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Li W, Wang L, Qian Y, Wang M, Li F, Zeng M. True-solution-scale utilization of natural chlorophyll a in aqueous media through cooperative aggregation with phycocyanin. Food Chem 2024; 460:140678. [PMID: 39098190 DOI: 10.1016/j.foodchem.2024.140678] [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: 05/18/2024] [Revised: 07/13/2024] [Accepted: 07/25/2024] [Indexed: 08/06/2024]
Abstract
The challenge of applying chlorophyll(Chl) in aqueous media has been a significant obstacle to the diversified development of Chl a-related industries. This study presents the first report on the true-solution-scale utilization of Chl in aqueous media through the construction of chlorophyll a-phycocyanin (Chls-PC) composite nanoparticles. This study determined the optimal conditions for Chls-PC preparation: a composite ratio of 1:25, a solvent ratio of 1:4, and a stirring time of 1 h. Fluorescence spectroscopy, transmission electron microscope, and confocal microscopy confirmed Chl a and PC aggregation. Surface hydrophobicity and contact angle measurements showed that Chls-PC water solubility was similar to PC and much higher than Chl. Infrared spectroscopy, quantum chemical calculations, X-ray photoelectron spectroscopy, and molecular dynamics simulations elucidated the water solubilization mechanism of Chls-PC both experimentally and theoretically. This research provides theoretical guidance for the development and production of water-based products using Chl as a raw material.
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Affiliation(s)
- Wei Li
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266400, People's Republic of China; Sanya Institute of Oceanography, Ocean University of China, Sanya 572000, People's Republic of China
| | - Lijuan Wang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266400, People's Republic of China; Sanya Institute of Oceanography, Ocean University of China, Sanya 572000, People's Republic of China
| | - Yuemiao Qian
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266400, People's Republic of China; Sanya Institute of Oceanography, Ocean University of China, Sanya 572000, People's Republic of China
| | - Mengwei Wang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266400, People's Republic of China
| | - Fangwei Li
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266400, People's Republic of China; Sanya Institute of Oceanography, Ocean University of China, Sanya 572000, People's Republic of China.
| | - Mingyong Zeng
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266400, People's Republic of China; Sanya Institute of Oceanography, Ocean University of China, Sanya 572000, People's Republic of China.
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Wang Y, Wang Z, Sun H, Lyu T, Ma X, Guo J, Tian Y. Multi-Functional Nano-Doped Hollow Fiber from Microfluidics for Sensors and Micromotors. BIOSENSORS 2024; 14:186. [PMID: 38667179 PMCID: PMC11048216 DOI: 10.3390/bios14040186] [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: 03/13/2024] [Revised: 04/06/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024]
Abstract
Nano-doped hollow fiber is currently receiving extensive attention due to its multifunctionality and booming development. However, the microfluidic fabrication of nano-doped hollow fiber in a simple, smooth, stable, continuous, well-controlled manner without system blockage remains challenging. In this study, we employ a microfluidic method to fabricate nano-doped hollow fiber, which not only makes the preparation process continuous, controllable, and efficient, but also improves the dispersion uniformity of nanoparticles. Hydrogel hollow fiber doped with carbon nanotubes is fabricated and exhibits superior electrical conductivity (15.8 S m-1), strong flexibility (342.9%), and versatility as wearable sensors for monitoring human motions and collecting physiological electrical signals. Furthermore, we incorporate iron tetroxide nanoparticles into fibers to create magnetic-driven micromotors, which provide trajectory-controlled motion and the ability to move through narrow channels due to their small size. In addition, manganese dioxide nanoparticles are embedded into the fiber walls to create self-propelled micromotors. When placed in a hydrogen peroxide environment, the micromotors can reach a top speed of 615 μm s-1 and navigate hard-to-reach areas. Our nano-doped hollow fiber offers a broad range of applications in wearable electronics and self-propelled machines and creates promising opportunities for sensors and actuators.
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Affiliation(s)
- Yanpeng Wang
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China; (Y.W.); (Z.W.); (H.S.); (T.L.)
| | - Zhaoyang Wang
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China; (Y.W.); (Z.W.); (H.S.); (T.L.)
| | - Haotian Sun
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China; (Y.W.); (Z.W.); (H.S.); (T.L.)
| | - Tong Lyu
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China; (Y.W.); (Z.W.); (H.S.); (T.L.)
| | - Xing Ma
- School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China;
| | - Jinhong Guo
- School of Sensing Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ye Tian
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang 110169, China; (Y.W.); (Z.W.); (H.S.); (T.L.)
- Foshan Graduate School of Innovation, Northeastern University, Foshan 528300, China
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Jiang Z, Zhuang Y, Guo S, Sohan ASMMF, Yin B. Advances in Microfluidics Techniques for Rapid Detection of Pesticide Residues in Food. Foods 2023; 12:2868. [PMID: 37569137 PMCID: PMC10417549 DOI: 10.3390/foods12152868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Food safety is a significant issue that affects people worldwide and is tied to their lives and health. The issue of pesticide residues in food is just one of many issues related to food safety, which leave residues in crops and are transferred through the food chain to human consumption. Foods contaminated with pesticide residues pose a serious risk to human health, including carcinogenicity, neurotoxicity, and endocrine disruption. Although traditional methods, including gas chromatography, high-performance liquid chromatography, chromatography, and mass spectrometry, can be used to achieve a quantitative analysis of pesticide residues, the disadvantages of these techniques, such as being time-consuming and costly and requiring specialist staff, limit their application. Therefore, there is a need to develop rapid, effective, and sensitive equipment for the quantitative analysis of pesticide residues in food. Microfluidics is rapidly emerging in a number of fields due to its outstanding strengths. This paper summarizes the application of microfluidic techniques to pyrethroid, carbamate, organochlorine, and organophosphate pesticides, as well as to commercial products. Meanwhile, the study also outlines the development of microfluidics in combination with 3D printing technology and nanomaterials for detecting pesticide residues in food.
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Affiliation(s)
- Zhuoao Jiang
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China; (Z.J.); (Y.Z.); (S.G.)
| | - Yu Zhuang
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China; (Z.J.); (Y.Z.); (S.G.)
| | - Shentian Guo
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China; (Z.J.); (Y.Z.); (S.G.)
| | - A. S. M. Muhtasim Fuad Sohan
- Faculty of Engineering, Department of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5000, Australia;
| | - Binfeng Yin
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China; (Z.J.); (Y.Z.); (S.G.)
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Bacchin P, Leng J, Salmon JB. Microfluidic Evaporation, Pervaporation, and Osmosis: From Passive Pumping to Solute Concentration. Chem Rev 2021; 122:6938-6985. [PMID: 34882390 DOI: 10.1021/acs.chemrev.1c00459] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Evaporation, pervaporation, and forward osmosis are processes leading to a mass transfer of solvent across an interface: gas/liquid for evaporation and solid/liquid (membrane) for pervaporation and osmosis. This Review provides comprehensive insight into the use of these processes at the microfluidic scales for applications ranging from passive pumping to the screening of phase diagrams and micromaterials engineering. Indeed, for a fixed interface relative to the microfluidic chip, these processes passively induce flows driven only by gradients of chemical potential. As a consequence, these passive-transport phenomena lead to an accumulation of solutes that cannot cross the interface and thus concentrate solutions in the microfluidic chip up to high concentration regimes, possibly up to solidification. The purpose of this Review is to provide a unified description of these processes and associated microfluidic applications to highlight the differences and similarities between these three passive-transport phenomena.
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Affiliation(s)
- Patrice Bacchin
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31000 Toulouse, France
| | - Jacques Leng
- CNRS, Solvay, LOF, UMR 5258, Université de Bordeaux, 33600 Pessac, France
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Cirillo AI, Tomaiuolo G, Guido S. Membrane Fouling Phenomena in Microfluidic Systems: From Technical Challenges to Scientific Opportunities. MICROMACHINES 2021; 12:820. [PMID: 34357230 PMCID: PMC8305447 DOI: 10.3390/mi12070820] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 12/13/2022]
Abstract
The almost ubiquitous, though undesired, deposition and accumulation of suspended/dissolved matter on solid surfaces, known as fouling, represents a crucial issue strongly affecting the efficiency and sustainability of micro-scale reactors. Fouling becomes even more detrimental for all the applications that require the use of membrane separation units. As a matter of fact, membrane technology is a key route towards process intensification, having the potential to replace conventional separation procedures, with significant energy savings and reduced environmental impact, in a broad range of applications, from water purification to food and pharmaceutical industries. Despite all the research efforts so far, fouling still represents an unsolved problem. The complex interplay of physical and chemical mechanisms governing its evolution is indeed yet to be fully unraveled and the role played by foulants' properties or operating conditions is an area of active research where microfluidics can play a fundamental role. The aim of this review is to explore fouling through microfluidic systems, assessing the fundamental interactions involved and how microfluidics enables the comprehension of the mechanisms characterizing the process. The main mathematical models describing the fouling stages will also be reviewed and their limitations discussed. Finally, the principal dynamic investigation techniques in which microfluidics represents a key tool will be discussed, analyzing their employment to study fouling.
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Affiliation(s)
- Andrea Iginio Cirillo
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, University of Naples Federico, 80125 Naples, Italy; (A.I.C.); (S.G.)
- CEINGE Advanced Biotechnologies, 80131 Naples, Italy
| | - Giovanna Tomaiuolo
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, University of Naples Federico, 80125 Naples, Italy; (A.I.C.); (S.G.)
- CEINGE Advanced Biotechnologies, 80131 Naples, Italy
| | - Stefano Guido
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, University of Naples Federico, 80125 Naples, Italy; (A.I.C.); (S.G.)
- CEINGE Advanced Biotechnologies, 80131 Naples, Italy
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Davoudi S, Ghysels A. Sampling efficiency of the counting method for permeability calculations estimated with the inhomogeneous solubility-diffusion model. J Chem Phys 2021; 154:054106. [PMID: 33557559 DOI: 10.1063/5.0033476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Permeability is a key property in various fields such as membrane technology for chemical separation and transport of substances through cell membranes. At the molecular scale, the counting method uses the number of membrane crossings in a conventional unbiased molecular dynamics simulation to predict the permeability. This contribution investigates under which conditions the counting method has insufficient statistics. An equation is derived for a compartmental model based on the inhomogeneous solubility-diffusion (Smoluchowski) model, giving insight into how the flux correlates with the solubility of permeants. This equation shows that a membrane crossing is a rare event not only when the membrane forms a large free energy barrier but also when the membrane forms a deep free energy well that traps permeants. Such a permeant trap has a high permeability; yet, the counting method suffers from poor statistics. To illustrate this, coarse-grained MD was run for 16 systems of dipalmitoylphosphatidylcholine bilayer membranes with different permeant types. The composition rule for permeability is shown to also hold for fluxes, and it is highlighted that the considered thickness of the membrane causes uncertainty in the permeability calculation of highly permeable membranes. In conclusion, a high permeability in itself is not an effective indicator of the sampling efficiency of the counting method, and caution should be taken for permeants whose solubility varies greatly over the simulation box. A practical consequence relevant in, e.g., drug design is that a drug with high membrane permeability might get trapped by membranes thus reducing its efficacy.
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Affiliation(s)
- Samaneh Davoudi
- IBiTech-BioMMeda Group, Ghent University, Corneel Heymanslaan 10, Block B-entrance 36, 9000 Gent, Belgium
| | - An Ghysels
- IBiTech-BioMMeda Group, Ghent University, Corneel Heymanslaan 10, Block B-entrance 36, 9000 Gent, Belgium
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