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Hossein F, Angeli P. A review of acoustofluidic separation of bioparticles. Biophys Rev 2023; 15:2005-2025. [PMID: 38192342 PMCID: PMC10771489 DOI: 10.1007/s12551-023-01112-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 08/09/2023] [Indexed: 01/08/2024] Open
Abstract
Acoustofluidics is an emerging interdisciplinary research field that involves the integration of acoustics and microfluidics to address challenges in various scientific areas. This technology has proven to be a powerful tool for separating biological targets from complex fluids due to its label-free, biocompatible, and contact-free nature. Considering a careful designing process and tuning the acoustic field particles can be separated with high yield. Recently the advancement of acoustofluidics led to the development of point-of-care devices for separations of micro particles which address many of the limitations of conventional separation tools. This review article discusses the working principles and different approaches of acoustofluidic separation and provides a synopsis of its traditional and emerging applications, including the theory and mechanism of acoustofluidic separation, blood component separation, cell washing, fluorescence-activated cell sorting, circulating tumor cell isolation, and exosome isolation. The technology offers great potential for solving clinical problems and advancing scientific research.
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Affiliation(s)
- Fria Hossein
- Department of Chemical Engineering, University College London, Torrington Place, WC1E 7JE, London, UK
| | - Panagiota Angeli
- Department of Chemical Engineering, University College London, Torrington Place, WC1E 7JE, London, UK
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2
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Sargautis D, Kince T. Effect of Enzymatic Pre-Treatment on Oat Flakes Protein Recovery and Properties. Foods 2023; 12:foods12050965. [PMID: 36900482 PMCID: PMC10001348 DOI: 10.3390/foods12050965] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 03/02/2023] Open
Abstract
Oats are considered an exceptional source of high-quality protein. Protein isolation methods define their nutritional value and further applicability in food systems. The aim of this study was to recover the oat protein using a wet-fractioning method and investigate the protein functional properties and nutritional values among the processing streams. The oat protein was concentrated through enzymatic extraction, eliminating starch and non-starch polysaccharides (NSP), treating oat flakes with hydrolases, and reaching protein concentrations of up to about 86% in dry matter. The increased ionic strength from adding sodium chloride (NaCl) improved protein aggregation and resulted in increased protein recovery. Ionic changes improved protein recovery in provided methods by up to 24.8 % by weight. Amino acid (AA) profiles were determined in the obtained samples, and protein quality was compared with the required pattern of indispensable amino acids. Furthermore, functional properties of the oat protein, such as solubility, foamability, and liquid holding capacity, were investigated. The solubility of the oat protein was below 7 %; foamability averaged below 8%. The water and oil-holding reached a ratio of up to 3.0 and 2.1 for water and oil, respectively. Our findings suggest that oat protein could be a potential ingredient for food industries requiring a protein of high purity and nutritional value.
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Kundu D, Bhattacharyya S, Gopmandal PP, Ohshima H. Settling of a charged hydrophobic rigid colloid in aqueous media under generalized gravitational field. Electrophoresis 2020; 42:1010-1020. [PMID: 33159354 DOI: 10.1002/elps.202000240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 10/20/2020] [Accepted: 10/25/2020] [Indexed: 11/07/2022]
Abstract
The hindrance created by the induced electric filed on the sedimentation of a charged colloid in an aqueous media is studied through numerical modeling. The colloid is considered to be hydrophobic, sedimenting under gravity or a centrifugal force (generalized gravity). The deformation of the charge cloud around the colloid induces an electric field, which generates electrical dipole force on the colloid. The sedimentation velocity is governed by the balance of an electric force, hydrodynamic drag, and gravitational force. Governing equations based on the first principle of electrokinetics is solved numerically through a control volume approach. The dependence of the sedimentation velocity on the electrical properties and slip length of the colloid is investigated. The sedimentation velocity of the charged colloid is slower than the corresponding uncharged particle and this deviation magnifies as the charge density as well as particle slip length is increased. An enhanced g-factor creates a size dependency of the charged colloids. The induced sedimentation field is obtained to analyze the electrokinetics. Surface hydrophobicity enhances the sedimentation velocity, which in turn manifests the induced sedimentation field. However, the sedimentation velocity of a charged hydrophobic colloid is lower than the corresponding uncharged hydrophobic particle and this deviation manifests as slip length is increased.
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Affiliation(s)
- Dipankar Kundu
- Department of Mathematics, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Somnath Bhattacharyya
- Department of Mathematics, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Partha P Gopmandal
- Department of Mathematics, National Institute of Technology Durgapur, Durgapur, 713209, India
| | - Hiroyuki Ohshima
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki Noda, Chiba, 278-8510, Japan
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Chairopoulou MA, Kratzer F, Gross R, Herrmann M, Teipel U. Influence of the Temperature on Coccolith‐Containing Systems from Emiliania huxleyiCultivations. Chem Eng Technol 2020. [DOI: 10.1002/ceat.201900507] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Makrina A. Chairopoulou
- Technische Hochschule Nürnberg Georg Simon OhmFaculty of Process EngineeringResearch Group “Particle Technology and Raw Materials Innovation” (FPR) Wassertorstrasse 10 90489 Nuremberg Germany
| | - Fabian Kratzer
- PhysChem Analytics GmbH Schottenfeld 5 90537 Feucht Germany
| | - Roland Gross
- PhysChem Analytics GmbH Schottenfeld 5 90537 Feucht Germany
| | - Michael Herrmann
- Fraunhofer Institut für Chemische Technologie ICT Joseph-von-Fraunhofer-Strasse 7 76327 Pfinztal Germany
| | - Ulrich Teipel
- Technische Hochschule Nürnberg Georg Simon OhmFaculty of Process EngineeringResearch Group “Particle Technology and Raw Materials Innovation” (FPR) Wassertorstrasse 10 90489 Nuremberg Germany
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Influence of non-ionic surfactant addition on the stability and rheology of particle-stabilized emulsions. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124084] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Faucher S, Le Coustumer P, Lespes G. Nanoanalytics: history, concepts, and specificities. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:5267-5281. [PMID: 29549615 DOI: 10.1007/s11356-018-1646-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 02/28/2018] [Indexed: 06/08/2023]
Abstract
This article deals with analytical chemistry devoted to nano-objects. A short review presents nano-objects, their singularity in relation to their dimensions, genesis, and possible transformations. The term nano-object is then explained. Nano-object characterization activities are considered and a definition of nanoanalytics is proposed. Parameters and properties for describing nano-objects on an individual scale and on the scale of a population are also presented. They enable the specificities of analytical activities to be highlighted in terms of multi-criteria description strategies and observation scale. Special attention is given to analytical methods, their dimensioning and validation.
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Affiliation(s)
- Stéphane Faucher
- CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), UMR 5254, Université de Pau et des Pays de l'Adour, Helioparc, 2 Avenue Pierre Angot, 64053, PAU, France
| | - Philippe Le Coustumer
- CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), UMR 5254, Université de Pau et des Pays de l'Adour, Helioparc, 2 Avenue Pierre Angot, 64053, PAU, France
- UF STE, Université de Bordeaux, B18, Avenue Geoffroy Saint Hilaire, 33615, PESSAC Cedex, France
| | - Gaëtane Lespes
- CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), UMR 5254, Université de Pau et des Pays de l'Adour, Helioparc, 2 Avenue Pierre Angot, 64053, PAU, France.
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Chairopoulou MA, Pereyra C, Teipel U. Formation and Separation of Particles from Emiliania huxleyi. Chem Eng Technol 2018. [DOI: 10.1002/ceat.201700594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Makrina Artemis Chairopoulou
- Technische Hochschule Nürnberg Georg Simon Ohm; Faculty of Process Engineering, FPR; Wassertorstrasse 10 90489 Nuremberg Germany
- Universidad of Cádiz; Departamento de Ingeniería Quimíca y Tecnología de Alimentos; Facultad de Ciencias; Avda. República Saharaui s/n 11510 Puerto Real Spain
| | - Clara Pereyra
- Universidad of Cádiz; Departamento de Ingeniería Quimíca y Tecnología de Alimentos; Facultad de Ciencias; Avda. República Saharaui s/n 11510 Puerto Real Spain
| | - Ulrich Teipel
- Technische Hochschule Nürnberg Georg Simon Ohm; Faculty of Process Engineering, FPR; Wassertorstrasse 10 90489 Nuremberg Germany
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Yenkie KM, Wu W, Clark RL, Pfleger BF, Root TW, Maravelias CT. A roadmap for the synthesis of separation networks for the recovery of bio-based chemicals: Matching biological and process feasibility. Biotechnol Adv 2016; 34:1362-1383. [PMID: 27756578 DOI: 10.1016/j.biotechadv.2016.10.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 09/20/2016] [Accepted: 10/14/2016] [Indexed: 12/20/2022]
Abstract
Microbial conversion of renewable feedstocks to high-value chemicals is an attractive alternative to current petrochemical processes because it offers the potential to reduce net CO2 emissions and integrate with bioremediation objectives. Microbes have been genetically engineered to produce a growing number of high-value chemicals in sufficient titer, rate, and yield from renewable feedstocks. However, high-yield bioconversion is only one aspect of an economically viable process. Separation of biologically synthesized chemicals from process streams is a major challenge that can contribute to >70% of the total production costs. Thus, process feasibility is dependent upon the efficient selection of separation technologies. This selection is dependent on upstream processing or biological parameters, such as microbial species, product titer and yield, and localization. Our goal is to present a roadmap for selection of appropriate technologies and generation of separation schemes for efficient recovery of bio-based chemicals by utilizing information from upstream processing, separation science and commercial requirements. To achieve this, we use a separation system comprising of three stages: (I) cell and product isolation, (II) product concentration, and (III) product purification and refinement. In each stage, we review the technology alternatives available for different tasks in terms of separation principles, important operating conditions, performance parameters, advantages and disadvantages. We generate separation schemes based on product localization and its solubility in water, the two most distinguishing properties. Subsequently, we present ideas for simplification of these schemes based on additional properties, such as physical state, density, volatility, and intended use. This simplification selectively narrows down the technology options and can be used for systematic process synthesis and optimal recovery of bio-based chemicals.
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Affiliation(s)
- Kirti M Yenkie
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - WenZhao Wu
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Ryan L Clark
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Brian F Pfleger
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Thatcher W Root
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Christos T Maravelias
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States.
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9
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Affiliation(s)
- Gaëtane Lespes
- Université de Pau et des Pays de l'Adour; Avenue de l'Université, BP 1155 64013 Pau Cedex France
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Controlling Pickering Emulsion Destabilisation: A Route to Fabricating New Materials by Phase Inversion. MATERIALS 2016; 9:ma9080626. [PMID: 28773747 PMCID: PMC5509044 DOI: 10.3390/ma9080626] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 07/22/2016] [Accepted: 07/22/2016] [Indexed: 11/30/2022]
Abstract
The aim of this paper is to review the key findings about how particle-stabilised (or Pickering) emulsions respond to stress and break down. Over the last ten years, new insights have been gained into how particles attached to droplet (and bubble) surfaces alter the destabilisation mechanisms in emulsions. The conditions under which chemical demulsifiers displace, or detach, particles from the interface were established. Mass transfer between drops and the continuous phase was shown to disrupt the layers of particles attached to drop surfaces. The criteria for causing coalescence by applying physical stress (shear or compression) to Pickering emulsions were characterised. These findings are being used to design the structures of materials formed by breaking Pickering emulsions.
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Electrokinetics of a charged permeable porous aggregate in an aqueous medium. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.04.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Migration of a charged sphere at an arbitrary velocity in an axial electric field. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.09.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Interfacial displacement of nanoparticles by surfactant molecules in emulsions. J Colloid Interface Sci 2010; 349:537-43. [DOI: 10.1016/j.jcis.2010.05.089] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2010] [Revised: 05/26/2010] [Accepted: 05/27/2010] [Indexed: 11/18/2022]
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14
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Novak S, Maver U, Peternel Š, Venturini P, Bele M, Gaberšček M. Electrophoretic deposition as a tool for separation of protein inclusion bodies from host bacteria in suspension. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.03.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Wohlgemuth R. The locks and keys to industrial biotechnology. N Biotechnol 2009; 25:204-13. [PMID: 19429540 DOI: 10.1016/j.nbt.2009.01.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2008] [Revised: 01/07/2009] [Accepted: 01/08/2009] [Indexed: 11/27/2022]
Abstract
The sustainable use of resources by Nature to synthesize the required products at the right place, when they are needed, continues to be the role model for total synthesis and production in general. The combination of molecular and engineering science and technology in the biotechnological approach needs no protecting groups at all and has therefore been established for numerous large-scale routes to both natural and synthetic products in industry. The use of biobased raw materials for chemical synthesis, and the economy of molecular transformations like atom economy and step economy are of growing importance. As safety, health and environmental issues are key drivers for process improvements in the chemical industry, the development of biocatalytic reactions or pathways replacing hazardous reagents is a major focus. The integration of the biocatalytic reaction and downstream processing with product isolation has led to a variety of in situ product recovery techniques and has found numerous successful applications. With the growing collection of biocatalytic reactions, the retrosynthetic thinking can be applied to biocatalysis as well. The introduction of biocatalytic reactions is uniquely suited to cost reductions and higher quality products, as well as to more sustainable processes. The transfer of Nature's simple and robust sensing and control principles as well as its reaction and separation organization into useful technical systems can be applied to different fermentations, biotransformations and downstream processes. Biocatalyst and pathway discovery and development is the key towards new synthetic transformations in industrial biotechnology.
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Affiliation(s)
- Roland Wohlgemuth
- Sigma-Aldrich, Research Specialities, Industriestrasse 25, 9470 Buchs, Switzerland.
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Sartor M, Kaschek M, Mavrov V, Chmiel H. Untersuchungen zum Einfluss elektrokinetischer Wechselwirkungen auf die Adsorptionsmechanismen bei der Tiefenfiltration. CHEM-ING-TECH 2008. [DOI: 10.1002/cite.200700175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Zhu JH, Yan XL, Chen HJ, Wang ZH. In situ extraction of intracellular l-asparaginase using thermoseparating aqueous two-phase systems. J Chromatogr A 2007; 1147:127-34. [PMID: 17328902 DOI: 10.1016/j.chroma.2007.02.035] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2006] [Revised: 02/01/2007] [Accepted: 02/06/2007] [Indexed: 11/22/2022]
Abstract
The feasibility and generic applicability of directly integrating conventional discrete operations of cell disruption by high pressure homogenizer and the product capture by aqueous two-phase extraction (ATPE) system have been demonstrated for the extraction of intracellular L-asparaginase from E. coli. In a side-by-side comparison with the conventional ATPE process, including cell disruption, centrifugal clarification and following ATPE, purification of L-asparaginase via this novel in situ ATPE process yielded a product of L-asparaginase with a higher specific activity of 94.8 U/(mg protein) and a higher yield of 73.3%, both of which in the conventional ATPE process were 78.6 U/(mg protein) and 52.1%, respectively. In the purification of L-asparaginase (pI=4.9), product-debris interactions commonly diminish its recovery. It was demonstrated that immediate extraction of L-asparaginase in ATPE systems when it is released at pH 5.0 during cell disruption effectively increased its recovery in the top phase due to the reduced interaction between L-asparaginase and cell debris and the reduced degradation by contaminated protease. In addition, no clarification step and/or disruptate storage are required in this in situ ATPE, which reduced the number of unit operations and thus shortened the overall process time. This novel process has a good potential for the separation of other intracellular biological products.
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Affiliation(s)
- Jian-Hang Zhu
- Key Laboratory of Poyang Lake Ecology and Bio-Resource Utilization of Ministry of Education, School of Environmental Science and Engineering, Nanchang University, Nanchang, Jiangxi 330031, China.
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