d-SPE material to detect AA and 5-HMF in heat-processed foods, and among the four cleanup methods, the EMR-Lipid method provided the best cleanup of co-extracted matrix interferences and the highest extraction efficiency. Validation experiments were carried out for the method using EMR-Lipid as the d-SPE sorbent. Excellent linearity ( R2 > 0.999) was achieved, and the limits of detection (LODs) of AA and 5-HMF were 2.5 and 12.5 μg/kg, respectively. The recoveries of AA and 5-HMF levels obtained were in the ranges of 87.3-103.3 and 83.2-104.3%, with precision [relative standard deviations (RSDs)] of 1.2-6.8 and 1.4-7.4% ( n = 3), respectively. The method is accurate and reliable and was successfully applied to analyze the AA and 5-HMF in eight categories of Chinese heat-processed foods.
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Affiliation(s)
- Yousheng Huang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
- Jiangxi Institute of Analysis and Testing , Nanchang , Jiangxi 330029 , People's Republic of China
| | - Chang Li
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Huiyu Hu
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Yuting Wang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Mingyue Shen
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Shaoping Nie
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
| | - Jie Chen
- State Key Laboratory of Food Science and Technology , Jiangnan University , Wuxi , Jiangsu 214122 , People's Republic of China
| | - Maomao Zeng
- State Key Laboratory of Food Science and Technology , Jiangnan University , Wuxi , Jiangsu 214122 , People's Republic of China
| | - Mingyong Xie
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang) , Nanchang University , 235 Nanjing East Road , Nanchang , Jiangxi 330047 , People's Republic of China
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27
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Surendran S, Paul D, Pokharkar S, Choulwar S, Deshpande A, Giri S, Satheeshkumar N. Novel Bruton tyrosine kinase inhibitor acalabrutinib quantification by validated LC-MS/MS method: An application to pharmacokinetic study in Sprague Dawley rats. J Pharm Biomed Anal 2019; 164:509-513. [PMID: 30453157 DOI: 10.1016/j.jpba.2018.11.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/18/2018] [Accepted: 11/05/2018] [Indexed: 12/29/2022]
Abstract
USFDA has approved a novel Bruton tyrosine kinase (BTK) inhibitor acalabrutinib (ACA) for the treatment of mantle cell lymphoma in adults. ACA is more potent and selective with fewer side effects compared to other Bruton tyrosine kinase inhibitors. In the current work a highly sensitive, selective and specific LC-MS/MS method for the estimation of acalabrutinib (ACA) in rat plasma was developed. Agilent Eclipse Plus C 8 column (50 mm × 4.6 mm, μm), with gradient elution using 10 mM ammonium formate and acetonitrile as mobile phase at a flow rate of 0.6 mL/min was used for the chromatographic separation. The ion transitions were quantified in positive mode with MRM transition of 466.1→372.3 for ACA and 236.8→194.0 for internal standard (IS). Solid phase extraction process was used as sample preparation approach. The method was validated according to USFDA bioanalytical guidelines. The method provided good linearity over the range of 0.2-199.14 ng/mL for ACA with short run time of 4 min. The method offers very high sensitivity (0.2 ng/mL) and was free from matrix interferences. The validated LC-MS/MS method was successfully applied for in vivo pharmacokinetic study in Sprague Dawley rats. The Cmax of ACA was found to be 25.56 ng/mL reaching at time of 0.5 h. The developed analytical method can also be utilized for bioequivalence studies and/or for pharmacokinetic studies in clinics.
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Affiliation(s)
- Shruti Surendran
- Drug Metabolism and Interactions Research Lab, Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, 500037, India
| | - David Paul
- Drug Metabolism and Interactions Research Lab, Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, 500037, India
| | - Sunil Pokharkar
- Drug Metabolism and Pharmacokinetic Department, Aurigene Discovery Technologies Limited, Bollaram Road, Miyapur, Hyderabad, 500049, Telangana, India
| | - Sagar Choulwar
- Drug Metabolism and Pharmacokinetic Department, Aurigene Discovery Technologies Limited, Bollaram Road, Miyapur, Hyderabad, 500049, Telangana, India
| | - Abhijeet Deshpande
- Drug Metabolism and Pharmacokinetic Department, Aurigene Discovery Technologies Limited, Bollaram Road, Miyapur, Hyderabad, 500049, Telangana, India
| | - Sanjeev Giri
- Drug Metabolism and Pharmacokinetic Department, Aurigene Discovery Technologies Limited, Bollaram Road, Miyapur, Hyderabad, 500049, Telangana, India.
| | - N Satheeshkumar
- Drug Metabolism and Interactions Research Lab, Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, 500037, India.
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Jian N, Qian L, Wang C, Li R, Xu Q, Li J. Novel nanofibers mat as an efficient, fast and reusable adsorbent for solid phase extraction of non-steroidal anti-inflammatory drugs in environmental water. J Hazard Mater 2019; 363:81-89. [PMID: 30308368 DOI: 10.1016/j.jhazmat.2018.09.052] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 08/17/2018] [Accepted: 09/20/2018] [Indexed: 05/17/2023]
Abstract
Core-shell polyaniline/polyacrylonitrile nanofibers mat (PANI/Pan NFsM) was prepared for extraction of hydrophilic non-steroidal anti-inflammatory drugs (NSAIDs) in environmental water. Superior adsorption and desorption performance of PANI/Pan NFsM was confirmed by both static and dynamic adsorption/desorption experiments. These properties proved PANI/Pan NFsM was a potentially efficient and fast solid phase extraction (SPE) adsorbent for NSAIDs. Under the optimized conditions, only 3 mg of PANI/Pan NFsM could easily extract eight target analytes in 10 mL of water sample without any pre-treatment, and the analytes retained on NFsM could be easily eluted by 500 μL of 1% acetic acid methanol for direct UPLC-MS/MS analysis. In addition, each piece of PANI/Pan NFsM could be reused for at least 20 times without performance decline. Possible adsorption mechanisms were also proposed. Practical feasibility was validated through the actual sample analysis.
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Affiliation(s)
- Ningge Jian
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Liangliang Qian
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Chunmin Wang
- Suzhou Municipal Center for Disease Prevention and Control, Suzhou 215004, China
| | - Ruixian Li
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Qian Xu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
| | - Jian Li
- Suzhou Municipal Center for Disease Prevention and Control, Suzhou 215004, China.
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Cui C, Chen R, Jiang J, Liu R, Wang W, Zhao Q, Hu P. Simultaneous determination of FLZ and its metabolite (M1) in human plasma and urine by UHPLC-MS/MS: Application to a pharmacokinetic study. J Pharm Biomed Anal 2019; 164:32-40. [PMID: 30342394 DOI: 10.1016/j.jpba.2018.10.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/08/2018] [Accepted: 10/09/2018] [Indexed: 11/19/2022]
Abstract
FLZ is a novel anti-Parkinson's disease candidate drug. The main active metabolite is FLZ O-dealkylation (M1) in preclinical studies. A reliable ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) quantitation method was developed for the simultaneous determination of FLZ and M1 with low limits of quantitation in human plasma (0.1 ng/mL) and urine (0.5 ng/mL). The plasma and urine samples were both purified by full-automatic solid phase extraction (SPE) method with ensured high extraction recovery and little matrix effect for both analytes, and then separated on a BEH C18 column (2.1 × 50 mm, 1.7 μm). Detection and quantification were performed using an electrospray ionization (ESI) source in positive mode by multiple reaction monitoring (MRM). The precursor to product ion transitions were monitored at m/z 450.3+→313.2+ for FLZ, m/z 436.3+→299.1+ for M1, m/z 462.6+→142.0+ for [D12]-FLZ (internal standard of FLZ) and m/z 447.2+→125.2+ for [D11]-M1 (internal standard of M1), respectively. This method showed good linearity, accuracy, precision and stability in the range of 0.1-100 ng/mL in plasma and 0.5-500 ng/mL in urine of two analytes. Finally, the developed method was successfully applied to a pharmacokinetic research in Chinese healthy volunteers after oral administration of FLZ tablets.
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Affiliation(s)
- Cheng Cui
- Clinical Pharmacology Research Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100032, PR China; Beijing Key Laboratory of Clinical PK and PD Investigation for Innovative Drugs, PR China
| | - Rui Chen
- Clinical Pharmacology Research Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100032, PR China; Beijing Key Laboratory of Clinical PK and PD Investigation for Innovative Drugs, PR China
| | - Ji Jiang
- Clinical Pharmacology Research Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100032, PR China; Beijing Key Laboratory of Clinical PK and PD Investigation for Innovative Drugs, PR China
| | - Rui Liu
- Hebei Yiling Pharmaceutical Co., Ltd., Hebei, 050035, PR China
| | - Wei Wang
- Hebei Yiling Pharmaceutical Co., Ltd., Hebei, 050035, PR China
| | - Qian Zhao
- Clinical Pharmacology Research Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100032, PR China; Beijing Key Laboratory of Clinical PK and PD Investigation for Innovative Drugs, PR China.
| | - Pei Hu
- Clinical Pharmacology Research Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100032, PR China; Beijing Key Laboratory of Clinical PK and PD Investigation for Innovative Drugs, PR China.
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Ma MQ, Zhang C, Chen TT, Yang J, Wang JJ, Ji J, Xu ZK. Bioinspired Polydopamine/Polyzwitterion Coatings for Underwater Anti-Oil and -Freezing Surfaces. Langmuir 2019; 35:1895-1901. [PMID: 30145900 DOI: 10.1021/acs.langmuir.8b02320] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Zwitterionic polymers are continually suggested as promising alternatives to tune the surface/interface properties of materials in many fields because of their unique molecular structures. Tremendous efforts have been devoted to immobilizing zwitterionic polymers (polyzwitterions, PZIs) on the material surfaces. However, these efforts usually suffer from cumbersome and time-consuming procedures. Herein we report a one-step strategy to facilely achieve the bioinspired polydopamine/polyzwitterion (PDA/PZI) coatings on various substrates. It requires only 30 min to form PDA/PZI coatings by mixing oxidant, dopamine, and zwitterionic monomers, including carboxybetaine methacrylate (CBMA), sulfobetaine methacrylate (SBMA), and 2-methacryloxyethyl phosphorylcholine (MPC). These bioinspired coatings display multifunctional properties such as underwater antioil-adhesion and antifreezing thanks to their high hydrophilicity and underwater superoleophobicity. The coatings even show the antiadhesion property for crude oil with high viscosity. Therefore, the PDA/PZI-coated meshes are efficient for separating both light oil and crude oil from oil/water mixtures. All these results demonstrate that the one-step strategy is a facile approach to design and exploit the bioinspired PDA/PZI coatings for diverse applications.
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Affiliation(s)
- Meng-Qi Ma
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, and Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
- Key Laboratory of Green Printing, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Chao Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, and Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
- Key Laboratory of Green Printing, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Ting-Ting Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, and Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
- Key Laboratory of Green Printing, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Jing Yang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, and Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
- Key Laboratory of Green Printing, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Jian-Jun Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, and Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
- Key Laboratory of Green Printing, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Jian Ji
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, and Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
- Key Laboratory of Green Printing, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Zhi-Kang Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, and Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
- Key Laboratory of Green Printing, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
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Casado N, Morante-Zarcero S, Pérez-Quintanilla D, Câmara JS, Sierra I. Dispersive Solid-Phase Extraction of Polyphenols from Juice and Smoothie Samples Using Hybrid Mesostructured Silica Followed by Ultra-high-Performance Liquid Chromatography-Ion-Trap Tandem Mass Spectrometry. J Agric Food Chem 2019; 67:955-967. [PMID: 30571103 DOI: 10.1021/acs.jafc.8b05578] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A wormhole-like mesostructured silica was synthesized and modified with octadecylsilane (C18) groups. The resulting hybrid material (HMS-C18) was characterized and evaluated as sorbent for simultaneous extraction of 20 polyphenols from mixed fruit-vegetable juices and smoothies by dispersive solid-phase extraction (dSPE). The samples were first subjected to solvent extraction followed by dSPE procedure. The extraction step was optimized and combined with a reversed-phase ultra-high-performance liquid chromatography method coupled to ion-trap tandem mass spectrometry (UHPLC-IT-MS/MS), which was also optimized. HMS-C18 showed high potential to extract and purify the target analytes, being more effective than commercial C18 amorphous silica. The proposed method was validated for both samples, obtaining average recoveries from 57% to 99% with relative standard deviations lower than 9%. Its applicability in the analysis of commercial mixed fruit-vegetable juices and smoothies revealed mainly contents of rutin, 4-hydroxybenzoic acid, chlorogenic acid, epicatechin, caffeic acid, and naringin in the samples analyzed.
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Affiliation(s)
- Natalia Casado
- Departamento de Tecnología Química y Ambiental, E.S.C.E.T , Universidad Rey Juan Carlos , C/Tulipán s/n , 28933 Móstoles , Madrid , Spain
| | - Sonia Morante-Zarcero
- Departamento de Tecnología Química y Ambiental, E.S.C.E.T , Universidad Rey Juan Carlos , C/Tulipán s/n , 28933 Móstoles , Madrid , Spain
| | - Damián Pérez-Quintanilla
- Departamento de Tecnología Química y Ambiental, E.S.C.E.T , Universidad Rey Juan Carlos , C/Tulipán s/n , 28933 Móstoles , Madrid , Spain
| | - José S Câmara
- CQM-Centro de Química da Madeira , Centro de Ciências Exactas e da Engenharia da Universidade da Madeira , Campus Universitário da Penteada, 9000-390 Funchal , Portugal
- Departamento de Química , Faculdade de Ciências e Engenharia da Universidade da Madeira , Campus Universitário da Penteada, 9000-390 Funchal , Portugal
| | - Isabel Sierra
- Departamento de Tecnología Química y Ambiental, E.S.C.E.T , Universidad Rey Juan Carlos , C/Tulipán s/n , 28933 Móstoles , Madrid , Spain
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Accioni F, Caballero-Casero N, García-Gómez D, Rubio S. Restricted Access Volatile Supramolecular Solvents for Single-Step Extraction/Cleanup of Benzimidazole Anthelmintic Drugs in Milk Prior to LC-MS/MS. J Agric Food Chem 2019; 67:520-530. [PMID: 30516988 DOI: 10.1021/acs.jafc.8b06003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, a restricted access volatile supramolecular solvent (RAM-VOL-SUPRAS) directly synthesized in milk is proposed for the first time for the simultaneous extraction and cleanup of benzimidazole anthelmintic drugs in milk meant for human consumption. The RAM-VOL-SUPRAS was formed by the self-assembly and coacervation of hexanol in tetrahydrofuran induced by the water content in milk. Benzimidazoles legislated by the European Union were quantitatively extracted (80-110%), and proteins were precipitated by the action of THF and the amphiphile; extraction of carbohydrates was avoided by a size exclusion mechanism, and lipids were removed during hexanol evaporation. The analytical methodology was fully validated according to Commission Decision 2002/657/EC. Method detection limits from 0.03 to 0.14 μg L-1 were well below the maximum residue limits legislated in milk for these drugs, with interday precisions at maximum residue levels below 13%. This novel methodology guarantees a rapid and reliable tool for daily and routine laboratory analyses in the field of food quality control.
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Affiliation(s)
- Francesca Accioni
- Department of Analytical Chemistry, Institute of Fine Chemistry and Nanochemistry , Universidad de Córdoba , Córdoba 14071 , Spain
- Department of Chemistry and Pharmacy , University of Sassari , 07100 Sassari SS , Italy
| | - Noelia Caballero-Casero
- Department of Analytical Chemistry, Institute of Fine Chemistry and Nanochemistry , Universidad de Córdoba , Córdoba 14071 , Spain
| | - Diego García-Gómez
- Department of Analytical Chemistry, Institute of Fine Chemistry and Nanochemistry , Universidad de Córdoba , Córdoba 14071 , Spain
| | - Soledad Rubio
- Department of Analytical Chemistry, Institute of Fine Chemistry and Nanochemistry , Universidad de Córdoba , Córdoba 14071 , Spain
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Abstract
Stable isotopes are powerful tools for tracing the metabolic fate of molecules in the human body. In this chapter, we focus on the use of deuterium (2H), a stable isotope of hydrogen, in the study of human lipid metabolism within the liver in vivo in humans and in vitro using hepatocyte cellular models. The measurement of de novo lipogenesis (DNL) will be focussed on, as the synthesis of fatty acids, specifically palmitate, has been gathering momentum as being implicated in cellular dysfunction, which may be involved in the development of non-alcoholic fatty liver disease (NAFLD). Therefore, this chapter focusses specifically on the use of 2H2O (heavy water) to measure hepatic DNL.
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Affiliation(s)
- Katherine E Pinnick
- Oxford Centre for Diabetes, Endocrinology and Metabolism, Churchill Hospital, University of Oxford, Oxford, UK.
| | - Pippa J Gunn
- Oxford Centre for Diabetes, Endocrinology and Metabolism, Churchill Hospital, University of Oxford, Oxford, UK
| | - Leanne Hodson
- Oxford Centre for Diabetes, Endocrinology and Metabolism, Churchill Hospital, University of Oxford, Oxford, UK.
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Campos CDM, Gamage SST, Jackson JM, Witek MA, Park DS, Murphy MC, Godwin AK, Soper SA. Microfluidic-based solid phase extraction of cell free DNA. Lab Chip 2018; 18:3459-3470. [PMID: 30339164 PMCID: PMC6391159 DOI: 10.1039/c8lc00716k] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Cell-free DNA (cfDNA) is a liquid biopsy marker that can carry signatures (i.e., mutations) associated with certain pathological conditions. Therefore, the extraction of cfDNA from a variety of clinical samples can be an effective and minimally invasive source of markers for disease detection and subsequent management. In the oncological diseases, circulating tumor DNA (ctDNA), a cfDNA sub-class, can carry clinically actionable mutations and coupled with next generation sequencing or other mutation detection methods provide a venue for effective in vitro diagnostics. However, cfDNA mutational analyses require high quality inputs. This necessitates extraction platforms that provide high recovery over the entire ctDNA size range (50 → 150 bp) with minimal interferences (i.e., co-extraction of genomic DNA), and high reproducibility with a simple workflow. Herein, we present a novel microfluidic solid-phase extraction device (μSPE) consisting of a plastic chip that is activated with UV/O3 to generate surface-confined carboxylic acid functionalities for the μSPE of cfDNA. The μSPE uses an immobilization buffer (IB) consisting of polyethylene glycol and salts that induce cfDNA condensation onto the activated plastic microfluidic surface. The μSPE consists of an array of micropillars to increase extraction bed load (scalable to loads >700 ng of cfDNA) and can be produced at low-cost using replication-based techniques. The entire μSPE can be fabricated in a single molding step negating the need for adding additional extraction supports to the device simplifying production and keeping device and assay cost low. The μSPE allowed for recoveries >90% of model cfDNA fragments across a range of sizes (100-700 bp) and even the ability to extract efficiently short cfDNA fragments (50 bp, >70%). In addition, the composition of the IB allowed for reducing the interference of co-extracted genomic DNA. We demonstrated the clinical utility of the μSPE by quantifying the levels of cfDNA in healthy donors and patients with non-small-cell lung and colorectal cancers. μSPE extracted cfDNA from plasma samples was also subjected to a ligase detection reaction (LDR) for determining the presence of mutations in the KRAS gene for colorectal and non-small cell lung cancer patients.
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Affiliation(s)
- Camila D. M. Campos
- Department of Chemistry, University of Kansas, Lawrence, KS, USA.
- Center of Biomodular Multi-scale Systems for Precision Medicine, USA
| | - Sachindra S. T. Gamage
- Department of Chemistry, University of Kansas, Lawrence, KS, USA.
- Center of Biomodular Multi-scale Systems for Precision Medicine, USA
| | - Joshua M. Jackson
- Department of Chemistry, University of Kansas, Lawrence, KS, USA.
- Center of Biomodular Multi-scale Systems for Precision Medicine, USA
| | - Malgorzata A. Witek
- Department of Chemistry, University of Kansas, Lawrence, KS, USA.
- Center of Biomodular Multi-scale Systems for Precision Medicine, USA
- Department of Biomedical Engineering, The University of North Carolina, Chapel Hill, NC 27599, USA
| | - Daniel S. Park
- Center of Biomodular Multi-scale Systems for Precision Medicine, USA
- Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA, USA
| | - Michael C. Murphy
- Center of Biomodular Multi-scale Systems for Precision Medicine, USA
- Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA, USA
| | - Andrew K. Godwin
- University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, KS, USA
| | - Steven A. Soper
- Department of Chemistry, University of Kansas, Lawrence, KS, USA.
- Center of Biomodular Multi-scale Systems for Precision Medicine, USA
- University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, KS, USA
- BioEngineering Program, The University of Kansas, Lawrence, KS 66047, USA
- Department of Mechanical Engineering, The University of Kansas, Lawrence, KS 66047, USA
- Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
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Nian Q, Ai L, Li D, Chen X, Zhang L, Wang M, Wang X. Rapid monitoring of plant growth regulators in bean sprouts via automated on-line polymeric monolith solid-phase extraction coupled with liquid chromatography tandem mass spectrometry. Anal Bioanal Chem 2018; 410:7239-7247. [PMID: 30151683 DOI: 10.1007/s00216-018-1334-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 08/15/2018] [Accepted: 08/17/2018] [Indexed: 12/17/2022]
Abstract
An automated on-line solid-phase extraction (SPE) following liquid chromatography tandem mass spectrometry was established for the fast determination of plant growth regulator residues in soybean sprout and mung bean sprout. The crude extracted specimens were directly purified on a poly (2-(dimethylamino) ethyl methacrylate-co-ethylene dimethacrylate) monolithic column which was well-defined as the on-line SPE adsorbent. Under the optimized conditions, the developed method gave the linear range of 0.3-50 ng/mL for gibberellin and 2,4-dichlorophenoxyacetic acid, 0.2-50 ng/mL for 4-chlorophenoxyacetic acid, and 0.5-50 ng/mL for 1-naphthaleneacetic acid (r ≥ 0.998). The detection limits (S/N = 3) ranged from 1.0 to 2.5 μg/kg and the recoveries for spiked soybean sprout samples were in the range of 75.0-93.3%. Besides, the total time for one analysis was 16 min. The reusability of the monolith was up to 600 extractions. The proposed process facilitated fully automated SPE and accurate determination in one step with rapidity, simplicity, and reliability. Graphical abstract ᅟ.
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Affiliation(s)
- Qixun Nian
- School of Public Health, North China University of Science and Technology, No. 21 Bohai Road, Caofeidian, Tangshan, 063210, Hebei, China
| | - Lianfeng Ai
- Hebei Entry-Exit Inspection and Quarantine Bureau, No. 318, Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Dongmei Li
- School of Public Health, North China University of Science and Technology, No. 21 Bohai Road, Caofeidian, Tangshan, 063210, Hebei, China
| | - Xuelei Chen
- School of Public Health, North China University of Science and Technology, No. 21 Bohai Road, Caofeidian, Tangshan, 063210, Hebei, China
| | - Lei Zhang
- School of Public Health, North China University of Science and Technology, No. 21 Bohai Road, Caofeidian, Tangshan, 063210, Hebei, China
| | - Manman Wang
- School of Public Health, North China University of Science and Technology, No. 21 Bohai Road, Caofeidian, Tangshan, 063210, Hebei, China.
| | - Xuesheng Wang
- School of Public Health, North China University of Science and Technology, No. 21 Bohai Road, Caofeidian, Tangshan, 063210, Hebei, China
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36
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Zhang H, Wu X, Yuan Y, Han D, Qiao F, Yan H. An ionic liquid functionalized graphene adsorbent with multiple adsorption mechanisms for pipette-tip solid-phase extraction of auxins in soybean sprouts. Food Chem 2018; 265:290-297. [PMID: 29884385 DOI: 10.1016/j.foodchem.2018.05.090] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 05/01/2018] [Accepted: 05/21/2018] [Indexed: 12/24/2022]
Abstract
A new ionic liquid functionalized graphene-pipette-tip solid-phase extraction method coupled with high-performance liquid chromatography was established for the simultaneous extraction and determination of three auxins in soybean sprouts. The graphene adsorbent, with multiple adsorption mechanisms, was first synthesized by functional modification of pentafluorobenzyl imidazolium bromide ionic liquid through thiol-ene click chemistry. The ionic liquid was applied to prevent the aggregation of graphene; it also imbued graphene with the ability for π-π interactions, ionic exchange, electrostatic interactions, as well as hydrogen bonding (which is stronger than the interaction between water and analytes), by augmenting the adsorption mechanisms between the adsorbent and analytes. Under optimized conditions, linearity was achieved in the ranges 0.03-5.00 µg/g for indole-3-acetic acid and 1-naphthaleneacetic acid and 0.09-5.00 µg/g for 2,4-dichlorophenoxyacetic acid, with a detection limit of 0.004-0.026 µg/g; this adsorbent has been successfully applied for the determination of auxins in soybean sprouts.
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Affiliation(s)
- Hua Zhang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Public Health, Hebei University, Baoding 071002, China
| | - Xingqiang Wu
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Public Health, Hebei University, Baoding 071002, China
| | - Yanan Yuan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Public Health, Hebei University, Baoding 071002, China
| | - Dandan Han
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Public Health, Hebei University, Baoding 071002, China.
| | - Fengxia Qiao
- Department of Biochemistry, Baoding University, Baoding 071000, China
| | - Hongyuan Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Public Health, Hebei University, Baoding 071002, China.
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37
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Su M, Jia L, Wu X, Sun H. Residue investigation of some phenylureas and tebuthiuron herbicides in vegetables by ultra-performance liquid chromatography coupled with integrated selective accelerated solvent extraction-clean up in situ. J Sci Food Agric 2018; 98:4845-4853. [PMID: 29574757 DOI: 10.1002/jsfa.9014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 11/10/2017] [Accepted: 03/14/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Some trace amounts of urea herbicide residues can be transferred to humans via the food chain, thereby being potentially harmful to human health. The development of a robust analytical methodology for effective sample preparation and simultaneous determination of herbicide residues in vegetable samples is required for achieving food safety. RESULTS The diuron-molecularly imprinted polymers (MIPs) synthesized have excellent affinity and high selectivity to phenylureas (monolinuron, isoproturon, diuron and linuron) and tebuthiuron. A novel automated procedure with better selectivity for vegetable sample treatment was developed by integrated matrix solid-phase dispersion-accelerated solvent extraction clean-up in situ. Five herbicides can be baseline separated with runtime down to 5 min by ultra-performance liquid chromatography, and good linearity was obtained with a correlation coefficient (r) of 0.9999. The limit of quantification of the method was in the range of 0.8-2.3 µg kg-1 . Diuron residue in cherry tomato sample was found to be 40 µg kg-1 . CONCLUSION The developed method has satisfactory selectivity, good linearity, high sensitivity and accuracy as well as speediness, and can ensure rapid selective extraction and sensitive multi-residue analysis at low microgram per kilogram levels of the herbicides in vegetable food. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Ming Su
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding, China
| | - Licong Jia
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding, China
- Hebei Medical University, Shijiazhuang, China
| | - Xingqiang Wu
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding, China
| | - Hanwen Sun
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding, China
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Abstract
Polymeric sorbents are frequently used in wine, either as solid phase extraction materials for isolation of analytes or as sorptive materials for removal of undesirable compounds (amelioration). Six new polymeric sorbents were produced thermally or in a microwave from various ratios of methacrylic acid, acrylic acid, and 4-vinylbenzoic acid as hydrophilic monomers, together with ethylene glycol dimethacrylate as cross-linker, using different porogen solvents. The relationship between physicochemical properties (pore size, surface area, and polarity) of the sorbents and their sorption properties for compounds in wine was investigated and compared to four commercially available sorbents. With some similarities to their commercial counterparts depending on hydrophobic and hydrophilic characteristics, the six new sorbents showed specificity toward different groups of compounds (e.g., volatiles and phenolics) and could be applied for targeted purposes. The results provide insight into the selection and utilization of new polymeric materials for extraction of components from wine.
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Affiliation(s)
- Chen Liang
- The Australian Research Council Training Centre for Innovative Wine Production and Department of Wine and Food Science , The University of Adelaide , Waite Campus, PMB 1, Glen Osmond , SA 5064 , Australia
| | - Paul K Boss
- CSIRO Agriculture and Food , PMB 2, Glen Osmond , SA 5064 , Australia
| | - David W Jeffery
- The Australian Research Council Training Centre for Innovative Wine Production and Department of Wine and Food Science , The University of Adelaide , Waite Campus, PMB 1, Glen Osmond , SA 5064 , Australia
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Lian Z, Wang J. Selective detection of chloramphenicol based on molecularly imprinted solid-phase extraction in seawater from Jiaozhou Bay, China. Mar Pollut Bull 2018; 133:750-755. [PMID: 30041372 DOI: 10.1016/j.marpolbul.2018.06.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 06/12/2018] [Accepted: 06/14/2018] [Indexed: 05/10/2023]
Abstract
This study highlights an efficient sample pre-treatment method for preconcentration and detection of chloramphenicol in marine water using molecularly imprinted solid-phase extraction (MISPE). Chloramphenicol molecularly imprinted microspheres were prepared and evaluated on the base of morphology, capacity and selectivity. The imprinted microspheres exhibited specific recognition and high retention capability to chloramphenicol and were applied as special solid-phase extraction adsorbents. An off-line MISPE protocol has been optimized and a creative analytical method coupled to HPLC-DAD was successfully developed for the cleanup and determination of chloramphenicol in seawater samples. Method performance was satisfactory with recoveries ranging from 81 to 90% and relative standard deviation (RSD) was <4.93% (n = 3). Accuracy of the method was assessed at three spiking concentration levels and the limit of detection was 5 ng L-1. Finally, five seawater samples from Jiaozhou Bay of China were determined and the results showed that there was no chloramphenicol detected.
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Affiliation(s)
- Ziru Lian
- Marine College, Shandong University, Weihai 264209, China.
| | - Jiangtao Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
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Bae SY, Winemiller MD. Trace Level Analysis of Sarin and VX in Food Using Normal Phase Silica Gel and Ultra-Performance Liquid Chromatography-Time-of-Flight Mass Spectrometry (UPLC-TOF-MS). J Agric Food Chem 2018; 66:7846-7856. [PMID: 29920090 DOI: 10.1021/acs.jafc.8b01756] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ultra-Performance Liquid Chromatography/electrospray ionization mass spectrometry was used for the trace level determination of isopropyl methylphosphonofluoridate (Sarin, GB) and ( O-ethyl S-[2-(diisopropylamino)ethyl] methylphosphonothioate (VX) after extraction from various foods. A method utilizing normal phase silica gel was developed for the sample preparation and extraction of VX and GB from food. The extraction efficiencies of the normal phase silica gel method for VX was compared to those of other commercial solid phase extraction media and was found to be comparable. Sarin was found to be incompatible with both the mixed mode cation exchange (MCX) sorbents and QuEChERS methods that are commercially available but was successful with the normal phase silica gel method. The linear range of quantitation for VX was 0.1-330 ng/mL and for GB was 20-1200 ng/mL. The average recoveries of VX and GB from the various food matrices along with the corresponding relative standard deviations (RSDs) are reported.
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Affiliation(s)
- Sue Y Bae
- Research and Technology Directorate , U.S. Army, Edgewood Chemical Biological Center (ECBC), Aberdeen Proving Ground , Maryland 21010-5424 , United States
| | - Mark D Winemiller
- Research and Technology Directorate , U.S. Army, Edgewood Chemical Biological Center (ECBC), Aberdeen Proving Ground , Maryland 21010-5424 , United States
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Ochiai N, Sasamoto K, David F, Sandra P. Recent Developments of Stir Bar Sorptive Extraction for Food Applications: Extension to Polar Solutes. J Agric Food Chem 2018; 66:7249-7255. [PMID: 29938507 DOI: 10.1021/acs.jafc.8b02182] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Stir bar sorptive extraction (SBSE) is a miniaturized and solvent-less sample preparation method for extraction and concentration of organic compounds from aqueous samples. The method is based on sorptive extraction, whereby the solutes are extracted into a polymer, such as polydimethylsiloxane (PDMS), coated on a stir bar. Using an apolar PDMS coating, SBSE provides high recoveries for apolar solutes; however, SBSE recoveries for polar solutes are low. Although several more polar coatings for SBSE were developed, these extraction phases are mostly not compatible with thermal desorption (TD) and/or have inferior performance characteristics related to robustness, bleeding, stability, etc. compared to PDMS. In this perspective, two recently introduced SBSE approaches are described that can be used to extend the applicability of a PDMS coating to more polar solutes: (1) SBSE with freeze concentration [ice concentration linked with extractive stirrer (ICECLES)], which is based on the concentration of analytes by gradually reducing the phase ratio (sample/extraction phase), and (2) SBSE using a solvent-swollen PDMS [solvent-assisted SBSE (SA-SBSE)], which is based on a combination of polarity modification and volume increase by PDMS phase swelling using certain types of solvents while maintaining the original characteristics of the PDMS phase.
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Affiliation(s)
- Nobuo Ochiai
- GERSTEL K.K. 1-3-1 Nakane , Meguro-ku, Tokyo 152-0031 Japan
| | - Kikuo Sasamoto
- GERSTEL K.K. 1-3-1 Nakane , Meguro-ku, Tokyo 152-0031 Japan
| | - Frank David
- Research Institute for Chromatography , President Kennedypark 26 , 8500 Kortrijk , Belgium
| | - Pat Sandra
- Research Institute for Chromatography , President Kennedypark 26 , 8500 Kortrijk , Belgium
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42
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Song X, Zhou T, Li J, Zhang M, Xie J, He L. Determination of Ten Macrolide Drugs in Environmental Water Using Molecularly Imprinted Solid-Phase Extraction Coupled with Liquid Chromatography-Tandem Mass Spectrometry. Molecules 2018; 23:molecules23051172. [PMID: 29757980 PMCID: PMC6100474 DOI: 10.3390/molecules23051172] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Revised: 05/08/2018] [Accepted: 05/11/2018] [Indexed: 12/04/2022] Open
Abstract
With the extensive application of antibiotics in livestock, their contamination of the aquatic environment has received more attention. Molecularly imprinted polymer (MIP), as an eco-friendly and durable solid-phase extraction material, has shown great potential for the separation and enrichment of antibiotics in water. This study aims at developing a practical and economical method based on molecularly imprinted solid phase extraction (MISPE) combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) for simultaneously detecting ten macrolide drugs in different sources of water samples. The MIP was synthesized by bulk polymerization using tylosin as the template and methacrylic acid as the functional monomer. The MIP exhibited a favorable load-bearing capacity for water (>90 mL), which is more than triple that of non-molecularly imprinted polymers (NIP). The mean recoveries of macrolides at four spiked concentration levels (limit of quantification, 40, 100, and 400 ng/L) were 62.6–100.9%, with intra-day and inter-day relative standard deviations below 12.6%. The limit of detection and limit of quantification were 1.0–15.0 ng/L and 3.0–40.0 ng/L, respectively. Finally, the proposed method was successfully applied to the analysis of real water samples.
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Affiliation(s)
- Xuqin Song
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Tong Zhou
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, South China Agricultural University, Guangzhou 510642, China.
| | - Jiufeng Li
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Meiyu Zhang
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Jingmeng Xie
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, South China Agricultural University, Guangzhou 510642, China.
| | - Limin He
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, South China Agricultural University, Guangzhou 510642, China.
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43
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Li N, Wu D, Hu N, Fan G, Li X, Sun J, Chen X, Suo Y, Li G, Wu Y. Effective Enrichment and Detection of Trace Polycyclic Aromatic Hydrocarbons in Food Samples based on Magnetic Covalent Organic Framework Hybrid Microspheres. J Agric Food Chem 2018; 66:3572-3580. [PMID: 29554797 DOI: 10.1021/acs.jafc.8b00869] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The present study reported a facile, sensitive, and efficient method for enrichment and determination of trace polycyclic aromatic hydrocarbons (PAHs) in food samples by employing new core-shell nanostructure magnetic covalent organic framework hybrid microspheres (Fe3O4@COF-(TpBD)) as the sorbent followed by HPLC-DAD. Under mild synthetic conditions, the Fe3O4@COF-(TpBD) were prepared with the retention of colloidal nanosize, larger specific surface area, higher porosity, uniform morphology, and supermagnetism. The as-prepared materials showed an excellent adsorption ability for PAHs, and the enrichment efficiency of the Fe3O4@COF-(TpBD) could reach 99.95%. The obtained materials also had fast adsorption kinetics and realized adsorption equilibrium within 12 min. The eluent was further analyzed by HPLC-DAD, and good linearity was observed in the range of 1-100 ng/mL with the linear correlation being above 0.9990. The limits of detection (S/N = 3) and limits of quantitation (S/N = 10) for 15 PAHs were in the range of 0.83-11.7 ng/L and 2.76-39.0 ng/L, respectively. For the application, the obtained materials were employed for the enrichment of trace PAHs in food samples and exhibited superior enrichment capacity and excellent applicability.
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Affiliation(s)
- Ning Li
- School of Food and Biological Engineering , Shaanxi University of Science and Technology , Xi'an 710021 , China
- Key Laboratory of Life-Organic Analysis of Shandong Province , Qufu Normal University , Qufu 273165 , China
| | - Di Wu
- Yangtze Delta Region Institute of Tsinghua University , Zhejiang 314006 , China
| | - Na Hu
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology , Chinese Academy of Sciences , Xining 810001 , China
| | - Guangsen Fan
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing 100048 , China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing 100048 , China
| | - Jing Sun
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology , Chinese Academy of Sciences , Xining 810001 , China
| | - Xuefeng Chen
- School of Food and Biological Engineering , Shaanxi University of Science and Technology , Xi'an 710021 , China
| | - Yourui Suo
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology , Chinese Academy of Sciences , Xining 810001 , China
| | - Guoliang Li
- School of Food and Biological Engineering , Shaanxi University of Science and Technology , Xi'an 710021 , China
- Key Laboratory of Life-Organic Analysis of Shandong Province , Qufu Normal University , Qufu 273165 , China
- Key Laboratories of Chemical Safety and Health , China National Center for Food Safety Risk Assessment , Beijing 100050 , China
| | - Yongning Wu
- Key Laboratories of Chemical Safety and Health , China National Center for Food Safety Risk Assessment , Beijing 100050 , China
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44
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He C, Lay S, Yu H, Shen S. Synthesis and application of selective adsorbent for pirimicarb pesticides in aqueous media using allyl-β-cyclodextrin based binary functional monomers. J Sci Food Agric 2018; 98:2089-2097. [PMID: 28941229 DOI: 10.1002/jsfa.8690] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Binary functional monomers, allyl-β-cyclodextrin (allyl-β-CD) and methacrylic acid (MAA) or allyl-β-CD and acrylonitrile (AN), were exploited in a fabrication of molecularly imprinted polymers (MIPs) for selective recognition and large enrichment of pirimicarb from aqueous media. RESULTS Special attention was paid to the computational simulation of the imprinting molecular and functional monomers. The morphological characteristics of MIPs made of allyl-β-CD and MAA (M-MAA) were characterised by scanning electron microscopy. The effect of binding capacity of MAA-linked allyl-β-CD MIPs (M-MAA) demonstrated higher efficiency than that of AN-linked allyl-β-CD MIPs (M-AN) when tested in binding specificity. Finally, M-MAA was chosen to run through molecularly imprinted solid-phase extraction (MISPE) to analyse the spiked fresh leafy vegetables of pirimicarb. CONCLUSION The present proposed technique is a promising tool for the preparation of the receptors which could recognise pirimicarb pesticide in aqueous media. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Chengzijing He
- Department of Food Science & Nutrition, Zhejiang University, Hangzhou, China
| | - Sovichea Lay
- Department of Food Science & Nutrition, Zhejiang University, Hangzhou, China
- Department of Agronomy, University of Heng Samrin Thbong Khmum, Thboung Khmum, Cambodia
| | - Haining Yu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Shengrong Shen
- Department of Food Science & Nutrition, Zhejiang University, Hangzhou, China
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45
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Miles CO, Kilcoyne J, McCarron P, Giddings SD, Waaler T, Rundberget T, Samdal IA, Løvberg KE. Selective Extraction and Purification of Azaspiracids from Blue Mussels ( Mytilus edulis) Using Boric Acid Gel. J Agric Food Chem 2018; 66:2962-2969. [PMID: 29502403 DOI: 10.1021/acs.jafc.8b00346] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Azaspiracids belong to a family of more than 50 polyether toxins originating from marine dinoflagellates such as Azadinium spinosum. All of the azaspiracids reported thus far contain a 21,22-dihydroxy group. Boric acid gel can bind selectively to compounds containing vic-diols or α-hydroxycarboxylic acids via formation of reversible boronate complexes. Here we report use of the gel to selectively capture and release azaspiracids from extracts of blue mussels. Analysis of the extracts and fractions by liquid chromatography-tandem mass spectrometry (LC-MS) showed that this procedure resulted in an excellent cleanup of the azaspiracids in the extract. Analysis by enzyme-linked immunoasorbent assay (ELISA) and LC-MS indicated that most azaspiracid analogues were recovered in good yield by this procedure. The capacity of boric acid gel for azaspiracids was at least 50 μg/g, making this procedure suitable for use in the early stages of preparative purification of azaspiracids. In addition to its potential for concentration of dilute samples, the extensive cleanup provided by boric acid gel fractionation of azaspiracids in mussel samples almost eliminated matrix effects during subsequent LC-MS and could be expected to reduce matrix effects during ELISA analysis. The method may therefore prove useful for quantitative analysis of azaspiracids as part of monitoring programs. Although LC-MS data showed that okadaic acid analogues also bound to the gel, this was much less efficient than for azaspiracids under the conditions used. The boric acid gel methodology is potentially applicable to other important groups of natural toxins containing diols including ciguatoxins, palytoxins, pectenotoxins, tetrodotoxin, trichothecenes, and toxin glycosides.
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Affiliation(s)
- Christopher O Miles
- Norwegian Veterinary Institute, P.O. Box 750 Sentrum , N-0106 Oslo , Norway
- Measurement Science and Standards , National Research Council , 1411 Oxford Street , Halifax , Nova Scotia B3H 3Z1 , Canada
| | - Jane Kilcoyne
- Marine Institute, Rinville, Oranmore, Co., Galway H91 R673 , Ireland
| | - Pearse McCarron
- Measurement Science and Standards , National Research Council , 1411 Oxford Street , Halifax , Nova Scotia B3H 3Z1 , Canada
| | - Sabrina D Giddings
- Measurement Science and Standards , National Research Council , 1411 Oxford Street , Halifax , Nova Scotia B3H 3Z1 , Canada
| | - Thor Waaler
- Norwegian Veterinary Institute, P.O. Box 750 Sentrum , N-0106 Oslo , Norway
| | - Thomas Rundberget
- Norwegian Veterinary Institute, P.O. Box 750 Sentrum , N-0106 Oslo , Norway
- Norwegian Institute for Water Research , N-0349 Oslo , Norway
| | - Ingunn A Samdal
- Norwegian Veterinary Institute, P.O. Box 750 Sentrum , N-0106 Oslo , Norway
| | - Kjersti E Løvberg
- Norwegian Veterinary Institute, P.O. Box 750 Sentrum , N-0106 Oslo , Norway
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46
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Wang X, Garcia CT, Gong G, Wishnok JS, Tannenbaum SR. Automated Online Solid-Phase Derivatization for Sensitive Quantification of Endogenous S-Nitrosoglutathione and Rapid Capture of Other Low-Molecular-Mass S-Nitrosothiols. Anal Chem 2018; 90:1967-1975. [PMID: 29271637 PMCID: PMC5892179 DOI: 10.1021/acs.analchem.7b04049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
S-Nitrosothiols (RSNOs) constitute a circulating endogenous reservoir of nitric oxide and have important biological activities. In this study, an online coupling of solid-phase derivatization (SPD) with liquid chromatography-mass spectrometry (LC-MS) was developed and applied in the analysis of low-molecular-mass RSNOs. A derivatizing-reagent-modified polymer monolithic column was prepared and adapted for online SPD-LC-MS. Analytes from the LC autosampler flowed through the monolithic column for derivatization and then directly into the LC-MS for analysis. This integration of the online derivatization, LC separation, and MS detection facilitated system automation, allowing rapid, laborsaving, and sensitive detection of RSNOs. S-Nitrosoglutathione (GSNO) was quantified using this automated online method with good linearity (R2 = 0.9994); the limit of detection was 0.015 nM. The online SPD-LC-MS method has been used to determine GSNO levels in mouse samples, 138 ± 13.2 nM of endogenous GSNO was detected in mouse plasma. Besides, the GSNO concentrations in liver (64.8 ± 11.3 pmol/mg protein), kidney (47.2 ± 6.1 pmol/mg protein), heart (8.9 ± 1.8 pmol/mg protein), muscle (1.9 ± 0.3 pmol/mg protein), hippocampus (5.3 ± 0.9 pmol/mg protein), striatum (6.7 ± 0.6 pmol/mg protein), cerebellum (31.4 ± 6.5 pmol/mg protein), and cortex (47.9 ± 4.6 pmol/mg protein) were also successfully quantified. When the derivatization was performed within 8 min, followed by LC-MS detection, samples could be rapidly analyzed compared with the offline manual method. Other low-molecular-mass RSNOs, such as S-nitrosocysteine and S-nitrosocysteinylglycine, were captured by rapid precursor-ion scanning, showing that the proposed method is a potentially powerful tool for capture, identification, and quantification of RSNOs in biological samples.
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Affiliation(s)
- Xin Wang
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Carlos T. Garcia
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Guanyu Gong
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - John S. Wishnok
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Steven R. Tannenbaum
- Department of Biological Engineering Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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47
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Zhang YZ, Zhang JW, Wang CZ, Zhou LD, Zhang QH, Yuan CS. Polydopamine-Coated Magnetic Molecularly Imprinted Polymers with Fragment Template for Identification of Pulsatilla Saponin Metabolites in Rat Feces with UPLC-Q-TOF-MS. J Agric Food Chem 2018; 66:653-660. [PMID: 29260546 DOI: 10.1021/acs.jafc.7b05747] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, a modified pretreatment method using magnetic molecularly imprinted polymers (MMIPs) was successfully applied to study the metabolites of an important botanical with ultraperformance liquid chromatography/quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS). The MMIPs for glucoside-specific adsorption was used to identify metabolites of Pulsatilla chinensis in rat feces. Polymers were prepared by using Fe3O4 nanoparticles as the supporting matrix, d-glucose as fragment template, and dopamine as the functional monomer and cross-linker. Results showed that MMIPs exhibited excellent extraction performance, large adsorption capacity (5.65 mg/g), fast kinetics (60 min), and magnetic separation. Furthermore, the MMIPs coupled with UPLC-Q-TOF-MS were successfully utilized for the identification of 17 compounds including 15 metabolites from the Pulsatilla saponin metabolic pool. This study provides a reliable protocol for the separation and identification of saponin metabolites in a complex biological sample, including those from herbal medicines.
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Affiliation(s)
- Yu-Zhen Zhang
- School of Chemistry and Chemical Engineering, Chongqing University , Chongqing 400044, China
| | - Jia-Wei Zhang
- School of Chemistry and Chemical Engineering, Chongqing University , Chongqing 400044, China
| | - Chong-Zhi Wang
- Tang Center for Herbal Medicine Research and Department of Anesthesia & Critical Care, University of Chicago , Chicago, Illinois 60637, United States
| | - Lian-Di Zhou
- Basic Medical College, Chongqing Medical University , Chongqing 400016, China
| | - Qi-Hui Zhang
- School of Chemistry and Chemical Engineering, Chongqing University , Chongqing 400044, China
- Tang Center for Herbal Medicine Research and Department of Anesthesia & Critical Care, University of Chicago , Chicago, Illinois 60637, United States
| | - Chun-Su Yuan
- Tang Center for Herbal Medicine Research and Department of Anesthesia & Critical Care, University of Chicago , Chicago, Illinois 60637, United States
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Abstract
To enable inexpensive molecular detection at the point-of-care and at home with minimal or no instrumentation, it is necessary to streamline unit operations and store reagents refrigeration-free. To address this need, a multifunctional enzymatic amplification reactor that combines solid-phase nucleic acid extraction, concentration, and purification; refrigeration-free storage of reagents with just-in-time release; and enzymatic amplification is designed, prototyped, and tested. A nucleic acid isolation membrane is placed at the reactor's inlet, and paraffin-encapsulated reagents are prestored within the reactor. When a sample mixed with chaotropic agents is filtered through the nucleic acid isolation membrane, the membrane binds nucleic acids from the sample. Importantly, the sample volume is decoupled from the reaction volume, enabling the use of relatively large sample volumes for high sensitivity. When the amplification reactor's temperature increases to its operating level, the paraffin encapsulating the reagents melts and moves out of the way. The reagents are hydrated, just-in-time, and the polymerase reaction proceeds. The amplification process can be monitored, in real-time. We demonstrate our reactors' ability to amplify both DNA and RNA targets using polymerase with both reverse-transcriptase and strand displacement activities to obtain sensitivities on-par with benchtop equipment and a shelf life exceeding 6 months.
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Affiliation(s)
- Jinzhao Song
- Department of Mechanical Engineering and Applied Mechanics, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Changchun Liu
- Department of Mechanical Engineering and Applied Mechanics, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Michael G. Mauk
- Department of Mechanical Engineering and Applied Mechanics, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jing Peng
- Department of Mechanical Engineering and Applied Mechanics, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | | | - Haim H. Bau
- Department of Mechanical Engineering and Applied Mechanics, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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49
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Välitalo P, Massei R, Heiskanen I, Behnisch P, Brack W, Tindall AJ, Du Pasquier D, Küster E, Mikola A, Schulze T, Sillanpää M. Effect-based assessment of toxicity removal during wastewater treatment. Water Res 2017; 126:153-163. [PMID: 28941401 DOI: 10.1016/j.watres.2017.09.014] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 08/24/2017] [Accepted: 09/04/2017] [Indexed: 06/07/2023]
Abstract
Wastewaters contain complex mixtures of chemicals, which can cause adverse toxic effects in the receiving environment. In the present study, the toxicity removal during wastewater treatment at seven municipal wastewater treatment plants (WWTPs) was investigated using an effect-based approach. A battery of eight bioassays was applied comprising of cytotoxicity, genotoxicity, endocrine disruption and fish embryo toxicity assays. Human cell-based CALUX assays, transgenic larval models and the fish embryo toxicity test were particularly sensitive to WWTP effluents. The results indicate that most effects were significantly reduced or completely removed during wastewater treatment (76-100%), while embryo toxicity, estrogenic activity and thyroid disruption were still detectable in the effluents suggesting that some harmful substances remain after treatment. The responsiveness of the bioassays was compared and the human cell-based CALUX assays showed highest responsiveness in the samples. Additionally, the fish embryo toxicity test and the transgenic larval models for endocrine disrupting effects showed high responsiveness at low sample concentrations in nearly all of the effluent samples. The results showed a similar effect pattern among all WWTPs investigated, indicating that the wastewater composition could be rather similar at different locations. There were no considerable differences in the toxicity removal efficiencies of the treatment plants and no correlation was observed with WWTP characteristics, such as process configuration or sludge age. This study demonstrated that a biotest battery comprising of multiple endpoints can serve as a powerful tool when assessing water quality or water treatment efficiency in a holistic manner. Rather than analyzing the concentrations of a few selected chemicals, bioassays can be used to complement traditional methods of monitoring in the future by assessing sum-parameter based effects, such as mixture effects, and tackling chemicals that are present at concentrations below chemical analytical detection limits.
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Affiliation(s)
- Pia Välitalo
- Finnish Environment Institute, Laboratory Centre, Hakuninmaantie 6, 00430, Helsinki, Finland; Aalto University, Department of Civil and Environmental Engineering, Tietotie 1E, 02150, Espoo, Finland.
| | - Riccardo Massei
- UFZ - Helmholtz Centre for Environmental Research GmbH, Leipzig, Germany; Institute for Environmental Research (Biology V), RWTH Aachen University, Aachen, Germany
| | - Ilse Heiskanen
- Finnish Environment Institute, Laboratory Centre, Hakuninmaantie 6, 00430, Helsinki, Finland
| | | | - Werner Brack
- UFZ - Helmholtz Centre for Environmental Research GmbH, Leipzig, Germany; Institute for Environmental Research (Biology V), RWTH Aachen University, Aachen, Germany
| | | | | | - Eberhard Küster
- UFZ - Helmholtz Centre for Environmental Research GmbH, Leipzig, Germany
| | - Anna Mikola
- Aalto University, Department of Civil and Environmental Engineering, Tietotie 1E, 02150, Espoo, Finland
| | - Tobias Schulze
- UFZ - Helmholtz Centre for Environmental Research GmbH, Leipzig, Germany
| | - Markus Sillanpää
- Finnish Environment Institute, Laboratory Centre, Hakuninmaantie 6, 00430, Helsinki, Finland
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50
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Serra M, Ferraro D, Pereiro I, Viovy JL, Descroix S. The power of solid supports in multiphase and droplet-based microfluidics: towards clinical applications. Lab Chip 2017; 17:3979-3999. [PMID: 28948991 DOI: 10.1039/c7lc00582b] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Multiphase and droplet microfluidic systems are growing in relevance in bioanalytical-related fields, especially due to the increased sensitivity, faster reaction times and lower sample/reagent consumption of many of its derived bioassays. Often applied to homogeneous (liquid/liquid) reactions, innovative strategies for the implementation of heterogeneous (typically solid/liquid) processes have recently been proposed. These involve, for example, the extraction and purification of target analytes from complex matrices or the implementation of multi-step protocols requiring efficient washing steps. To achieve this, solid supports such as functionalized particles (micro or nanometric) presenting different physical properties (e.g. magnetic, optical or others) are used for the binding of specific entities. The manipulation of such supports with different microfluidic principles has both led to the miniaturization of existing biomedical protocols and the development of completely new strategies for diagnostics and research. In this review, multiphase and droplet-based microfluidic systems using solid suspensions are presented and discussed with a particular focus on: i) working principles and technological developments of the manipulation strategies and ii) applications, critically discussing the level of maturity of these systems, which can range from initial proofs of concept to real clinical validations.
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Affiliation(s)
- M Serra
- Laboratoire Physico Chimie Curie, Institut Curie, PSL Research University, CNRS UMR168, Paris, France.
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