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Zhang C, Wang H, Li J, Sun H, Liu H. Improving and controlling the drug loading capacity of seven quinolones in minced fish matrix based on microfluidics. Int J Biol Macromol 2024; 267:131188. [PMID: 38599434 DOI: 10.1016/j.ijbiomac.2024.131188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 03/19/2024] [Accepted: 03/26/2024] [Indexed: 04/12/2024]
Abstract
Traditional spiking methods for preparing matrix reference material of aquatic products is difficult to control the drug content in the matrix, especially one matrix containing multiple drugs. Minced fish is commonly used for the preparation of matrix reference materials in aquatic products, which is a relatively complex matrix with stickiness and difficult handling. Drug loading capacity is a key factor affecting the effectiveness of matrix reference materials. Here, we proposed a new spiking approach to improve the drug loading capacity of seven quinolones based on microfluidics, simultaneously. Fresh grass carp tissue underwent grinding, fine filtration, centrifugation and reconstituted in distilled water to form a liquid sample, which was subsequently mixed with a sodium alginate solution (1 %) at a ratio of 1:1.2. The mixed solution was supplemented with seven quinolones of equal concentration, followed by the preparation of uniform fish gel microspheres using microfluidic technology. The results indicated that the recoveries of seven quinolones ranged from 82.54 % to 114.17 %, demonstrating a significant improvement in the drug loading capacity of these quinolones compared to traditional methods. Moreover, the drug concentration in the matrix can be precisely controlled. A strong linear relationship was observed between the concentration of seven quinolones in the matrix and its initial concentration, which could serve as a reference for the development of other matrix reference materials.
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Affiliation(s)
- Chaoying Zhang
- Department of Quality and Safety, Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing 100141, PR China
| | - Huijiao Wang
- Department of Quality and Safety, Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing 100141, PR China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, PR China
| | - Jincheng Li
- Department of Quality and Safety, Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing 100141, PR China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, PR China
| | - Huiwu Sun
- Department of Quality and Safety, Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing 100141, PR China
| | - Huan Liu
- Department of Quality and Safety, Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing 100141, PR China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, PR China.
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2
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Craig A, Moodie LWK, Hawkes JA. Preparation of Simple Bicyclic Carboxylate-Rich Alicyclic Molecules for the Investigation of Dissolved Organic Matter. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:7078-7086. [PMID: 38608252 PMCID: PMC11044592 DOI: 10.1021/acs.est.4c00166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 04/03/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024]
Abstract
Dissolved organic matter (DOM) is a vast and complex chemical mixture that plays a key role in the mediation of the global carbon cycle. Fundamental understanding of the source and fate of oceanic organic matter is obscured due to poor definition of the key molecular contributors to DOM, which limits accurate sample analysis and prediction of the Earth's carbon cycle. Previous work has attempted to define the components of the DOM through a variety of chromatographic and spectral techniques. However, modern preparative and analytical methods have not isolated or unambiguously identified molecules from DOM. Therefore, previously proposed structures are based solely on the mixture's aggregate properties and do not accurately describe any true individual molecular component. In addition to this, there is a lack of appropriate analogues of the individual chemical classes within DOM, limiting the scope of experiments that probe the physical, chemical, and biological contributions from each class. To address these problems, we synthesized a series of analogues of carboxylate-rich alicyclic molecules (CRAM), a molecular class hypothesized to exist as a major contributor to DOM. Key analytical features of the synthetic CRAMs were consistent with marine DOM, supporting their suitability as chemical substitutes for CRAM. This new approach provides access to a molecular toolkit that will enable previously inaccessible experiments to test many unproven hypotheses surrounding the ever-enigmatic DOM.
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Affiliation(s)
- Alexander
J. Craig
- Analytical
Chemistry, Department of Chemistry BMC, Uppsala University, Uppsala 752 37, Sweden
- Drug
Design and Discovery, Department of Medicinal Chemistry, Uppsala University, Uppsala 752 37, Sweden
| | - Lindon W. K. Moodie
- Drug
Design and Discovery, Department of Medicinal Chemistry, Uppsala University, Uppsala 752 37, Sweden
| | - Jeffrey A. Hawkes
- Analytical
Chemistry, Department of Chemistry BMC, Uppsala University, Uppsala 752 37, Sweden
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Guo Y, Peng B, Liao J, Cao W, Liu Y, Nie X, Li Z, Ouyang R. Recent advances in the role of dissolved organic matter during antibiotics photodegradation in the aquatic environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 916:170101. [PMID: 38242474 DOI: 10.1016/j.scitotenv.2024.170101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/06/2024] [Accepted: 01/09/2024] [Indexed: 01/21/2024]
Abstract
The presence of residual antibiotics in the environment is a prominent issue. Photodegradation behavior is an important way of antibiotics reduction, which is closely related to dissolved organic matter (DOM) in water. The review provides an overview of the latest advancements in the field. Classification, characterization of DOM, and the dominant mechanisms for antibiotic photodegradation were discussed. Furthermore, it summarized and compared the effects of DOM on different antibiotics photodegradation. Moreover, the review comprehensively considered the factors influencing the photodegradation of antibiotics in the aquatic environment, including the characteristics of light, temperature, dosage of DOM, concentration of antibiotics, solution pH, and the presence of coexisting ions. Finally, potential directions were proposed for the development of predictive models for the photodegradation of antibiotics. Based on the review of existing literature, this paper also considered several pathways for the future study of antibiotic photodegradation. This study allows for a better understanding of the DOM's environmental role and provides important new insights into the photochemical fate of antibiotics in the aquatic environment.
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Affiliation(s)
- Yinghui Guo
- Hunan Provincial Key Laboratory for Eco-environmental Changes and Carbon Sequestration of the Dongting Lake Basin, School of Geographic Sciences, Hunan Normal University, Changsha 410081, PR China; Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, PR China
| | - Bo Peng
- Hunan Provincial Key Laboratory for Eco-environmental Changes and Carbon Sequestration of the Dongting Lake Basin, School of Geographic Sciences, Hunan Normal University, Changsha 410081, PR China; Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, PR China.
| | - Jinggan Liao
- Hunan Provincial Key Laboratory for Eco-environmental Changes and Carbon Sequestration of the Dongting Lake Basin, School of Geographic Sciences, Hunan Normal University, Changsha 410081, PR China; Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, PR China
| | - Weicheng Cao
- Hunan Provincial Key Laboratory for Eco-environmental Changes and Carbon Sequestration of the Dongting Lake Basin, School of Geographic Sciences, Hunan Normal University, Changsha 410081, PR China; Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, PR China
| | - Yaojun Liu
- Hunan Provincial Key Laboratory for Eco-environmental Changes and Carbon Sequestration of the Dongting Lake Basin, School of Geographic Sciences, Hunan Normal University, Changsha 410081, PR China; Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, PR China
| | - Xiaodong Nie
- Hunan Provincial Key Laboratory for Eco-environmental Changes and Carbon Sequestration of the Dongting Lake Basin, School of Geographic Sciences, Hunan Normal University, Changsha 410081, PR China; Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, PR China
| | - Zhongwu Li
- Hunan Provincial Key Laboratory for Eco-environmental Changes and Carbon Sequestration of the Dongting Lake Basin, School of Geographic Sciences, Hunan Normal University, Changsha 410081, PR China; Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, PR China
| | - Rui Ouyang
- Hunan Provincial Key Laboratory for Eco-environmental Changes and Carbon Sequestration of the Dongting Lake Basin, School of Geographic Sciences, Hunan Normal University, Changsha 410081, PR China; Institute of Interdisciplinary Studies, Hunan Normal University, Changsha 410081, PR China
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Lechtenfeld OJ, Kaesler J, Jennings EK, Koch BP. Direct Analysis of Marine Dissolved Organic Matter Using LC-FT-ICR MS. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:4637-4647. [PMID: 38427796 PMCID: PMC10938638 DOI: 10.1021/acs.est.3c07219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/20/2024] [Accepted: 02/07/2024] [Indexed: 03/03/2024]
Abstract
Marine dissolved organic matter (DOM) is an important component of the global carbon cycle, yet its intricate composition and the sea salt matrix pose major challenges for chemical analysis. We introduce a direct injection, reversed-phase liquid chromatography ultrahigh resolution mass spectrometry approach to analyze marine DOM without the need for solid-phase extraction. Effective separation of salt and DOM is achieved with a large chromatographic column and an extended isocratic aqueous step. Postcolumn dilution of the sample flow with buffer-free solvents and implementing a counter gradient reduced salt buildup in the ion source and resulted in excellent repeatability. With this method, over 5,500 unique molecular formulas were detected from just 5.5 nmol carbon in 100 μL of filtered Arctic Ocean seawater. We observed a highly linear detector response for variable sample carbon concentrations and a high robustness against the salt matrix. Compared to solid-phase extracted DOM, our direct injection method demonstrated superior sensitivity for heteroatom-containing DOM. The direct analysis of seawater offers fast and simple sample preparation and avoids fractionation introduced by extraction. The method facilitates studies in environments, where only minimal sample volume is available e.g. in marine sediment pore water, ice cores, or permafrost soil solution. The small volume requirement also supports higher spatial (e.g., in soils) or temporal sample resolution (e.g., in culture experiments). Chromatographic separation adds further chemical information to molecular formulas, enhancing our understanding of marine biogeochemistry, chemodiversity, and ecological processes.
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Affiliation(s)
- Oliver J. Lechtenfeld
- Department
of Environmental Analytical Chemistry, Research Group BioGeoOmics, Helmholtz Centre for Environmental Research −
UFZ, Permoserstraße
15, 04318 Leipzig, Germany
- ProVIS−Centre
for Chemical Microscopy, Helmholtz Centre
for Environmental Research − UFZ, Permoserstraße 15, 04318 Leipzig, Germany
| | - Jan Kaesler
- Department
of Environmental Analytical Chemistry, Research Group BioGeoOmics, Helmholtz Centre for Environmental Research −
UFZ, Permoserstraße
15, 04318 Leipzig, Germany
| | - Elaine K. Jennings
- Department
of Environmental Analytical Chemistry, Research Group BioGeoOmics, Helmholtz Centre for Environmental Research −
UFZ, Permoserstraße
15, 04318 Leipzig, Germany
| | - Boris P. Koch
- Alfred-Wegener-Institut
Helmholtz-Zentrum für Polar- und Meeresforschung, Am Handelshafen 12, 27570 Bremerhaven, Germany
- University
of Applied Sciences, An der Karlstadt 8, 27568 Bremerhaven, Germany
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5
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Fonvielle JA, Felgate SL, Tanentzap AJ, Hawkes JA. Assessment of sample freezing as a preservation technique for analysing the molecular composition of dissolved organic matter in aquatic systems. RSC Adv 2023; 13:24594-24603. [PMID: 37593662 PMCID: PMC10427896 DOI: 10.1039/d3ra01349a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 07/12/2023] [Indexed: 08/19/2023] Open
Abstract
Dissolved organic matter (DOM) is widely studied in environmental and biogeochemical sciences, but is susceptible to chemical and biological degradation during sample transport and storage. Samples taken in remote regions, aboard ships, or in large numbers need to be preserved for later analysis without changing DOM composition. Here we compare high-resolution mass spectra of solid phase extractable DOM before and after freezing at -20 °C. We found that freezing increases compositional dissimilarity in DOM by between 0 to 18.2% (median = 2.7% across 7 sites) when comparing replicates that were frozen versus unfrozen, i.e., processed immediately after sampling, as compared with differences between unfrozen replicates. The effects of freezing primarily consisted of a poorer detection limit, but were smaller than other sample preparation and analysis steps, such as solid phase extraction and variable ionisation efficiency. Freezing samples for either 21 or 95 days led to similar and only slight changes in DOM composition, albeit with more variation for the latter. Therefore, we conclude that sample freezing on these time scales should not impede scientific study of aquatic DOM and can be used where it makes logistical sense, such as for large spatial surveys or study of archived samples.
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Affiliation(s)
- Jeremy A Fonvielle
- Ecosystems and Global Change Group, Department of Plant Sciences, University of Cambridge Cambridge CB2 3EA UK
| | - Stacey L Felgate
- Department of Chemistry - BMC, Uppsala University Husargatan 3 Uppsala 752 37 Sweden
| | - Andrew J Tanentzap
- Ecosystems and Global Change Group, Department of Plant Sciences, University of Cambridge Cambridge CB2 3EA UK
- Ecosystems and Global Change Group, School of the Environment, Trent University Peterborough K9L 0G2 Canada
| | - Jeffrey A Hawkes
- Department of Chemistry - BMC, Uppsala University Husargatan 3 Uppsala 752 37 Sweden
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