201
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Foster T, Lim P, Ionescu CM, Wagle SR, Kovacevic B, Mooranian A, Al-Salami H. Exploring delivery systems for targeted nanotechnology-based gene therapy in the inner ear. Ther Deliv 2024; 15:801-818. [PMID: 39324734 DOI: 10.1080/20415990.2024.2389032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 08/02/2024] [Indexed: 09/27/2024] Open
Abstract
Hearing loss places a significant burden on our aging population. However, there has only been limited progress in developing therapeutic techniques to effectively mediate this condition. This review will outline several of the most commonly utilized practices for the treatment of sensorineural hearing loss before exploring more novel techniques currently being investigated via both in vitro and in vivo research. This review will place particular emphasis on novel gene-delivery technologies. Primarily, it will focus on techniques used to deliver genes that have been shown to encourage the proliferation and differentiation of sensory cells within the inner ear and how these technologies may be translated into providing clinically useful results for patients.
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Affiliation(s)
- Thomas Foster
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia, Australia
- Department of Clinical Biochemistry, Pathwest Laboratory Medicine, Royal Perth Hospital, Perth, 6000, Western Australia, Australia
| | - Patrick Lim
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia, Australia
| | - Corina Mihaela Ionescu
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia, Australia
| | - Susbin Raj Wagle
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia, Australia
| | - Bozica Kovacevic
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia, Australia
| | - Armin Mooranian
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia, Australia
- School of Pharmacy, University of Otago, Dunedin, 9016, Otago, New Zealand
| | - Hani Al-Salami
- The Biotechnology & Drug Development Research Laboratory, Curtin Medical School & Curtin Health Innovation Research Institute, Curtin University, Bentley, 6102, Western Australia, Australia
- Medical School, University of Western Australia, Perth, 6000, Western Australia, Australia
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202
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Abutalebi A, Christopher GF. Creating High Yield Stress Particle-Laden Oil/Water Interfaces Using Charge Bidispersity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39325636 DOI: 10.1021/acs.langmuir.4c02513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/28/2024]
Abstract
Interfacial engineering has been increasingly used to stabilize Pickering emulsions in commercial products and biomedical applications. Pickering emulsion stabilization is aided by interfacial viscoelasticity; however, typically the primary means of stabilization are steric hindrances between high surface concentration shells of particles around the drops. In this work, the concept of creating large interfacial viscoelastic yield stresses with low particle surface concentrations (<50%) using bidisperse charged particle systems is tested to evaluate their potential efficacy in emulsion stabilization. To explore this hypothesis, interfacial rheology and visualization experiments are conducted at o/w interfaces using positively charged amidine, negatively charged carboxylate, and negatively charged sulfate-coated latex spheres and compared to a model based on interparticle forces. Bidisperse particle systems have been observed to create more networked structures than monodisperse systems. For surface concentrations of <50%, bidisperse interfaces created measurable viscoelastic moduli ∼1 order of magnitude larger than monodisperse interfaces. Furthermore, these interfaces have measurable yield stresses on the order of 10-4 Pa·m when monodisperse systems have none. Bidispersity impacts surface viscoelasticity primarily by increasing the overall magnitude of attraction between particles at the interface and not due to changes in the microstructure. The developed model predicts the relative surface fraction that creates the largest moduli and shows good agreement with the experimental data. The results demonstrate the ability to create large viscoelastic moduli for small surface fractions of particles, which may enable stabilization using fewer particles in future applications.
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Affiliation(s)
- Arsalan Abutalebi
- Department of Mechanical Engineering, Whitacre College of Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Gordon F Christopher
- Department of Mechanical Engineering, Whitacre College of Engineering, Texas Tech University, Lubbock, Texas 79409, United States
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203
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Lau K, Sharpe S, Cerruti M. Initiation of Medial Calcification: Revisiting Calcium Ion Binding to Elastin. J Phys Chem B 2024. [PMID: 39324564 DOI: 10.1021/acs.jpcb.4c04464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Pathological calcification of elastin, a key connective tissue protein in the medial layers of blood vessels, starts with the binding of calcium ions. This Mini-Review focuses on understanding how calcium ions interact with elastin to initiate calcification at a molecular level, and emphasizes water's critical role in mediating this interaction. In the past decade, great strides have been made in understanding and modeling ion-specific hydration and its effects on biomolecule interactions. However, these advances have been largely absent from our understanding of elastin calcification. Historically, charge-neutral backbone carbonyls and negatively charged carboxyl groups have been proposed as elastin's calcium binding sites. Recently, tropoelastin's only four carboxyl groups have been identified as binding sites from classical molecular dynamics (MD). While carboxyl groups have a much higher affinity for binding calcium ions than backbone carbonyls, conflicting evidence persists for both functional group's importance in elastin calcification. This can be attributed to the fact that divalent ions strongly polarize water, leading to a hydration shell that shields electrostatic forces. The hydration shell surrounding both a calcium ion and either of the proposed binding sites must be displaced to enable binding. Providing our own extended X-ray absorption fine structure (EXAFS) data and complementary simulations, we discuss the potential structures of calcium binding in elastin and review prior knowledge regarding the relative importance of the two proposed binding sites.
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Affiliation(s)
- Kirklann Lau
- Department of Mining and Materials Engineering, McGill University, 3610 University Street Wong Building, 2250, Montreal, QC H3A 0C5, Canada
| | - Simon Sharpe
- Molecular Medicine, Hospital for Sick Children, Peter Gilgan Center for Research and Learning 686 Bay St., Room 20.9714, Toronto, ON M5G 1X8, Canada
- Department of Biochemistry, University of Toronto, 1 King's College Circle, Medical Sciences Building, Room 5207, Toronto, ON M5S 1A8, Canada
| | - Marta Cerruti
- Department of Mining and Materials Engineering, McGill University, 3610 University Street Wong Building, 2250, Montreal, QC H3A 0C5, Canada
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204
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Dorsey PJ, Lau CL, Chang TC, Doerschuk PC, D'Addio SM. Review of Machine Learning for Lipid Nanoparticle Formulation and Process Development. J Pharm Sci 2024:S0022-3549(24)00422-2. [PMID: 39341497 DOI: 10.1016/j.xphs.2024.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 09/10/2024] [Accepted: 09/11/2024] [Indexed: 10/01/2024]
Abstract
Lipid nanoparticles (LNPs) are a subset of pharmaceutical nanoparticulate formulations designed to encapsulate, stabilize, and deliver nucleic acid cargoes in vivo. Applications for lipid nanoparticles include new interventions for genetic disorders, novel classes of vaccines, and alternate modes of intracellular delivery for therapeutic proteins. In the pharmaceutical industry, establishing a robust formulation and process to achieve target product performance is a critical component of drug development. Fundamental understanding of the processes for making LNPs and their interactions with biological systems have advanced considerably in the wake of the COVID-19 pandemic. Nevertheless, LNP formulation research remains largely empirical and resource intensive due to the multitude of input parameters and the complex physical phenomena that govern the processes of nanoparticle precipitation, self-assembly, structure evolution, and stability. Increasingly, artificial intelligence and machine learning (AI/ML) are being applied to improve the efficiency of research activities through in silico models and predictions, and to drive deeper fundamental understanding of experimental inputs to functional outputs. This review will identify current challenges and opportunities in the development of robust LNP formulations of nucleic acids, review studies that apply machine learning methods to experimental datasets, and provide discussion on associated data science challenges to facilitate collaboration between formulation and data scientists, aiming to accelerate the advancement of AI/ML applied to LNP formulation and process optimization.
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Affiliation(s)
- Phillip J Dorsey
- Pharmaceutical Sciences & Clinical Supply, Merck Research Labs, Merck & Co. Inc., Rahway, NJ 07065, USA; University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Christina L Lau
- Cornell University, School of Electrical and Computer Engineering, Ithaca, NY 14853, USA
| | - Ti-Chiun Chang
- Pharmaceutical Sciences & Clinical Supply, Merck Research Labs, Merck & Co. Inc., Rahway, NJ 07065, USA
| | - Peter C Doerschuk
- Cornell University, School of Electrical and Computer Engineering, Ithaca, NY 14853, USA
| | - Suzanne M D'Addio
- Pharmaceutical Sciences & Clinical Supply, Merck Research Labs, Merck & Co. Inc., Rahway, NJ 07065, USA.
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205
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Mammella A, Bhavana V, Chary PS, Anuradha U, Mehra NK. Modulation of chondroprotective hyaluronic acid and poloxamer gel with Ketoprofen loaded transethosomes: Quality by design-based optimization, characterization, and preclinical investigations in osteoarthritis. Int J Biol Macromol 2024; 280:135919. [PMID: 39341323 DOI: 10.1016/j.ijbiomac.2024.135919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 09/09/2024] [Accepted: 09/20/2024] [Indexed: 10/01/2024]
Abstract
Osteoarthritis (OA) is a chronic joint disease that results in biomechanical and morphological changes that contribute to cartilage degradation. Ketoprofen (KP), used in the treatment of OA, is a selective inhibitor of cyclooxygenase-2 (COX-2). Topical administration of KP bypasses gastric irritation as well as first-pass metabolism and increases localized delivery. The research intricates fabrication and optimization of KP-loaded transethosomes (KP-TEs) via Taguchi orthogonal array design and Central composite design (CCD). The optimized KP-TEs depicted an average vesicle size of 110.0 ± 1.70 nm, poly dispersibility index (PDI) of 0.103 ± 0.01, zeta potential -6.08 ± 0.27 mV, and conductivity of 0.049 ± 0.0001 mS/cm. The optimized KP-TEs were loaded in composite hyaluronic acid (HA) and poloxamer 407 (Px407) for an improvement of osteotrophic and chondroprotective transethosomal gel. The drug content of KP-TEs-HA/Px407 gel was found to be 90.08 ± 1.25 %. Preclinical research has been carried out by using the monosodium iodoacetate to develop model for osteoarthritis in male wistar rats. The X-ray imaging of KP-TEs-HA/Px407 gel treated group showed intact meniscus, healthy articular joint, and normal synovial lining same as the healthy control group. The IL - 1β IL-6, IL-22, TNF-α, and IL-10, levels, X-ray imaging, and studies on histopathology demonstrated the effectiveness of transethosomal gel in reducing pain and inflammation.
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Affiliation(s)
- Aishwarya Mammella
- Pharmaceutical Nanotechnology Research Laboratory, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana 500037, India
| | - Valamla Bhavana
- Pharmaceutical Nanotechnology Research Laboratory, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana 500037, India
| | - Padakanti Sandeep Chary
- Pharmaceutical Nanotechnology Research Laboratory, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana 500037, India
| | - Urati Anuradha
- Department of Biological Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana 500037, India
| | - Neelesh Kumar Mehra
- Pharmaceutical Nanotechnology Research Laboratory, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana 500037, India.
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206
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Rui X, Watanabe NM, Okamoto Y, Wakileh W, Umakoshi H. Exploring pH-Triggered Lamellar to Cubic Phase Transition in 2-Hydroxyoleic Acid/Monoolein Nanodispersions: Insights into Membrane Physicochemical Properties. J Phys Chem B 2024; 128:9151-9162. [PMID: 39285755 DOI: 10.1021/acs.jpcb.4c03747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Self-assembled lipid nanoparticles (LNPs) are essential nanocarriers for drug delivery. Functionalization of LNPs with ionizable lipids creates pH-responsive nanoparticles that change structures under varying pH conditions, enabling pH-triggered drug release. Typically, bicontinuous cubic phase nanoparticles (Cubosomes) and lamellar structured vesicles (Liposomes) differ in lipid packing statuses, affecting drug release and cellular uptake. However, most research predominantly focuses on elucidating lattice structure changes of these LNPs without a deep investigation of lipid-membrane properties. Addressing this gap, our study delves into the lipid-membrane physicochemical property variations during the lamellar-to-cubic phase transition. Here, we prepared pH-responsive LNPs using 2-hydroxyoleic acid/monoolein (2-OHOA/MO) binary components. Small-angle X-ray scattering (SAXS) revealed a phase transition from lamellar vesicles (Lα) to cubosomes (Im3m/Pn3m) with pH reduction. Laurdan and 1,6-diphenyl-1,3,5-hexatriene (DPH) fluorescence probes tracked the lipid-water interfacial polarity and lipid-membrane fluidity variations during the phase transition. Raman spectroscopy provided further insights into lipid-membrane lipid chain packing and chain torsion. We observed that the changes in lipid-membrane properties coincided with the lamellar-to-cubic phase transition, emphasizing the interplay between the phase structure and lipid-membrane behaviors in the 2-OHOA/MO system. This study provides insights into the lipid-membrane properties variation during the pH-triggered phase transition in the 2-OHOA/MO system, guiding future research toward more effective and reliable pH-responsive drug delivery platforms.
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Affiliation(s)
- Xuehui Rui
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Nozomi Morishita Watanabe
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Yukihiro Okamoto
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Ward Wakileh
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Hiroshi Umakoshi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
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207
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Dos Santos Silva Araújo L, Chiappisi L. Effect of hydrostatic pressure on the supramolecular assembly of surfactant-cyclodextrin inclusion complexes. Phys Chem Chem Phys 2024; 26:24246-24249. [PMID: 38982932 DOI: 10.1039/d4cp02043j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
The supramolecular assembly of simple colloids into complex, hierarchical structures arises from a delicate interplay of short-range directional and isotropic long-range forces. These assemblies are highly sensitive to environmental changes, such as temperature variations and the presence of specific molecules, making them promising candidates for nanomachine design. In this study, we investigate the effect of hydrostatic pressure, up to 1800 bar, on the supramolecular assemblies of cyclodextrin/surfactant complexes. Using small-angle neutron scattering, we demonstrate that while the overall structure of the supramolecular aggregates remains largely stable under pressure, the stiffness of the planar lattice formed by the inclusion complexes, the basic structural unit of the supramolecular assemblies, shows a fourfold increase between 250 and 1000 bar. These findings suggest that high-pressure studies can be exploited to better understand the mechanisms of supramolecular assembly processes, thereby aiding in the design of more robust and functional systems.
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Affiliation(s)
| | - Leonardo Chiappisi
- Institut Max von Laue - Paul Langevin (ILL), 71, avenue des Martyrs, 38042 Grenoble, France.
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208
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Lascari D, Cataldo S, Muratore N, Prestopino G, Pignataro B, Lazzara G, Arrabito G, Pettignano A. Label-free impedimetric analysis of microplastics dispersed in aqueous media polluted by Pb 2+ ions. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 39320121 DOI: 10.1039/d4ay01324g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
The rapid differentiation between polluted and unpolluted microplastics (MPs) is critical for tracking their presence in the environment and underpinning their potential risks to humans. However, the quantitative analysis of polluted microplastics on the field is limited by the lack of rapid methods that do not need optical analysis nor their capture onto sophisticated electrochemical sensor platforms. Herein, a simple analytical approach for MPs dispersed in aqueous media leveraging electrochemical impedance spectroscopy (EIS) analysis on screen-printed sensors is presented. This method is demonstrated by the EIS-based analysis of two standards of microplastics beads (MPs), one of polystyrene (PS) and one of polystyrene carboxylated (PS-COOH), when exposed to aqueous solutions containing Pb2+ ions. The adsorption of Pb2+ ions on the MPs was quantitatively determined by voltammetric analysis. EIS permitted to rapidly (about 2 minutes) differentiate clean MPs from the Pb2+ polluted ones. These results could constitute a first-step towards the realization of a portable impedimetric sensor for the quantification of microplastics polluted by metal ions in aqueous solutions.
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Affiliation(s)
- Davide Lascari
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università di Palermo, V.le delle Scienze, ed. 17, 90128 Palermo, Italy.
| | - Salvatore Cataldo
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università di Palermo, V.le delle Scienze, ed. 17, 90128 Palermo, Italy.
- NBFC, National Biodiversity Future Center, Palermo, Piazza Marina 61, 90133 Palermo, Italy
| | - Nicola Muratore
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università di Palermo, V.le delle Scienze, ed. 17, 90128 Palermo, Italy.
| | - Giuseppe Prestopino
- Dipartimento di Ingegneria Industriale, Università degli Studi di Roma "Tor Vergata", Via del Politecnico, 00133 Rome, Italy
| | - Bruno Pignataro
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università di Palermo, V.le delle Scienze, ed. 17, 90128 Palermo, Italy.
| | - Giuseppe Lazzara
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università di Palermo, V.le delle Scienze, ed. 17, 90128 Palermo, Italy.
- NBFC, National Biodiversity Future Center, Palermo, Piazza Marina 61, 90133 Palermo, Italy
| | - Giuseppe Arrabito
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università di Palermo, V.le delle Scienze, ed. 17, 90128 Palermo, Italy.
| | - Alberto Pettignano
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università di Palermo, V.le delle Scienze, ed. 17, 90128 Palermo, Italy.
- NBFC, National Biodiversity Future Center, Palermo, Piazza Marina 61, 90133 Palermo, Italy
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209
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Daddi-Moussa-Ider A, Tjhung E, Pradas M, Richter T, Menzel AM. Rotational dynamics of a disk in a thin film of weakly nematic fluid subject to linear friction. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2024; 47:58. [PMID: 39322774 PMCID: PMC11424714 DOI: 10.1140/epje/s10189-024-00452-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Accepted: 09/09/2024] [Indexed: 09/27/2024]
Abstract
Dynamics at low Reynolds numbers experiences recent revival in the fields of biophysics and active matter. While in bulk isotropic fluids it is exhaustively studied, this is less so in anisotropic fluids and in confined situations. Here, we combine the latter two by studying the rotation of a disk-like inclusion in a uniaxially anisotropic, globally oriented, incompressible two-dimensional fluid film. In terms of a perturbative expansion in parameters that quantify anisotropies in viscosity and in additional linear friction with a supporting substrate or other type of confinement, we derive analytical expressions for the resulting hydrodynamic flow and pressure fields as well as for the resistance and mobility coefficients of the rotating disk. It turns out that, in contrast to translational motion, the solutions remain well-behaved also in the absence of the additional linear friction. Comparison with results from finite-element simulations shows very good agreement with those from our analytical calculations. Besides applications to describe technological systems, for instance, in the area of microfluidics and thin cells of aligned nematic liquid crystals, our solutions are important for quantitative theoretical approaches to fluid membranes and thin films in general featuring a preferred direction.
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Affiliation(s)
| | - Elsen Tjhung
- School of Mathematics and Statistics, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK
| | - Marc Pradas
- School of Mathematics and Statistics, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK
| | - Thomas Richter
- Institut für Analysis und Numerik, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, Magdeburg, 39106, Germany
| | - Andreas M Menzel
- Institut für Physik, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, Magdeburg, 39106, Germany
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210
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Sasaki Y, Nishizawa Y, Watanabe N, Uchihashi T, Suzuki D. Elastomer Particle Monolayers Formed by the Compression of Poly(methyl acrylate) Microparticles at an Air/Water Interface. Macromol Rapid Commun 2024:e2400604. [PMID: 39319683 DOI: 10.1002/marc.202400604] [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] [Indexed: 09/26/2024]
Abstract
In the previous study (Green Chem., 2023, 25, 3418), highly stretchable and mechanically tough poly(methyl acrylate) (pMA) microparticle-based elastomers can be formed by drying a microparticle-containing aqueous dispersion. This discovery has the potential to overcome the mechanical weakness of industrially produced aqueous latex films. However, in 3D-arranged particle films, structural complexity, such as the existence of defects, makes it difficult to clearly understand the relationship between the particle film structure and its mechanical properties. In this study, 2D-ordered pMA particle monolayers at the air/water interface of a Langmuir trough are prepared. Under high compression at the air/water interface, the microparticles contact their neighboring particles, and the resulting monolayers can be successfully transferred onto a solid substrate. The compression of the monolayer films is linked to an increase in the elastic modulus of the monolayer film on the solid substrate as evident from the local Young's modulus mapping using atomic force microscopy. Thus, pMA particle films with different mechanical properties can be created using a Langmuir trough.
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Affiliation(s)
- Yuma Sasaki
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano, 386-8567, Japan
| | - Yuichiro Nishizawa
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Natsuki Watanabe
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Aichi, Nagoya, 464-8602, Japan
| | - Takayuki Uchihashi
- Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Aichi, Nagoya, 464-8602, Japan
- Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Aichi, Okazaki, 444-8787, Japan
| | - Daisuke Suzuki
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
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211
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Balaj RV, Xue W, Bayati P, Mallory S, Zarzar LD. Dynamic Partitioning of Surfactants into Nonequilibrium Emulsion Droplets. J Am Chem Soc 2024; 146:26340-26350. [PMID: 39255056 DOI: 10.1021/jacs.4c08917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Characterizing the propensity of molecules to distribute between fluid phases is key to describing chemical concentrations in heterogeneous mixtures and the corresponding physiochemical properties of a system. Typically, partitioning is studied under equilibrium conditions. However, some mixtures form a single phase at equilibrium but exist in multiple phases when out-of-equilibrium, such as oil-in-water emulsion droplets stabilized by surfactants. Such droplets persist for extended times but ultimately disappear due to droplet dissolution and micellar solubilization. Consequently, equilibrium properties like oil-water partition coefficients may not accurately describe out-of-equilibrium droplets. This study investigates the partitioning of nonionic surfactants between shrinking microscale oil droplets and water under nonequilibrium conditions. Quantitative mass spectrometry is used to analyze the composition of individual microdroplets over time under conditions of varying surfactant composition, concentrations, and oil molecular structures. Within minutes, nonionic surfactants partition into oil droplets, reaching a nonequilibrium steady-state concentration that can be over an order of magnitude higher than that in the aqueous phase. As the droplets solubilize over hours, the surfactants are released back into water, leading to transiently high surfactant concentrations near the droplet-water interface and the formation of a microemulsion phase with a low interfacial tension. Introducing ionic surfactants that form mixed micelles with nonionic surfactants reduces partitioning. Based on this observation, stimuli-responsive ionic surfactants are used to modulate the nonionic surfactant partitioning and trigger reversible phase separation and mixing inside binary oil droplets. This study reveals generalizable nonequilibrium states and conditions experienced by solubilizing oil droplets that influence emulsion properties.
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Affiliation(s)
- Rebecca V Balaj
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Wangyang Xue
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Parvin Bayati
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Stewart Mallory
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Lauren D Zarzar
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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212
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Kichatov B, Korshunov A, Sudakov V. Chemical magnetism - surface force to move motors. Phys Chem Chem Phys 2024; 26:24542-24552. [PMID: 39268693 DOI: 10.1039/d4cp02537g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/17/2024]
Abstract
If redox reactions occur on the surface of a motor and a current loop arises, then in a non-uniform magnetic field, in addition to the usual magnetic force, such a motor will also be affected by a chemical magnetic force. The chemical magnetic force belongs to the class of surface forces. Here we analyze for the first time the properties of chemical magnets, which consist of three dissimilar metals, as well as the magnetic field generated by a chemical magnet using paramagnetic nanoparticles. The results of the study show that the chemical magnetic force depends on the concentration and type of electrolyte, the pH of the solution, the temperature, and the structure of the chemical magnet. The results obtained can contribute to the creation of devices where chemical energy is directly converted into kinetic energy of motion.
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Affiliation(s)
- Boris Kichatov
- Semenov Federal Research Central for Chemical Physics, Moscow, Russia.
| | - Alexey Korshunov
- Semenov Federal Research Central for Chemical Physics, Moscow, Russia.
| | - Vladimir Sudakov
- Semenov Federal Research Central for Chemical Physics, Moscow, Russia.
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213
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Marchetti A, Marelli E, Bergamaschi G, Lahtinen P, Paananen A, Linder M, Pigliacelli C, Metrangolo P. Nanocellulose-short peptide self-assembly for improved mechanical strength and barrier performance. J Mater Chem B 2024; 12:9229-9237. [PMID: 39176991 PMCID: PMC11342157 DOI: 10.1039/d4tb01359j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Accepted: 08/11/2024] [Indexed: 08/24/2024]
Abstract
Cellulose nanofibers (CNF) are the most abundant renewable nanoscale fibers on Earth, and their use in the design of hybrid materials is ever more acclaimed, although it has been mostly limited, to date, to CNF derivatives obtained via covalent functionalization. Herein, we propose a noncovalent approach employing a set of short peptides - DFNKF, DF(I)NKF, and DF(F5)NKF - as supramolecular additives to engineer hybrid hydrogels and films based on unfunctionalized CNF. Even at minimal concentrations (from 0.1% to 0.01% w/w), these peptides demonstrate a remarkable ability to enhance CNF rheological properties, increasing both dynamic moduli by more than an order of magnitude. Upon vacuum filtration of the hydrogels, we obtained CNF-peptide films with tailored hydrophobicity and surface wettability, modulated according to the peptide content and halogen type. Notably, the presence of fluorine in the CNF-DF(F5)NKF film, despite being minimal, strongly enhances CNF water vapor barrier properties and reduces the film water uptake. Overall, this approach offers a modular, straightforward method to create fully bio-based CNF-peptide materials, where the inclusion of DFNKF derivatives allows for facile functionalization and material property modulation, opening their potential use in the design of packaging solutions and biomedical devices.
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Affiliation(s)
- Alessandro Marchetti
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy.
| | - Elisa Marelli
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy.
| | - Greta Bergamaschi
- Istituto di Scienze e Tecnologie Chimiche, National Research Council of Italy, Via M. Bianco 9, 20131 Milano, Italy
| | - Panu Lahtinen
- VTT-Technical Research Centre of Finland Ltd, Tekniikantie 21, 02150 Espoo, Finland
| | - Arja Paananen
- VTT-Technical Research Centre of Finland Ltd, Tekniikantie 21, 02150 Espoo, Finland
| | - Markus Linder
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland
| | - Claudia Pigliacelli
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy.
| | - Pierangelo Metrangolo
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131 Milano, Italy.
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214
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Hernandez-Rodriguez G, Tenorio-Garcia E, Ettelaie R, Lishchuk SV, Harbottle D, Murray BS, Sarkar A. Demulsification of Pickering emulsions: advances in understanding mechanisms to applications. SOFT MATTER 2024; 20:7344-7356. [PMID: 39258321 DOI: 10.1039/d4sm00600c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Pickering emulsions are ultra-stable dispersions of two immiscible fluids stabilized by solid or microgel particles rather than molecular surfactants. Although their ultra-stability is a signature performance indicator, often such high stability hinders their demulsification, i.e., prevents the droplet coalescence that is needed for phase separation on demand, or release of the active ingredients encapsulated within droplets and/or to recover the particles themselves, which may be catalysts, for example. This review aims to provide theoretical and experimental insights on demulsification of Pickering emulsions, in particular identifying the mechanisms of particle dislodgment from the interface in biological and non-biological applications. Even though the adhesion of particles to the interface can appear irreversible, it is possible to detach particles via (1) alteration of particle wettability, and/or (2) particle dissolution, affecting the particle radius by introducing a range of physical conditions: pH, temperature, heat, shear, or magnetic fields; or via treatment with chemical/biochemical additives, including surfactants, enzymes, salts, or bacteria. Many of these changes ultimately influence the interfacial rheology of the particle-laden interface, which is sometimes underestimated. There is increasing momentum to create responsive Pickering particles such that they offer switchable wettability (demulsification and re-emulsification) when these conditions are changed. Demulsification via wettability alteration seems like the modus operandi whilst particle dissolution remains only partially explored, largely dominated by food digestion-related studies where Pickering particles are digested using gastrointestinal enzymes. Overall, this review aims to stimulate new thinking about the control of demulsification of Pickering emulsions for release of active ingredients associated with these ultra-stable emulsions.
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Affiliation(s)
- Gloria Hernandez-Rodriguez
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
- School of Chemical and Process Engineering, University of Leeds, UK
| | - Elizabeth Tenorio-Garcia
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
| | - Rammile Ettelaie
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
| | - Sergey V Lishchuk
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
- Thermodynamics and Process Engineering, Technische Universität Berlin, 10587 Berlin, Germany
| | - David Harbottle
- School of Chemical and Process Engineering, University of Leeds, UK
| | - Brent S Murray
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
| | - Anwesha Sarkar
- Food Colloids and Processing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
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215
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Zhang Q, Zhu E, Li T, Zhang L, Wang Z. High-Value Utilization of Cellulose: Intriguing and Important Effects of Hydrogen Bonding Interactions─A Mini-Review. Biomacromolecules 2024. [PMID: 39321123 DOI: 10.1021/acs.biomac.4c00823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Cellulose has been widely used in papermaking, textile, and chemical industries due to its diverse sources, environmental friendliness, and renewability. Recently, much more attention has been paid to converting cellulose into high-value-added products. Therefore, the extraction of nanocellulose, the dissolution of cellulose, and their applications are some of the most important research topics currently. However, cellulose's dense hydrogen bond network poses challenges for efficient extraction and dissolution, limiting its potential for functional material development. This review discusses the mechanisms of hydrogen bond disruption and weak interactions during nanocellulose extraction and cellulose dissolution. Key challenges and future research directions are highlighted, emphasizing developing efficient, ecofriendly, and cost-effective methods. Additionally, this review provides theoretical insights for constructing high-performance cellulose-based materials.
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Affiliation(s)
- Qing Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Enqing Zhu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Tianqi Li
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Lili Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhiguo Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
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216
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Chen Y, Li T, Jiang L, Huang Z, Zhang W, Luo Y. The composition, extraction, functional property, quality, and health benefits of coconut protein: A review. Int J Biol Macromol 2024; 280:135905. [PMID: 39332551 DOI: 10.1016/j.ijbiomac.2024.135905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Revised: 09/18/2024] [Accepted: 09/20/2024] [Indexed: 09/29/2024]
Abstract
Coconut is widely appreciated for its distinctive flavor and is commonly utilized in the production of a variety of goods. Coconut protein, a by-product derived from coconut oil and coconut milk cake, is frequently underutilized or discarded. This study provides a comprehensive overview of the distribution and composition of coconut protein. Analyses reveal that coconut protein, specifically 11S globulin and 7S globulin, is predominantly found in coconut flesh. Furthermore, various extraction techniques for coconut protein, such as chemical, enzymatic, and physical methods, are discussed. The alkali dissolution and acid precipitation methods are widely utilized for extracting coconut protein, with the potential for enhancement through the incorporation of physical methods such as ultrasound. The evaluation of functional properties, quality, and health benefits of coconut protein is essential, given the limitations imposed by its solubility. Modification may be necessary to optimize its functional properties. Coconut presents a promising source of food protein, characterized by balanced amino acid composition, high digestibility, and low allergenic potential. In conclusion, this study provides a comprehensive overview of the extraction methods, functional properties, quality, and nutritional benefits of coconut protein, offering insights for potential future research directions in the field. Additionally, the information presented may serve as a valuable reference for incorporating coconut protein into plant-based food products.
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Affiliation(s)
- Yang Chen
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, United States of America
| | - Tong Li
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Lianzhou Jiang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Zhaoxian Huang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Weimin Zhang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Hainan Institute for Food Control, Haikou 570228, China.
| | - Yangchao Luo
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, United States of America.
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217
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Pan Y, Zhao C, Wang R, Zhu M, Zhuang W, Li Q. Self-assembly of the imidazolium surfactant in aprotic ionic liquids. The anion effect of aprotic ionic liquids. SOFT MATTER 2024; 20:7420-7428. [PMID: 39258441 DOI: 10.1039/d4sm00699b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
The structure of ionic liquids (ILs) has an influence on their physiochemical properties, determining their performance as self-assembly media. In this study, we focus on the anion effect of aprotic ionic liquids (AILs). The aggregation behaviours of the cationic surfactant 1-hexadecyl-3-methylimidazolium bromide (C16mimBr) have been investigated in the imidazolium AILs with the 1-ethyl-3-methyl imidazolium cation and different anions, including nitrate, ethylsulfate, bis(trifluoromethylsulfonyl) imide and tetrafluoroborate. Surface adsorption parameters of C16mimBr were determined using surface tension measurements, and the critical micellization concentration values in AILs vary for their different cohesive energy. The micellar and lamellar lyotropic liquid crystal phases emerge with the increase of C16mimBr concentrations. The structure and properties of aggregates were determined using small angle X-ray scattering, polarized optical microscopy, rheology and differential scanning calorimetry. The anion effects of AILs on the phase behaviours and structure and properties of aggregates were analysed and discussed. The lamellar lyotropic liquid crystals have shown good conductivity, as confirmed by electrochemical impedance spectroscopy characterization. Our results enhance the understanding of the structure effect of ILs as self-assembly media and contribute to the design of tailorable solvents.
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Affiliation(s)
- Yue Pan
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China.
| | - Chunhua Zhao
- State Key Laboratory of Offshore Oil and Gas Exploitation, Beijing 100028, P. R. China
- CNOOC Research Institute Ltd, Beijing 100028, P. R. China
| | - Ruirui Wang
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China.
| | - Mingjie Zhu
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China.
| | - Wenchang Zhuang
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China.
| | - Qintang Li
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China.
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218
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Sadeghi N, Pable H, Khabaz F. Thermodynamics description of startup flow of soft particles glasses. SOFT MATTER 2024; 20:7387-7396. [PMID: 39254236 DOI: 10.1039/d4sm00514g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/11/2024]
Abstract
Particle dynamics simulations are used to study the startup flow of jammed soft particle suspensions in shear flow from a thermodynamic perspective. This thermodynamic framework is established using the concept of the two-body excess entropy extracted from the transient pair distribution function and elastic energy of the suspension as a function of strain at different shear rates and suspension volume fractions. Although the evolution of the elastic energy in these soft particle glasses closely mimics the stress-strain behavior at different shear rates and volume fractions, there are several differences corresponding to their overshoots in terms of the broadness and location of the peaks. The transient excess entropy shows an anisotropic behavior due to the anisotropic distribution of contacts at high shear rates. The excess entropy at high shear rates increases as a function of the strain and attains a steady state. On the other hand, it is nearly constant and isotropic in the quasi-static regime, where the stress response is close to the dynamic yield stress. Using the transient elastic energy and excess entropy, a transient temperature is defined to establish a relationship between thermodynamics and the static yield stress data. This transient temperature increases with the strain and then diverges at strains close to the static yield point at high shear rates.
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Affiliation(s)
- Nazanin Sadeghi
- School of Polymer Science and Polymer Engineering, The University of Akron, The United States, OH 44235, USA.
| | - Hrishikesh Pable
- School of Polymer Science and Polymer Engineering, The University of Akron, The United States, OH 44235, USA.
| | - Fardin Khabaz
- School of Polymer Science and Polymer Engineering, The University of Akron, The United States, OH 44235, USA.
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, The United States, OH 44235, USA
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219
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Tickner BJ, Singh K, Zhivonitko VV, Telkki VV. Ultrafast Nuclear Magnetic Resonance as a Tool to Detect Rapid Chemical Change in Solution. ACS PHYSICAL CHEMISTRY AU 2024; 4:453-463. [PMID: 39346603 PMCID: PMC11428446 DOI: 10.1021/acsphyschemau.4c00042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 07/17/2024] [Accepted: 07/17/2024] [Indexed: 10/01/2024]
Abstract
Ultrafast nuclear magnetic resonance (NMR) uses spatial encoding to record an entire two-dimensional data set in just a single scan. The approach can be applied to either Fourier-transform or Laplace-transform NMR. In both cases, acquisition times are significantly shorter than traditional 2D/Laplace NMR experiments, which allows them to be used to monitor rapid chemical transformations. This Perspective outlines the principles of ultrafast NMR and focuses on examples of its use to detect fast molecular conversions in situ with high temporal resolution. We discuss how this valuable tool can be applied in the future to study a much wider variety of novel reactivity.
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Affiliation(s)
- Ben. J. Tickner
- Department
of Chemistry, University of York, Heslington, York YO10
5NY, United Kingdom
| | - Kawarpal Singh
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EZ, United Kingdom
| | | | - Ville-Veikko Telkki
- NMR
Research Unit, Faculty of Science, University
of Oulu, Oulu 90570, Finland
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220
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Schilling J, Schmid J. Comprehensive rheological analysis of structurally related acetan-like heteroexopolysaccharides from two Kozakia baliensis strains in surfactants and galactomannan blends. N Biotechnol 2024; 82:75-84. [PMID: 38750817 DOI: 10.1016/j.nbt.2024.05.003] [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: 11/25/2023] [Revised: 05/05/2024] [Accepted: 05/06/2024] [Indexed: 05/19/2024]
Abstract
Natural biopolymers become increasingly attractive as bio-based alternatives to petrol-based rheological modifiers, especially in personal care applications. However, many polysaccharides exhibit undesired properties in cosmetic applications such as limited viscosifying characteristics, unpleasant sensory properties, or incompatibility with certain formulation compounds. Here, a comprehensive rheological analysis of non-decorated acetan-like heteroexopolysaccharides derived from two Kozakia baliensis strains was performed in selected surfactant formulations. The results were compared to native xanthan gum and a genetically engineered xanthan variant, Xan∆gumFGL, which lacks any acetyl- and pyruvyl moieties and whose rheological properties are unaffected by saline environments. All four polysaccharides displayed a highly similar rheological performance in the non-ionic surfactant lauryl glucoside, while the rheological properties differed in amphoteric and anionic surfactants cocamidopropyl betaine and sodium laureth sulfate due to minor changes in side chain composition. Polysaccharide precipitation was observed in the presence of the cationic surfactant. Nevertheless, the native heteroexopolysaccharide derived from K. baliensis LMG 27018 shows significant potential as a salt-independent rheological modifier compared to the genetically engineered Xan∆gumFGL variant. In addition, blends of heteroexopolysaccharides from K. baliensis and several galactomannans displayed synergistic effects which were comparable to native xanthan gum-galactomannan blends. This study shows that heteroexopolysaccharides of K. baliensis are capable of further extending the portfolio of bio-based rheological modifiers.
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Affiliation(s)
- Julia Schilling
- Institute for Molecular Microbiology and Biotechnology, University of Münster, Corrensstrasse 3, 48149 Münster, Germany
| | - Jochen Schmid
- Institute for Molecular Microbiology and Biotechnology, University of Münster, Corrensstrasse 3, 48149 Münster, Germany.
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221
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Archer PA, Heiler AJ, Bourque AR, Alapan Y, Thomas SN. Different leukocyte subsets are targeted by systemic and locoregional administration despite conserved nanomaterial characteristics optimal for lymph node delivery. Biomater Sci 2024. [PMID: 39318195 PMCID: PMC11422756 DOI: 10.1039/d4bm00910j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
Lymph nodes (LNs) house a large proportion of the body's leukocytes. Accordingly, engineered nanomaterials are increasingly developed to direct therapeutics to LNs to enhance their efficacy. Yet while lymphatic delivery of nanomaterials to LNs upon locoregional injection has been extensively evaluated, nanomaterial delivery to LN-localized leukocytes after intravenous administration has not been systematically explored nor benchmarked. In this work, a panel of inert, fluorescent nanoscale tracers and drug delivery vehicles were utilized to interrogate intravenous versus locoregionally administered nanomaterial access to LNs and leukocyte subsets therein. Hydrodynamic size and material effects on LN accumulation extents were similar between intravenous versus intradermal injection routes. Nanomaterial distribution to various LN leukocyte subsets differed substantially with injection route, however, in a manner not proportional to total LN accumulation. While intravenously administered nanomaterials accumulated in LNs lowly compared to systemic tissues, in sharp contrast to locoregional delivery, they exhibited size-dependent but material-independent access to immune cells within the LN parenchyma, which are not easily accessed with locoregional delivery.
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Affiliation(s)
- Paul A Archer
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, IBB 2310, 315 Ferst Drive NW, Atlanta, GA 30332, USA.
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Alexander J Heiler
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, IBB 2310, 315 Ferst Drive NW, Atlanta, GA 30332, USA.
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Alisyn R Bourque
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, IBB 2310, 315 Ferst Drive NW, Atlanta, GA 30332, USA.
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Yunus Alapan
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Susan N Thomas
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, IBB 2310, 315 Ferst Drive NW, Atlanta, GA 30332, USA.
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
- Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA
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222
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Papadopoulos E, Arrahmani BC, Beck K, Friess W. Lyso-phosphatidylcholine as an interfacial stabilizer for parenteral monoclonal antibody formulations. Eur J Pharm Biopharm 2024; 204:114514. [PMID: 39332745 DOI: 10.1016/j.ejpb.2024.114514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Revised: 09/16/2024] [Accepted: 09/21/2024] [Indexed: 09/29/2024]
Abstract
Therapeutic proteins suffer from physical and chemical instability in aqueous solution. Polysorbates and poloxamers are often added for protection against interfacial stress to prevent protein aggregation and particle formation. Previous studies have revealed that the hydrolysis and oxidation of polysorbates in parenteral formulations can lead to the formation of free fatty acid particles, insufficient long-term stabilization, and protein oxidation. Poloxamers, on the other hand, are considered to be less effective against protein aggregation. Here we investigated two lyso-phosphatidylcholines (LPCs) as potential alternative surfactants for protein formulations, focusing on their physicochemical behavior and their ability to protect against the formation of monoclonal antibody particles during mechanical stress. The hemolytic activity of LPC was tested in varying ratios of plasma and buffer mixtures. LPC effectively stabilized mAb formulations when shaken at concentrations several orders of magnitude below the onset of hemolysis, indicating that the potential for erythrocyte damage by LPC is non-critical. LPC formulations subjected to mechanical stress through peristaltic pumping exhibited comparable protein particle formation to those containing polysorbate 80 or poloxamer 188. Profile analysis tensiometry and dilatational rheology indicated that the stabilizing effect likely arises from the formation of a viscoelastic film at approximately the CMC. Data gathered from concentration-gradient multi-angle light scattering and isothermal titration calorimetry support this finding. Surfactant desorption was evaluated through sub-phase exchange experiments. While LPCs readily desorbed from the interface, resorption occurred rapidly enough in the bulk solution to prevent protein adsorption. Overall, LPCs behave similarly to polysorbate with respect to interfacial stabilization and show promise as a potential substitute for polysorbate in parenteral protein formulations.
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Affiliation(s)
- Eleni Papadopoulos
- Ludwig-Maximilians-Universität München, Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Butenandtstraße 5-13 B, 81377 Munich, Germany.
| | | | - Katharina Beck
- Albert-Ludwigs-Universität Freiburg, Department of Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, Hermann-Herder-Strasse 9, 79,104 Freiburg i. Br, Germany; Universität Augsburg, Department of Physiology, Institute of Theoretical Medicine, Universitätsstraße 2, 86159 Augsburg, Germany(1).
| | - Wolfgang Friess
- Ludwig-Maximilians-Universität München, Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Butenandtstraße 5-13 B, 81377 Munich, Germany.
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223
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Smith AD, Donley GJ, Del Gado E, Zavala VM. Topological Data Analysis for Particulate Gels. ACS NANO 2024. [PMID: 39321316 DOI: 10.1021/acsnano.4c04969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Soft gels, formed via the self-assembly of particulate materials, exhibit intricate multiscale structures that provide them with flexibility and resilience when subjected to external stresses. This work combines particle simulations and topological data analysis (TDA) to characterize the complex multiscale structure of soft gels. Our TDA analysis focuses on the use of the Euler characteristic, which is an interpretable and computationally scalable topological descriptor that is combined with filtration operations to obtain information on the geometric (local) and topological (global) structure of soft gels. We reduce the topological information obtained with TDA using principal component analysis (PCA) and show that this provides an informative low-dimensional representation of the gel structure. We use the proposed computational framework to investigate the influence of gel preparation (e.g., quench rate, volume fraction) on soft gel structure and to explore dynamic deformations that emerge under oscillatory shear in various response regimes (linear, nonlinear, and flow). Our analysis provides evidence of the existence of hierarchical structures in soft gels, which are not easily identifiable otherwise. Moreover, our analysis reveals direct correlations between topological changes of the gel structure under deformation and mechanical phenomena distinctive of gel materials, such as stiffening and yielding. In summary, we show that TDA facilitates the mathematical representation, quantification, and analysis of soft gel structures, extending traditional network analysis methods to capture both local and global organization.
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Affiliation(s)
- Alexander D Smith
- Department of Chemical Engineering and Material Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Gavin J Donley
- Department of Physics, Georgetown University, Washington, DC 20057, United States
| | - Emanuela Del Gado
- Department of Physics, Georgetown University, Washington, DC 20057, United States
- Institute for Soft Matter Synthesis and Metrology, Georgetown University, Washington DC 20057, United States
| | - Victor M Zavala
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Mathematics and Computer Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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224
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Wei X, Chang X, Hao J, Liu F, Duan P, Jia C, Guo X. In Situ Detection of Interfacial Ions at the Single-Bond Level. J Am Chem Soc 2024; 146:26095-26101. [PMID: 39262277 DOI: 10.1021/jacs.4c06738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
Detecting the ionic state at the solid-liquid interface is essential to reveal the various chemical and physical processes that occur at the interface. In this study, the adsorption states of the highly electronegative ions F- and OH- at the solid-liquid interface are detected by using the scanning tunneling microscopy break junction technique. With the active hydrogen atom of the amino group as a probe, the formed ionic hydrogen bonds are successfully detected, thereby enabling in situ monitoring of the ionic state at the solid-liquid interface. Through noise power spectral density analysis and theoretical simulations, we reveal the mechanism by which ionic hydrogen bonds at the interface affect the charge transport properties. In addition, we discover that the ionic state at the solid-liquid interface can be effectively manipulated by electric fields. Under high electric fields, the concentration of the anion near the electrode is higher, and the proportion of hydrogen bonds formed is greater than that under low electric fields. This study of the interfacial ionic state at the single-bond level provides guidance for the design of high-performance materials for energy conversion and environmental purification.
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Affiliation(s)
- Xiao Wei
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Microscale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Xinyue Chang
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Microscale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Jie Hao
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Microscale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Fengyi Liu
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Microscale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Ping Duan
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Microscale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Chuancheng Jia
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Microscale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Xuefeng Guo
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Microscale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, P. R. China
- Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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225
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Yang C, Liu X, Song X, Zhang L. Design and batch fabrication of anisotropic microparticles toward small-scale robots using microfluidics: recent advances. LAB ON A CHIP 2024; 24:4514-4535. [PMID: 39206574 DOI: 10.1039/d4lc00566j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Small-scale robots with shape anisotropy have garnered significant scientific interest due to their enhanced mobility and precise control in recent years. Traditionally, these miniature robots are manufactured using established techniques such as molding, 3D printing, and microfabrication. However, the advent of microfluidics in recent years has emerged as a promising manufacturing technology, capitalizing on the precise and dynamic manipulation of fluids at the microscale to fabricate various complex-shaped anisotropic particles. This offers a versatile and controlled platform, enabling the efficient fabrication of small-scale robots with tailored morphologies and advanced functionalities from the microfluidic-derived anisotropic microparticles at high throughput. This review highlights the recent advances in the microfluidic fabrication of anisotropic microparticles and their potential applications in small-scale robots. In this review, the term 'small-scale robots' broadly encompasses micromotors endowed with capabilities for locomotion and manipulation. Firstly, the fundamental strategies for liquid template formation and the methodologies for generating anisotropic microparticles within the microfluidic system are briefly introduced. Subsequently, the functionality of shape-anisotropic particles in forming components for small-scale robots and actuation mechanisms are emphasized. Attention is then directed towards the diverse applications of these microparticle-derived microrobots in a variety of fields, including pollution remediation, cell microcarriers, drug delivery, and biofilm eradication. Finally, we discuss future directions for the fabrication and development of miniature robots from microfluidics, shedding light on the evolving landscape of this field.
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Affiliation(s)
- Chaoyu Yang
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong 999077, China.
| | - Xurui Liu
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong 999077, China.
| | - Xin Song
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong 999077, China.
| | - Li Zhang
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong 999077, China.
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226
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Johnston LJ. Cellulose nanomaterial metrology: microscopy measurements. NANOSCALE 2024. [PMID: 39315456 DOI: 10.1039/d4nr02276a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
Cellulose nanomaterials are increasingly used for a wide variety of applications. Adequate characterization of these materials is required for quality control during production, to distinguish between materials synthesized by different methods, by different suppliers or from difference cellulose biomass sources, to facilitate development of applications and for regulatory purposes. Here we review recent microscopy measurements for the three main types of cellulose nanomaterials: cellulose nanocrystals, individual cellulose nanofibrils and cellulose nanofibrils. Atomic force microscopy and both scanning and transmission electron microscopy are covered with a focus on recent studies that have metrological rigor, rather than qualitative investigations. In some cases results are compared to those obtained by other methods that are more likely to see widespread use for routine quality control measurements. Detailed studies that use microscopy to provide insight on fundamental material properties (e.g., chiral properties) are also included. Particle size and morphology are important properties but are challenging to measure for cellulose nanomaterials due to the rod or fibril shaped particles, their propensity to agglomerate and aggregate, their low contrast for electron microscopy and, for cellulose nanofibrils, the complex branched and interconnected structures. Overall, the results show that there are now a number of studies in which attention to metrological detail has resulted in measurements that allow one to compare and distinguish between different materials, although there are still examples for which it is not possible to draw conclusions on size differences. The use of detailed microscopy protocols that yield accurate and reliable results will be beneficial in material production and addressing regulatory requirements and will allow the validation of other methods that are more amenable to routine measurements.
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Affiliation(s)
- Linda J Johnston
- Metrology Research Center, National Research Council Canada, Ottawa, ON, Canada K1A 0R6.
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227
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Rahman MZ, Wang X, Cai W, Song L, Fei B, Hu Y. Sustainable lignosulfonate-modified PA6.6 fabrics to improve durable flame retardancy, hydrophilicity and mechanical performance. Int J Biol Macromol 2024; 280:135952. [PMID: 39322161 DOI: 10.1016/j.ijbiomac.2024.135952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 08/28/2024] [Accepted: 09/21/2024] [Indexed: 09/27/2024]
Abstract
Creating durable flame retardancy, enhanced mechanical performance, and hydrophilic polyamide 6.6 (PA6.6) textiles via cost-effectiveness from sustainable renewable sources is a considerable challenge. This study introduces a pretreatment process involving the application of sodium lignosulfonate (LS) to the surface of PA6.6 fabrics, thereby enhancing their hydrophilic and flame-retardant properties. Subsequently, a layer-by-layer (LbL) nanocoating treatment is employed, utilizing renewable polyelectrolytes-chitosan (CS), LS, and poly (sodium phosphate) (PSP)-to create 8-bilayer (BL) and 4-quarda layer (QL) structures that further improve the hydrophilicity and durable flame resistance of PA6.6 fabrics. The combined LS-modified and LbL coatings notably increased the limiting oxygen index (LOI) values from 19.5 % to 22.5 %, eliminated melt dripping, and secured a V-1 rating in the vertical burning (UL-94) tests. Moreover, the treated fabrics exhibited a 43 % reduction in the peak heat release rate (PHRR) and a lower fire growth rate (FGR) of 0.84 W/g·s, with a significant increase in char yield% in both air and nitrogen (N2) atmospheres. A cross-linked network structure is responsible for the superior hydrophilicity, enhanced tensile strength, and fabric softening properties. The self-crosslinking of sulfur-containing radicals with amide units ensures an anti-dripping performance that can withstand up to 30 home laundering cycles, demonstrating remarkable washing durability. However, a convincing approach has been developed for sustainable and high-performance materials for the textile industry, and a simple LbL technique using renewable polyelectrolytes that have traditionally been utilized in water treatment and food processing has been developed.
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Affiliation(s)
- Mohammad Ziaur Rahman
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China; School of Fashion and Textiles, Hong Kong Polytechnic University, Kowloon 999077, Hong Kong Special Administrative Region of China
| | - Xin Wang
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Wei Cai
- School of Fashion and Textiles, Hong Kong Polytechnic University, Kowloon 999077, Hong Kong Special Administrative Region of China
| | - Lei Song
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Bin Fei
- School of Fashion and Textiles, Hong Kong Polytechnic University, Kowloon 999077, Hong Kong Special Administrative Region of China
| | - Yuan Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
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228
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Sharma VK, Srinivasan H, Gupta J, Mitra S. Lipid lateral diffusion: mechanisms and modulators. SOFT MATTER 2024. [PMID: 39315599 DOI: 10.1039/d4sm00597j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
The lateral diffusion of lipids within a membrane is of paramount importance, serving as a central mechanism in numerous physiological processes including cell signaling, membrane trafficking, protein activity regulation, and energy transduction pathways. This review offers a comprehensive overview of lateral lipid diffusion in model biomembrane systems explored through the lens of neutron scattering techniques. We examine diverse models of lateral diffusion and explore the various factors influencing this fundamental process in membrane dynamics. Additionally, we offer a thorough summary of how different membrane-active compounds, including drugs, antioxidants, stimulants, and membrane proteins, affect lipid lateral diffusion. Our analysis unveils the intricate interplay between these additives and membranes, shedding light on their dynamic interactions. We elucidate that this interaction is governed by a complex combination of multiple factors including the physical state and charge of the membrane, the concentration of additives, the molecular architecture of the compounds, and their spatial distribution within the membrane. In conclusion, we briefly discuss the future directions and areas requiring further investigation in the realm of lateral lipid diffusion, highlighting the need to study more realistic membrane systems.
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Affiliation(s)
- V K Sharma
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
- Homi Bhabha National Institute, Mumbai, 400094, India
| | - H Srinivasan
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
- Homi Bhabha National Institute, Mumbai, 400094, India
| | - J Gupta
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
- Homi Bhabha National Institute, Mumbai, 400094, India
| | - S Mitra
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
- Homi Bhabha National Institute, Mumbai, 400094, India
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229
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Tompkins FKT, Parker LG, Fogarty RM, Seymour JM, Gousseva E, Grinter DC, Palgrave RG, Smith CD, Bennett RA, Matthews RP, Lovelock KRJ. Controlling and predicting alkyl-onium electronic structure. Chem Commun (Camb) 2024; 60:10756-10759. [PMID: 39248075 DOI: 10.1039/d4cc03388d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/10/2024]
Abstract
X-ray photoelectron spectroscopy (XPS) and ab initio calculations show that fully alkylated onium cation electronic structure can be tuned using both the alkyl chains and the central onium atom. The key for tuning the central onium atom is methyl versus longer alkyl chains, allowing selection of the optimum cation for a wide range of applications, including catalysis and biocides.
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230
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Sharma N, Akmal MH, Yura R, Mousavi SM, Kurniawan D, Nonoguchi Y, Chiang WH. Tuning Nanographene-Enhanced Raman Scattering for Rapid Label-Free Detection of Amino Acids. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39316462 DOI: 10.1021/acsami.4c08298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
The rapid and sensitive detection of amino acids is important not only for fundamental studies but also for the establishment of a healthy society. However, conventional detection methods have been hampered by the difficulties of low sensitivity, long sampling and detection times, and expensive operation and instruments. Here, we report the plasma engineering of bioresource-derived graphene quantum dots (GQDs) as surface-enhanced Raman scattering (SERS)-active materials for the rapid and sensitive detection of amino acids. Surface-functionalized GQDs with tuned structures and band gaps were synthesized from earth-abundant bioresources by using reactive microplasmas under ambient conditions. Detailed microscopy and spectroscopy studies indicate that the SERS properties of the synthesized GQDs can be tuned by controlling the band gaps of synthesized GQDs. The plasma-synthesized metal-free GQDs with surface functionalities showed improved SERS properties for rapid amino acid detection with low detection limits of 10-5 M for tyrosine and phenylalanine. Theoretical calculations suggest that charge transfer between GQDs and amino acids can enhance the SERS response of the GQDs. Our work provides insights into the controlled engineering of SERS-active nanographene-based materials using the plasma-enhanced method.
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Affiliation(s)
- Neha Sharma
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Muhammad Hussnain Akmal
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Ryoto Yura
- Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Seyyed Mojtaba Mousavi
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Darwin Kurniawan
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Yoshiyuki Nonoguchi
- Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- Sustainable Electrochemical Energy Development (SEED) Center, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
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231
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Morimitsu Y, Browne CA, Liu Z, Severino PG, Gopinadhan M, Sirota EB, Altintas O, Edmond KV, Osuji CO. Spontaneous assembly of condensate networks during the demixing of structured fluids. Proc Natl Acad Sci U S A 2024; 121:e2407914121. [PMID: 39269770 PMCID: PMC11441503 DOI: 10.1073/pnas.2407914121] [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: 04/21/2024] [Accepted: 07/16/2024] [Indexed: 09/15/2024] Open
Abstract
Liquid-liquid phase separation, whereby two liquids spontaneously demix, is ubiquitous in industrial, environmental, and biological processes. While isotropic fluids are known to condense into spherical droplets in the binodal region, these dynamics are poorly understood for structured fluids. Here, we report the unique observation of condensate networks, which spontaneously assemble during the demixing of a mesogen from a solvent. Condensing mesogens form rapidly elongating filaments, rather than spheres, to relieve distortion of an internal smectic mesophase. As filaments densify, they collapse into bulged discs, lowering the elastic free energy. Additional distortion is relieved by retraction of filaments into the discs, which are straightened under tension to form a ramified network. Understanding and controlling these dynamics may provide different avenues to direct pattern formation or template materials.
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Affiliation(s)
- Yuma Morimitsu
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
| | - Christopher A. Browne
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
| | - Zhe Liu
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
| | - Paul G. Severino
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA19104
| | - Manesh Gopinadhan
- Research Division, ExxonMobil Technology and Engineering Company, Annandale, NJ08801
| | - Eric B. Sirota
- Research Division, ExxonMobil Technology and Engineering Company, Annandale, NJ08801
| | - Ozcan Altintas
- Research Division, ExxonMobil Technology and Engineering Company, Annandale, NJ08801
| | - Kazem V. Edmond
- Research Division, ExxonMobil Technology and Engineering Company, Annandale, NJ08801
| | - Chinedum O. Osuji
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
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232
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Wijegunawardhana D, Wijesekara I, Liyanage R, Truong T, Silva M, Chandrapala J. The Impact of Varying Lactose-to-Maltodextrin Ratios on the Physicochemical and Structural Characteristics of Pasteurized and Concentrated Skim and Whole Milk-Tea Blends. Foods 2024; 13:3016. [PMID: 39335944 PMCID: PMC11431367 DOI: 10.3390/foods13183016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2024] [Revised: 08/30/2024] [Accepted: 09/19/2024] [Indexed: 09/30/2024] Open
Abstract
This study investigates the impact of substituting lactose with maltodextrin in milk-tea formulations to enhance their physicochemical and structural properties. Various lactose-to-maltodextrin ratios (100:0, 90:10, 85:15, 80:20, 75:25) were evaluated in both post-pasteurized and concentrated skim milk-tea (SM-T) and whole milk-tea (WM-T) formulations. Concentration significantly improved the zeta potential, pH, and browning index in both SM-T and WM-T compared to pasteurization. L:M ratios of 90:10 and 75:25 in WM-T and 90:10 and 80:20 in SM-T showed higher phenolic preservation after concentration due to structural changes resulting from the addition of maltodextrin and water removal during prolonged heating. The preservation effect of phenolic components in both WM-T and SM-T is governed by many mechanisms including pH stabilization, zeta potential modulation, protein interactions, complex formation, and encapsulation effects. Therefore, optimizing milk-tea stability and phenolic preservation through L:M ratio adjustments provides a promising approach for enhancing milk-tea properties.
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Affiliation(s)
- Dilema Wijegunawardhana
- School of Science, STEM College, RMIT University, Bundoora, VIC 3083, Australia
- Department of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura, Dampe-Pitipana Road, Homagama 10200, Sri Lanka
| | - Isuru Wijesekara
- Department of Food Science and Technology, Faculty of Applied Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda 10250, Sri Lanka
| | - Rumesh Liyanage
- Department of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura, Dampe-Pitipana Road, Homagama 10200, Sri Lanka
| | - Tuyen Truong
- School of Science, STEM College, RMIT University, Bundoora, VIC 3083, Australia
- School of Science, Engineering & Technology, RMIT University, Ho Chi Minh City 700000, Vietnam
| | - Mayumi Silva
- School of Science, STEM College, RMIT University, Bundoora, VIC 3083, Australia
| | - Jayani Chandrapala
- School of Science, STEM College, RMIT University, Bundoora, VIC 3083, Australia
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233
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Kawate T, Wang Y, Chan K, Shibata N, Doi Y, Masubuchi Y, Zinchenko A. Polyion Hydrogels of Polymeric and Nanofibrous Carboxymethyl Cellulose and Chitosan: Mechanical Characteristics and Potential Use in Environmental Remediation. Gels 2024; 10:604. [PMID: 39330206 PMCID: PMC11431401 DOI: 10.3390/gels10090604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 09/11/2024] [Accepted: 09/19/2024] [Indexed: 09/28/2024] Open
Abstract
Recently, cellulose and other biomass nanofibers (NFs) have been increasingly utilized in the design of sustainable materials for environmental, biomedical, and other applications. However, the past literature lacks a comparison of the macromolecular and nanofibrous states of biopolymers in various materials, and the advantages and limitations of using nanofibers (NF) instead of conventional polymers are poorly understood. To address this question, hydrogels based on interpolyelectrolyte complexes (IPECs) between carboxymethyl cellulose nanofibers (CMCNFs) and chitosan (CS) were prepared by ele+ctrostatic cross-linking and compared with the hydrogels of carboxymethyl cellulose (CMC) and CS biopolymers. The presence of the rigid CMCNF altered the mechanism of the IPEC assembly and drastically affected the structure of IPEC hydrogels. The swelling ratios of CMCNF-CS hydrogels of ca. 40% were notably lower than the ca. 100-300% swelling of CMC-CS hydrogels. The rheological measurements revealed a higher storage modulus (G') of the CMCNF-CS hydrogel, reaching 13.3 kPa compared to only 3.5 kPa measured for the CMC-CS hydrogel. Further comparison of the adsorption characteristics of the CMCNF-CS and CMC-CS hydrogels toward Cu2+, Cd2+, and Hg2+ ions showed the slightly higher adsorption capacity of CMC-CS for Cu2+ but similar adsorption capacities for Cd2+ and Hg2+. The adsorption kinetics obeyed the pseudo-second-order adsorption model in both cases. Overall, while the replacement of CMC with CMCNF in hydrogel does not significantly affect the performance of such systems as adsorbents, CMCNF imparts IPEC hydrogel with higher stiffness and a frequency-independent loss (G″) modulus and suppresses the hydrogel swelling, so can be beneficial in practical applications that require stable performance under various dynamic conditions.
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Affiliation(s)
- Taisei Kawate
- Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan
| | - Yehao Wang
- Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan
| | - Kayee Chan
- Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan
| | - Nobuyuki Shibata
- Nagoya Municipal Industrial Research Institute, Nagoya 456-0058, Japan
| | - Yuya Doi
- Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa 992-8510, Japan
| | - Yuichi Masubuchi
- Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan
| | - Anatoly Zinchenko
- Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan
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234
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Koruk H, Rajagopal S. A Comprehensive Review on the Viscoelastic Parameters Used for Engineering Materials, Including Soft Materials, and the Relationships between Different Damping Parameters. SENSORS (BASEL, SWITZERLAND) 2024; 24:6137. [PMID: 39338881 PMCID: PMC11435754 DOI: 10.3390/s24186137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2024] [Revised: 09/12/2024] [Accepted: 09/20/2024] [Indexed: 09/30/2024]
Abstract
Although the physical properties of a structure, such as stiffness, can be determined using some statical tests, the identification of damping parameters requires a dynamic test. In general, both theoretical prediction and experimental identification of damping are quite difficult. There are many different techniques available for damping identification, and each method gives a different damping parameter. The dynamic indentation method, rheometry, atomic force microscopy, and resonant vibration tests are commonly used to identify the damping of materials, including soft materials. While the viscous damping ratio, loss factor, complex modulus, and viscosity are quite common to describe the damping of materials, there are also other parameters, such as the specific damping capacity, loss angle, half-power bandwidth, and logarithmic decrement, to describe the damping of various materials. Often, one of these parameters is measured, and the measured parameter needs to be converted into another damping parameter for comparison purposes. In this review, the theoretical derivations of different parameters for the description and quantification of damping and their relationships are presented. The expressions for both high damping and low damping are included and evaluated. This study is considered as the first comprehensive review article presenting the theoretical derivations of a large number of damping parameters and the relationships among many damping parameters, with a quantitative evaluation of accurate and approximate formulas. This paper could be a primary resource for damping research and teaching.
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Affiliation(s)
- Hasan Koruk
- Ultrasound and Underwater Acoustics Group, Department of Medical, Marine and Nuclear, National Physical Laboratory, Teddington, Middlesex TW11 0LW, UK;
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235
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Ireland N, Chen YH, Tsai CSJ. Potential Penetration of Engineered Nanoparticles under Practical Use of Protective Clothing Fabrics. ACS CHEMICAL HEALTH & SAFETY 2024; 31:393-403. [PMID: 39328503 PMCID: PMC11423406 DOI: 10.1021/acs.chas.4c00021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/29/2024] [Accepted: 07/10/2024] [Indexed: 09/28/2024]
Abstract
The commercial application of engineered nanoparticles (ENPs) has rapidly increased as their unique properties are useful to improve many products. ENPs, however, can pose a major health risk to workers through exposure routes such as inhalation and dermal contact. Research is lacking on the protective nature of lab coats when challenged with ENPs. This study investigated multiwalled carbon nanotubes (CNTs), carbon black (CB), and nano aluminum oxide (Al2O3) penetration through four types of lab coat fabrics (cotton, polypropylene, polyester cotton, and Tyvek). Penetration efficiency was determined with direct reading instruments. The front and back of contaminated fabric swatches were further assessed with microscopy analysis to determine fabric structure with contaminated and penetrated particle morphology and level of fabric contamination. Fabric thickness, porosity, structure, surface chemistry, and ENP characteristics such as shape, morphology, and hydrophobicity were assessed to determine the mechanisms behind particle capture on the four common fabrics. CNTs penetrated all fabrics significantly less than the other ENPs. CNT average penetration across all fabrics was 1.83% compared to 15.74 and 11.65% for CB and Al2O3, respectively. This can be attributed to their fiber shape and larger agglomerates than those of other ENPs. Tyvek fabric was found to be the most protective against CB and Al2O3 penetration, with an average penetration of 0.06 and 0.11%, respectively, while polypropylene was the least protective with an average penetration of 40.36 and 15.77%, respectively. Tyvek was the most nonporous fabric with a porosity of 0.50, as well as the most hydrophobic fabric, explaining the low penetration across all three ENPs. Polypropylene is the most porous fabric with a porosity of 0.77, making it the least protective against ENPs. We conclude that porosity, fabric structure, and thickness are more important fabric characteristics to consider when discussing particle penetration through protective clothing fabrics than surface chemistry.
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Affiliation(s)
- Natalie Ireland
- Department of Environmental
Health Sciences, Fielding School of Public Health, University of California, Los Angeles, California 90095, United States
| | - Yi-Hsuan Chen
- Department of Environmental
Health Sciences, Fielding School of Public Health, University of California, Los Angeles, California 90095, United States
| | - Candace Su-Jung Tsai
- Department of Environmental
Health Sciences, Fielding School of Public Health, University of California, Los Angeles, California 90095, United States
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236
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Hughes MDG, West D, Wurr R, Cussons S, Cook KR, Mahmoudi N, Head D, Brockwell DJ, Dougan L. Competition between cross-linking and force-induced local conformational changes determines the structure and mechanics of labile protein networks. J Colloid Interface Sci 2024; 678:1259-1269. [PMID: 39357245 DOI: 10.1016/j.jcis.2024.09.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2024] [Revised: 09/03/2024] [Accepted: 09/21/2024] [Indexed: 10/04/2024]
Abstract
Folded protein hydrogels are emerging as promising new materials for medicine and healthcare applications. Folded globular proteins can be modelled as colloids which exhibit site specific cross-linking for controlled network formation. However, folded proteins have inherent mechanical stability and unfolded in response to an applied force. It is not yet understood how colloidal network theory maps onto folded protein hydrogels and whether it models the impact of protein unfolding on network properties. To address this, we study a hybrid system which contains folded proteins (patchy colloids) and unfolded proteins (biopolymers). We use a model protein, bovine serum albumin (BSA), to explore network architecture and mechanics in folded protein hydrogels. We alter both the photo-chemical cross-linking reaction rate and the mechanical properties of the protein building block, via illumination intensity and redox removal of robust intra-protein covalent bonds, respectively. This dual approach, in conjunction with rheological and structural techniques, allows us to show that while reaction rate can 'fine-tune' the mechanical and structural properties of protein hydrogels, it is the force-lability of the protein which has the greatest impact on network architecture and rigidity. To understand these results, we consider a colloidal model which successfully describes the behaviour of the folded protein hydrogels but cannot account for the behaviour observed in force-labile hydrogels containing unfolded protein. Alternative models are needed which combine the properties of colloids (folded proteins) and biopolymers (unfolded proteins) in cross-linked networks. This work provides important insights into the accessible design space of folded protein hydrogels without the need for complex and costly protein engineering, aiding the development of protein-based biomaterials.
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Affiliation(s)
- Matt D G Hughes
- School of Physics and Astronomy, Faculty of Engineering and Physical Sciences, University of Leeds, UK
| | - Daniel West
- School of Physics and Astronomy, Faculty of Engineering and Physical Sciences, University of Leeds, UK
| | - Rebecca Wurr
- School of Physics and Astronomy, Faculty of Engineering and Physical Sciences, University of Leeds, UK; Department of Physics, King's College London, London, WC2R 2LS, UK
| | - Sophie Cussons
- Astbury Centre for Structural Molecular Biology, University of Leeds, UK; School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, UK
| | - Kalila R Cook
- School of Physics and Astronomy, Faculty of Engineering and Physical Sciences, University of Leeds, UK
| | - Najet Mahmoudi
- ISIS Neutron and Muon Spallation Source, STFC Rutherford Appleton Laboratory, Oxfordshire, UK
| | - David Head
- School of Computer Science, Faculty of Engineering and Physical Science, University of Leeds, UK
| | - David J Brockwell
- Astbury Centre for Structural Molecular Biology, University of Leeds, UK; School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, UK
| | - Lorna Dougan
- School of Physics and Astronomy, Faculty of Engineering and Physical Sciences, University of Leeds, UK; Astbury Centre for Structural Molecular Biology, University of Leeds, UK.
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237
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Teshima H, Fukunaga T, Li QY, Takahashi K. Precursor-film-driven ultra-early depinning of the three-phase contact line. J Colloid Interface Sci 2024; 678:1230-1238. [PMID: 39342868 DOI: 10.1016/j.jcis.2024.09.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 09/14/2024] [Accepted: 09/18/2024] [Indexed: 10/01/2024]
Abstract
HYPOTHESIS Despite its importance in colloid and interface science, contact line pinning remains poorly understood, especially in the presence of a precursor film. We hypothesized that this is due to a lack of an experimental method capable of directly observing their physics at the nanoscale. METHODS Using coherence scanning interferometry, we visualized the three-dimensional behavior of contact lines with a precursor film near a nanogroove structure composed of flat terrace surfaces and steps with an inclination angle of 30° while achieving nanoscale vertical resolution. FINDINGS We found that even when the contact line is pinned at the edge of the step, the precursor film is not and advances beyond the edge. Furthermore, we discovered that the precursor film has two distinct effects on contact line motion. Specifically, the precursor film facilitates depinning when the contact line descends the step - a contact angle change was 0.9°, only 3.0% of the value predicted by a classical theory of contact angle at a solid edge. This ultra-early depinning is attributed to the formation of a new liquid film past the edge, driven by the progression of the precursor film that overcomes the pinning effect. In contrast, when the contact line ascends the step, the precursor film acts as a resistance to movement due to steric interaction.
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Affiliation(s)
- Hideaki Teshima
- Department of Aeronautics and Astronautics, Kyushu University, Nishi-Ku, Motooka 744, Fukuoka 819-0395, Japan; International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Nishi-Ku, Motooka 744, Fukuoka 819-0395, Japan.
| | - Takanobu Fukunaga
- Technical Division, School of Engineering, Kyushu University, Nishi-Ku, Motooka 744, Fukuoka 819-0395, Japan
| | - Qin-Yi Li
- Department of Aeronautics and Astronautics, Kyushu University, Nishi-Ku, Motooka 744, Fukuoka 819-0395, Japan; International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Nishi-Ku, Motooka 744, Fukuoka 819-0395, Japan
| | - Koji Takahashi
- Department of Aeronautics and Astronautics, Kyushu University, Nishi-Ku, Motooka 744, Fukuoka 819-0395, Japan; International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Nishi-Ku, Motooka 744, Fukuoka 819-0395, Japan
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238
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Gostaviceanu A, Gavrilaş S, Copolovici L, Copolovici DM. Graphene-Oxide Peptide-Containing Materials for Biomedical Applications. Int J Mol Sci 2024; 25:10174. [PMID: 39337659 PMCID: PMC11432502 DOI: 10.3390/ijms251810174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2024] [Revised: 09/15/2024] [Accepted: 09/19/2024] [Indexed: 09/30/2024] Open
Abstract
This review explores the application of graphene-based materials (GBMs) in biomedicine, focusing on graphene oxide (GO) and its interactions with peptides and proteins. GO, a versatile nanomaterial with oxygen-containing functional groups, holds significant potential for biomedical applications but faces challenges related to toxicity and environmental impact. Peptides and proteins can be functionalized on GO surfaces through various methods, including non-covalent interactions such as π-π stacking, electrostatic forces, hydrophobic interactions, hydrogen bonding, and van der Waals forces, as well as covalent bonding through reactions involving amide bond formation, esterification, thiol chemistry, and click chemistry. These approaches enhance GO's functionality in several key areas: biosensing for sensitive biomarker detection, theranostic imaging that integrates diagnostics and therapy for real-time treatment monitoring, and targeted cancer therapy where GO can deliver drugs directly to tumor sites while being tracked by imaging techniques like MRI and photoacoustic imaging. Additionally, GO-based scaffolds are advancing tissue engineering and aiding tissues' bone, muscle, and nerve tissue regeneration, while their antimicrobial properties are improving infection-resistant medical devices. Despite its potential, addressing challenges related to stability and scalability is essential to fully harness the benefits of GBMs in healthcare.
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Affiliation(s)
- Andreea Gostaviceanu
- Institute for Interdisciplinary Research, Aurel Vlaicu University of Arad, Elena Drăgoi St., No. 2, 310330 Arad, Romania; (A.G.); (S.G.); (L.C.)
- Biomedical Sciences Doctoral School, University of Oradea, University St., No. 1, 410087 Oradea, Romania
| | - Simona Gavrilaş
- Institute for Interdisciplinary Research, Aurel Vlaicu University of Arad, Elena Drăgoi St., No. 2, 310330 Arad, Romania; (A.G.); (S.G.); (L.C.)
- Faculty of Food Engineering, Tourism and Environmental Protection, Aurel Vlaicu University of Arad, Elena Drăgoi St., No. 2, 310330 Arad, Romania
| | - Lucian Copolovici
- Institute for Interdisciplinary Research, Aurel Vlaicu University of Arad, Elena Drăgoi St., No. 2, 310330 Arad, Romania; (A.G.); (S.G.); (L.C.)
- Faculty of Food Engineering, Tourism and Environmental Protection, Aurel Vlaicu University of Arad, Elena Drăgoi St., No. 2, 310330 Arad, Romania
| | - Dana Maria Copolovici
- Institute for Interdisciplinary Research, Aurel Vlaicu University of Arad, Elena Drăgoi St., No. 2, 310330 Arad, Romania; (A.G.); (S.G.); (L.C.)
- Faculty of Food Engineering, Tourism and Environmental Protection, Aurel Vlaicu University of Arad, Elena Drăgoi St., No. 2, 310330 Arad, Romania
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239
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McKinnon Z, Khadra I, Halbert GW, Batchelor HK. Characterisation of colloidal structures and their solubilising potential for BCS class II drugs in fasted state simulated intestinal fluid. Int J Pharm 2024; 665:124733. [PMID: 39317247 DOI: 10.1016/j.ijpharm.2024.124733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 09/17/2024] [Accepted: 09/18/2024] [Indexed: 09/26/2024]
Abstract
A suite of fasted state simulated intestinal fluid (SIF), based on variability observed in a range of fasted state human intestinal fluid (HIF) samples was used to study the solubility of eight poorly soluble drugs (three acidic drugs (naproxen, indomethacin and phenytoin), two basic drugs (carvedilol and tadalafil) and three neutral drugs (felodipine, fenofibrate, griseofulvin)). Particle size of the colloidal structures formed in these SIF in the presence and absence of drugs was measured using dynamic light scattering and nanoparticle tracking analysis. Results indicate that drug solubility tends to increase with increasing total amphiphile concentration (TAC) in SIF with acidic drugs proving to be more soluble than basic or neutral drug in the media evaluated. Dynamic light scattering showed that as the amphiphile concentration increased, the hydrodynamic diameters of the structures decreased. The scattering distribution confirmed the polydispersity of the simulated intestinal fluids compared to the monodisperse distribution observed for FaSSIF v1). There was a large difference in the size of the structures found based on the composition of the SIF, for example, the diameter of the structures measured in felodipine in the minimum TAC media was measured to be 170 ± 5 nm which decreased to 5.1 ± 0.2 nm in the maximum TAC media point. The size measured of the colloidal structures of felodipine in the FaSSIF v1 was 86 ± 1 nm. However, there was no simple correlation between solubility and colloidal size. Nanoparticle tracking analysis was used for the first time to characterise colloidal structures within SIF and the results were compared to those obtained by dynamic light scattering. The particle size measured by dynamic light scattering was generally greater in media with a lower concentration of amphiphiles and smaller in media of a higher concentration of amphiphiles, compared to that of the data yielded by nanoparticle tracking analysis. This work shows that the colloidal structures formed vary depending on the composition of SIF which affects the solubility. Work is ongoing to determine the relationship between colloidal structure and solubility.
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Affiliation(s)
- Zoe McKinnon
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, United Kingdom
| | - Ibrahim Khadra
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, United Kingdom
| | - Gavin W Halbert
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, United Kingdom
| | - Hannah K Batchelor
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, United Kingdom.
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240
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Han Y, Zhu L, Zhang H, Liu T. Mechanism of sucrose improving the mechanical characteristics of foams stabilized by soy protein isolate/gellan gum/guar gum ternary complex. Int J Biol Macromol 2024; 280:135845. [PMID: 39313058 DOI: 10.1016/j.ijbiomac.2024.135845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 09/11/2024] [Accepted: 09/18/2024] [Indexed: 09/25/2024]
Abstract
Sucrose shows the potential of stabilizing foam system. This study systematically evaluated the mechanism by which sucrose improved foaming properties and mechanical characteristics of foams stabilized by soy protein isolate/gellan gum/guar gum ternary complex. Results showed that sucrose could bond to the surface of ternary complex or self-aggregate within the continuous phase, resulting in the neutralization of charges (nearly zero) and an increase in particle size (up to 62.54 μm). The addition of 30 % sucrose reinforced foam system with an increased foamability (305.99 %) but a longer foaming time (10 min) during foaming process. Moreover, the mechanical characteristics, including hardness, elastic strength (Power-law constant) and solid characteristic (frequency exponent), were also significantly enhanced to 1.26 N, 354.7956 and 2.5873, respectively, which were 1.65, 1.94 and 1.11 times than those of foams without sucrose. The microscopic mechanism lied in the reduced water freedom degree caused by sucrose, which generated a compact structural network around bubbles for providing a stable and stiff structure to foams. These findings will provide clear theoretical guidance for regulating mechanical characteristics of aerated foods by using sucrose as structural building blocks.
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Affiliation(s)
- Yameng Han
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Ling Zhu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Hui Zhang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Tongtong Liu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China; Binzhou Zhongyu Food Company Limited, Binzhou Zhongyu Academy of Agricultural Sciences, National Industry Technical Innovation Center for Wheat Processing, Binzhou 256603, Shandong, China; Bohai Advanced Technology Institute, Binzhou 256606, Shandong, China
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241
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Gonzalez-Vasquez AD, Hocine ES, Urzúa M, Rocha-Martin J, Fernandez-Lafuente R. Changes in ficin specificity by different substrate proteins promoted by enzyme immobilization. Enzyme Microb Technol 2024; 181:110517. [PMID: 39321567 DOI: 10.1016/j.enzmictec.2024.110517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2024] [Revised: 09/16/2024] [Accepted: 09/17/2024] [Indexed: 09/27/2024]
Abstract
Ficin extract has been immobilized using different supports: glyoxyl and Aspartic/1,6 hexamethylenediamine (Asp/HA) agarose beads. The latter was later submitted to glutaraldehyde modification to get covalent immobilization. The activities of these 3 kinds of biocatalysts were compared utilizing 4 different substrates, casein, hemoglobin and bovine serum albumin and benzoyl-arginine-p-nitroanilide at pH 7 and 5. Using glyoxyl-agarose, the effect of enzyme-support reaction time on the activity versus the four substrates at both pH values was studied. Reaction time has been shown to distort the enzyme due to an increase in the number of covalent support-enzyme bonds. Surprisingly, for all the substrates and conditions the prolongation of the enzyme-support reaction did not imply a decrease in enzyme activity. Using the Asp/HA supports (with different amount of HA) differences in the effect on enzyme activity versus the different substrates are much more significant, while with some substrates the immobilization produced a decrease in enzyme activity, with in other cases the activity increased. These different effects are even increased after glutaraldehyde treatment. That way, the conformational changes induced by the biocatalyst immobilization or the chemical modification fully altered the enzyme protein specificity. This may also have some implications when following enzyme inactivation.
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Affiliation(s)
- Alex D Gonzalez-Vasquez
- Departamento de Biocatalisis, ICP-CSIC, Campus UAM-CSIC, Madrid 28049, Spain; Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Casilla 653, Santiago, Ñuñoa 7800003, Chile
| | - El Siar Hocine
- Departamento de Biocatalisis, ICP-CSIC, Campus UAM-CSIC, Madrid 28049, Spain; Agri-food Engineering Laboratory (GENIAAL), Institute of Food, Nutrition and Agri-Food Technologies (INATAA), University of Brothers Mentouri Constantine 1, Algeria
| | - Marcela Urzúa
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Casilla 653, Santiago, Ñuñoa 7800003, Chile
| | - Javier Rocha-Martin
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Complutense University of Madrid, José Antonio Novais 12, Madrid 28040, Spain.
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242
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Ata K, Mineva T, Alonso B. Strength of London Dispersion Forces in Organic Structure Directing Agent-Zeolite Assemblies. Molecules 2024; 29:4489. [PMID: 39339483 PMCID: PMC11434474 DOI: 10.3390/molecules29184489] [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: 09/04/2024] [Revised: 09/13/2024] [Accepted: 09/17/2024] [Indexed: 09/30/2024] Open
Abstract
Herein, we study the London dispersion forces between organic structure directing agents (OSDAs)-here tetraalkyl-ammonium or -phosphonium molecules-and silica zeolite frameworks (FWs). We demonstrate that the interaction energy for these dispersion forces is correlated to the number of H atoms in OSDAs, irrespective of the structures of OSDAs or FWs, and of variations in charges and thermal motions. All calculations considered-DFT-D3 and BOMD undertaken by us, and molecular mechanics from an accessible database-led to the same trend. The mean energy of these dispersion forces is ca. -2 kcal.mol-1 per H for efficient H-O contacts.
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Affiliation(s)
- Karima Ata
- ICGM, Université de Montpellier, CNRS, ENSCM, CEDEX 05, 34293 Montpellier, France
| | - Tzonka Mineva
- ICGM, Université de Montpellier, CNRS, ENSCM, CEDEX 05, 34293 Montpellier, France
| | - Bruno Alonso
- ICGM, Université de Montpellier, CNRS, ENSCM, CEDEX 05, 34293 Montpellier, France
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243
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Nyamba I, Sombie CB, Yabre M, Zime-Diawara H, Yameogo J, Ouedraogo S, Lechanteur A, Semde R, Evrard B. Pharmaceutical approaches for enhancing solubility and oral bioavailability of poorly soluble drugs. Eur J Pharm Biopharm 2024:114513. [PMID: 39313163 DOI: 10.1016/j.ejpb.2024.114513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2024] [Revised: 09/15/2024] [Accepted: 09/20/2024] [Indexed: 09/25/2024]
Abstract
High solubility in water and physiological fluids is an indispensable requirement for the pharmacological efficacy of an active pharmaceutical ingredient. Indeed, it is well established that pharmaceutical substances exhibiting limited solubility in water are inclined towards diminished and inconsistent absorption following oral administration, consequently resulting in variability in therapeutic outcomes. The current advancements in combinatorial chemistry and pharmaceutical design have facilitated the creation of drug candidates characterized by increased lipophilicity, elevated molecular size, and reduced aqueous solubility. Undoubtedly, the issue of poorly water-soluble medications has been progressively escalating over recent years. Indeed, 40% of the top 200 oral medications marketed in the United States, 33% of drugs listed in the US pharmacopoeia, 75% of compounds under development and 90% of new chemical entities are insufficiently water-soluble compounds. In order to address this obstacle, formulation scientists employ a variety of approaches, encompassing both physical and chemical methods such as prodrug synthesis, salt formation, solid dispersions formation, hydrotropic substances utilization, solubilizing agents incorporation, cosolvent addition, polymorphism exploration, cocrystal creation, cyclodextrins complexation, lipid formulations, particle size reduction and nanoformulation techniques. Despite the utilization of these diverse approaches, the primary reason for the failure in new drug development persists as the poor aqueous solubility of pharmaceutical compounds. This paper, therefore, delves into the foundational principles that underpin the implementation of various formulation strategies, along with a discussion on the respective advantages and drawbacks associated with each approach. Additionally, a discourse is provided regarding methodological frameworks for making informed decisions on selecting an appropriate formulation strategy to effectively tackle the key challenges posed during the development of a poorly water-soluble drug candidate.
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Affiliation(s)
- Isaïe Nyamba
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Université de Liège, 4000 Liège, Belgium; Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso; Institut Supérieur des Sciences de la Santé (INSSA), Université Nazi Boni, 01 BP 1091 Bobo-Dioulasso 01, Burkina Faso.
| | - Charles B Sombie
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Moussa Yabre
- Institut Supérieur des Sciences de la Santé (INSSA), Université Nazi Boni, 01 BP 1091 Bobo-Dioulasso 01, Burkina Faso
| | - Hermine Zime-Diawara
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Josias Yameogo
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Salfo Ouedraogo
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Anna Lechanteur
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Université de Liège, 4000 Liège, Belgium
| | - Rasmané Semde
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Brigitte Evrard
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Université de Liège, 4000 Liège, Belgium
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244
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Tilve-Martinez D, Abomailek N, Lozano-Steinmetz F, Pendashteh A, Vilatela JJ. Silicon nanowire aqueous dispersions for processing into macroscopic network materials. Chem Commun (Camb) 2024; 60:10592-10595. [PMID: 39235285 DOI: 10.1039/d4cc02645d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
Nanowires and other high aspect ratio nanoparticles are building blocks to form network materials in formats such as films, sheets, fibres and electrodes that thus bridge the nano and macro scales. The assembly of nanowire network materials is enabled by a new floating catalyst chemical vapour deposition synthesis method that produces crystalline silicon nanowires (SiNW) on a scale of grams per day. Here, we produce SiNW dispersions in water by sonication through steric and electrostatic stabilisation of the negatively charged particles in basic pH or with cationic surfactants. Negative charge arises from the 1.3 nm-thin native oxide layer. Some permanent aggregates are found as a consequence of cross-links between the thin oxide at the surface of adjacent SiNWs. Removing them by centrifugation yields SiNW dispersions of 52 μg mL-1. Processing into macroscopic materials is demonstrated as transparent films and as freestanding sheets. In the sheets, the SiNWs are predominately aligned parallel to the sheet thickness, as a paper-like SiNW solid with tensile strength above 10 MPa, modulus above 1 GPa and toughness of 0.5 J g-1.
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Affiliation(s)
| | - Nabil Abomailek
- IMDEA Materials, Eric Kandel 2, Getafe 28906, Madrid, Spain
- Department of Applied Physics, Universidad Autónoma de Madrid, Cantoblanco, Madrid, 28049, Spain.
| | - Felipe Lozano-Steinmetz
- IMDEA Materials, Eric Kandel 2, Getafe 28906, Madrid, Spain
- Department of Applied Physics, Universidad Autónoma de Madrid, Cantoblanco, Madrid, 28049, Spain.
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245
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Lubitz LJ, Haffner MP, Rieger H, Leneweit G. Elevated Cellular Uptake of Succinimide- and Glucose-Modified Liposomes for Blood-Brain Barrier Transfer and Glioblastoma Therapy. Biomedicines 2024; 12:2135. [PMID: 39335648 PMCID: PMC11430759 DOI: 10.3390/biomedicines12092135] [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: 08/20/2024] [Revised: 09/03/2024] [Accepted: 09/06/2024] [Indexed: 09/30/2024] Open
Abstract
The uptake of four liposomal formulations was tested with the murine endothelial cell line bEnd.3 and the human glioblastoma cell line U-87 MG. All formulations were composed of DPPC, cholesterol, 5 mol% of mPEG (2000 Da, conjugated to DSPE), and the dye DiD. Three of the formulations had an additional PEG chain (nominally 5000 Da, conjugated to DSPE) with either succinimide (NHS), glucose (PEG-bound at C-6), or 4-aminophenyl β-D-glucopyranoside (bound at C-1) as ligands at the distal end. Measuring the uptake kinetics at 1 h and 3 h for liposomal incubation concentrations of 100 µM, 500 µM, and 1000 µM, we calculated the liposomal uptake saturation S and the saturation half-time t1/2. We show that only succinimide has an elevated uptake in bEnd.3 cells, which makes it a very promising and so far largely unexplored candidate for BBB transfer and brain cancer therapies. Half-times are uniform at low concentrations but diversify for high concentrations for bEnd.3 cells. Contrary, U-87 MG cells show almost identical saturations for all three ligands, making a uniform uptake mechanism likely. Only mPEG liposomes stay at 60% of the saturation for ligand-coated liposomes. Half-times are diverse at low concentrations but unify at high concentrations for U-87 MG cells.
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Affiliation(s)
- Larissa J Lubitz
- ABNOBA GmbH, 75223 Niefern-Öschelbronn, Germany
- Carl Gustav Carus-Institute,75223 Niefern-Öschelbronn, Germany
- Department of Chemical and Process Engineering, Institute of Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | | | - Harden Rieger
- ABNOBA GmbH, 75223 Niefern-Öschelbronn, Germany
- Carl Gustav Carus-Institute,75223 Niefern-Öschelbronn, Germany
| | - Gero Leneweit
- ABNOBA GmbH, 75223 Niefern-Öschelbronn, Germany
- Carl Gustav Carus-Institute,75223 Niefern-Öschelbronn, Germany
- Department of Chemical and Process Engineering, Institute of Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
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246
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Santra S, Molla MR. Small molecule-based core and shell cross-linked nanoassemblies: from self-assembly and programmed disassembly to biological applications. Chem Commun (Camb) 2024. [PMID: 39301871 DOI: 10.1039/d4cc03515a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
Supramolecular assemblies of stimuli-responsive amphiphilic molecules have been of utmost interest in targeted drug delivery applications, owing to their capability of sequestering drug molecules in one set of conditions and releasing them in another. To minimize undesired disassembly and stabilize noncovalently encapsulated drug molecules, the strategy of core or shell cross-linking has become a fascinating approach to constructing cross-linked polymeric or small molecule-based nanoassemblies. In this article, we discuss the design and synthetic strategies for cross-linked nanoassemblies from small molecule-based amphiphiles, with robust stability and enhanced drug encapsulation capability. We highlight their potential biomedical applications, particularly in drug or gene delivery, and cell imaging. This feature article offers a comprehensive overview of the recent developments in the application of small molecule-based covalently cross-linked nanocarriers for materials and biomedical applications, which may inspire the use of these materials as a potential drug delivery system for future chemotherapeutic applications.
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Affiliation(s)
- Subrata Santra
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India.
| | - Mijanur Rahaman Molla
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India.
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247
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Liu Z, Si Y, Yu C, Jiang L, Dong Z. Bioinspired superwetting oil-water separation strategy: toward the era of openness. Chem Soc Rev 2024. [PMID: 39302142 DOI: 10.1039/d4cs00673a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
Bioinspired superwetting oil-water separation strategies have received significant attention for their potential in addressing global water scarcity and aquatic pollution challenges. Over the past two decades, the field has rapidly developed, reaching a pivotal phase of innovation in the oil-water separation process. However, many groundbreaking studies have not received extensive scientific recognition. In this review, we systematically examine the application of bioinspired superwetting materials for complex multiscale oil-water separation. We discuss the development of 2D membrane filtration and 3D sponge adsorption materials in confined spaces, summarizing the core separation mechanisms, key research findings, and the evolutionary logic of these materials. Additionally, we highlight emerging open-space separation strategies, emphasizing several novel dynamic separation devices of significant importance. We evaluate and compare the design concepts, separation principles, materials used, comprehensive performance, and existing challenges of these diverse strategies. Finally, we summarize these advantages, critical bottlenecks, and prospects of this field and propose potential solutions for real oil-water separation processes from a general perspective.
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Affiliation(s)
- Zhuoxing Liu
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yifan Si
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong S.A.R 999077, China.
| | - Cunlong Yu
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Jiang
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu 215123, China
| | - Zhichao Dong
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu 215123, China
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248
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Shirian J, Hockla A, Gleba JJ, Coban M, Rotenberg N, Strik LM, Alasonyalilar Demirer A, Pawlush ML, Copland JA, Radisky ES, Shifman JM. Improving Circulation Half-Life of Therapeutic Candidate N-TIMP2 by Unfolded Peptide Extension. Biomolecules 2024; 14:1187. [PMID: 39334953 PMCID: PMC11429640 DOI: 10.3390/biom14091187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 09/16/2024] [Accepted: 09/17/2024] [Indexed: 09/30/2024] Open
Abstract
Matrix metalloproteinases (MMPs) are significant drivers of many diseases, including cancer, and are established targets for drug development. Tissue inhibitors of metalloproteinases (TIMPs) are endogenous MMP inhibitors and are being pursued for the development of anti-MMP therapeutics. TIMPs possess many attractive properties for drug candidates, such as complete MMP inhibition, low toxicity, low immunogenicity, and high tissue permeability. However, a major challenge with TIMPs is their rapid clearance from the bloodstream due to their small size. This study explores a method for extending the plasma half-life of the N-terminal domain of TIMP2 (N-TIMP2) by appending it with a long, intrinsically unfolded tail containing Pro, Ala, and Thr (PATylation). We designed and produced two PATylated N-TIMP2 constructs with tail lengths of 100 and 200 amino acids (N-TIMP2-PAT100 and N-TIMP2-PAT200). Both constructs demonstrated higher apparent molecular weights and retained high inhibitory activity against MMP-9. N-TIMP2-PAT200 significantly increased plasma half-life in mice compared to the non-PATylated variant, enhancing its therapeutic potential. PATylation offers distinct advantages for half-life extension, such as fully genetic encoding, monodispersion, and biodegradability. It can be easily applied to N-TIMP2 variants engineered for high affinity and selectivity toward individual MMPs, creating promising candidates for drug development against MMP-related diseases.
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Affiliation(s)
- Jason Shirian
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Alexandra Hockla
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, FL 32224, USA
| | - Justyna J Gleba
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, FL 32224, USA
| | - Matt Coban
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, FL 32224, USA
| | - Naama Rotenberg
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Laura M Strik
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, FL 32224, USA
| | | | - Matt L Pawlush
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, FL 32224, USA
| | - John A Copland
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, FL 32224, USA
| | - Evette S Radisky
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, FL 32224, USA
| | - Julia M Shifman
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
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249
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Almeida FS, da Silva AMM, Mendes GAC, Sato ACK, Cunha RL. Almond protein as Pickering emulsion stabilizer: Impact of microgel fabrication method and pH on emulsion stability. Int J Biol Macromol 2024; 280:135812. [PMID: 39306185 DOI: 10.1016/j.ijbiomac.2024.135812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2024] [Revised: 09/15/2024] [Accepted: 09/18/2024] [Indexed: 09/29/2024]
Abstract
We evaluated the ability of almond proteins to produce Pickering emulsions (EM) stabilized by microgels (MG) fabricated by three different methods (heat treatment-HT, crosslinking with transglutaminase-TG or calcium-CA), at two pH levels (pH 3 or 7). Compared to pH 7, acidic pH significantly denatured almond proteins (ellipticity ∼0 mdeg), decreased absolute zeta potential values (10.5 to 18.6 mV at pH 3 and - 24.6 to -32.6 mV at pH 7), and free thiol content (114.64-131.60 μmol SH/g protein at pH 3 and 129.46-148.17 μmol SH/g protein at pH 7 - except in CA-crosslinked microgels, p > 0.05). These changes led to larger microgel sizes (D3,2pH3: 26.3-39.5 μm vs. D3,2pH7: 5.9-9.0 μm) with lower polydispersity (SpanpH3: ∼ 1.94 vs. SpanpH7: 2.32, excluding CA-based samples). Consequently, the Turbiscan Stability Index (TSI) was higher in acidic conditions for all emulsions, except for the calcium-containing formulation (EM_CApH3), emphasizing the critical role of calcium binding in maintaining emulsion stability in acidic environments. Microgels prepared via the traditional heat treatment method produced emulsions with intermediate stability (TSI ranging from 3.4 % to 5.1 % at 28 days of storage). Conversely, TG-crosslinked microgels led to unstable emulsions at pH 3, likely due to the lowest zeta potential (+4.2 mV), whereas at pH 7, the greatest stability was attributed to bridging flocculation that created a stable gel-like structure. Indeed, emulsions with lower TSI (EM_CApH3 = 1.8 %, EM_CApH7 = 2.3 % and EM_TGpH7 = 1.0 %, at 28 days of storage) also exhibited higher elastic modulus (G') over frequency sweep, indicating that the strong elastic network was relevant for emulsion stability (up to 28 days). This study, for the first time, demonstrated the production of stable almond-based Pickering emulsions, with properties modulated by the pH and method used to fabricate the microgels.
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Affiliation(s)
- Flávia Souza Almeida
- Department of Food Engineering and Technology, School of Food Engineering, University of Campinas, UNICAMP, 13083-862 Campinas, Brazil
| | - Aurenice Maria Mota da Silva
- Department of Food Engineering and Technology, School of Food Engineering, University of Campinas, UNICAMP, 13083-862 Campinas, Brazil
| | - Gabriel Augusto Campos Mendes
- Department of Food Engineering and Technology, School of Food Engineering, University of Campinas, UNICAMP, 13083-862 Campinas, Brazil
| | - Ana Carla Kawazoe Sato
- Department of Food Engineering and Technology, School of Food Engineering, University of Campinas, UNICAMP, 13083-862 Campinas, Brazil
| | - Rosiane Lopes Cunha
- Department of Food Engineering and Technology, School of Food Engineering, University of Campinas, UNICAMP, 13083-862 Campinas, Brazil.
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250
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Schmid T, Kinner M, Stäheli L, Steinegger S, Hollenstein L, de la Gala D, Müller N. Effect of Press Cake-Based Particles on Quality and Stability of Plant Oil Emulsions. Foods 2024; 13:2969. [PMID: 39335896 PMCID: PMC11431225 DOI: 10.3390/foods13182969] [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: 08/15/2024] [Revised: 09/11/2024] [Accepted: 09/17/2024] [Indexed: 09/30/2024] Open
Abstract
Palm fat has uniquely optimal melting characteristics that are difficult to replace in products such as baked goods and chocolate-based items. This study investigates the efficacy of using Pickering emulsions derived from Swiss plant oils and their micromilled press cakes. Emulsification was carried out at both the lab and pilot scales using sunflower- and rapeseed-based recipes, with and without additional surfactants, for both oil-in-water and water-in-oil emulsions. The resulting emulsions were measured for viscosity and short- and long-term stability and linked to the properties of the raw materials. The results indicated that the contact angle, size, and macronutrient composition of the particles significantly impact emulsion quality, though differences in oil pressing methods might predominate these effects. The combination of particles and surfactants demonstrated a clear advantage with respect to interface stabilisation, with a suggested link between the wax content of the oil and particles and the resulting emulsion quality and stability.
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Affiliation(s)
- Tamara Schmid
- Zurich University of Applied Sciences, Institute of Food and Beverage Innovation, Einsiedlerstrasse 35, 8820 Wädenswil, Switzerland; (T.S.); (M.K.); (L.S.); (S.S.)
| | - Mathias Kinner
- Zurich University of Applied Sciences, Institute of Food and Beverage Innovation, Einsiedlerstrasse 35, 8820 Wädenswil, Switzerland; (T.S.); (M.K.); (L.S.); (S.S.)
| | - Luca Stäheli
- Zurich University of Applied Sciences, Institute of Food and Beverage Innovation, Einsiedlerstrasse 35, 8820 Wädenswil, Switzerland; (T.S.); (M.K.); (L.S.); (S.S.)
| | - Stefanie Steinegger
- Zurich University of Applied Sciences, Institute of Food and Beverage Innovation, Einsiedlerstrasse 35, 8820 Wädenswil, Switzerland; (T.S.); (M.K.); (L.S.); (S.S.)
| | - Lukas Hollenstein
- Zurich University of Applied Sciences, Institute of Computational Life Sciences, Schloss 4, 8820 Wädenswil, Switzerland; (L.H.); (D.d.l.G.)
| | - David de la Gala
- Zurich University of Applied Sciences, Institute of Computational Life Sciences, Schloss 4, 8820 Wädenswil, Switzerland; (L.H.); (D.d.l.G.)
| | - Nadina Müller
- Zurich University of Applied Sciences, Institute of Food and Beverage Innovation, Einsiedlerstrasse 35, 8820 Wädenswil, Switzerland; (T.S.); (M.K.); (L.S.); (S.S.)
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