51
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Functionalization of legume proteins using high pressure processing: Effect on technofunctional properties and digestibility of legume proteins. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113106] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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52
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Quantitative multivalent binding model of the structure, size distribution and composition of the casein micelles of cow milk. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2021.105292] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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53
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Kang K, Platten F. Electric-field induced modulation of amorphous protein aggregates: polarization, deformation, and reorientation. Sci Rep 2022; 12:3061. [PMID: 35197521 PMCID: PMC8866516 DOI: 10.1038/s41598-022-06995-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 02/09/2022] [Indexed: 11/09/2022] Open
Abstract
Proteins in their native state are only marginally stable and tend to aggregate. However, protein misfolding and condensation are often associated with undesired processes, such as pathogenesis, or unwanted properties, such as reduced biological activity, immunogenicity, or uncontrolled materials properties. Therefore, controlling protein aggregation is very important, but still a major challenge in various fields, including medicine, pharmacology, food processing, and materials science. Here, flexible, amorphous, micron-sized protein aggregates composed of lysozyme molecules reduced by dithiothreitol are used as a model system. The preformed amorphous protein aggregates are exposed to a weak alternating current electric field. Their field response is followed in situ by time-resolved polarized optical microscopy, revealing field-induced deformation, reorientation and enhanced polarization as well as the disintegration of large clusters of aggregates. Small-angle dynamic light scattering was applied to probe the collective microscopic dynamics of amorphous aggregate suspensions. Field-enhanced local oscillations of the intensity auto-correlation function are observed and related to two distinguishable elastic moduli. Our results validate the prospects of electric fields for controlling protein aggregation processes.
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Affiliation(s)
- Kyongok Kang
- Forschungszentrum Jülich, Institute of Biological Information Processing IBI-4, Biomacromolecular Systems and Processes, Jülich, Germany.
| | - Florian Platten
- Forschungszentrum Jülich, Institute of Biological Information Processing IBI-4, Biomacromolecular Systems and Processes, Jülich, Germany.
- Condensed Matter Physics Laboratory, Heinrich Heine University, Düsseldorf, Germany.
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54
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Han Q, Brown SJ, Drummond CJ, Greaves TL. Protein aggregation and crystallization with ionic liquids: Insights into the influence of solvent properties. J Colloid Interface Sci 2022; 608:1173-1190. [PMID: 34735853 DOI: 10.1016/j.jcis.2021.10.087] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/13/2021] [Accepted: 10/15/2021] [Indexed: 12/13/2022]
Abstract
Ionic liquids (ILs) have been used in solvents for proteins in many applications, including biotechnology, pharmaceutics, and medicine due to their tunable physicochemical and biological properties. Protein aggregation is often undesirable, and predominantly occurs during bioprocesses, while the aggregation process can be reversible or irreversible and the aggregates formed can be native/non-native and soluble/insoluble. Recent studies have clearly identified key properties of ILs and IL-water mixtures related to protein performance, suggesting the use of the tailorable properties of ILs to inhibit protein aggregation, to promote protein crystallization, and to control protein aggregation pathways. This review discusses the critical properties of IL and IL-water mixtures and presents the latest understanding of the protein aggregation pathways and the development of IL systems that affect or control the protein aggregation process. Through this feature article, we hope to inspire further advances in understanding and new approaches to controlling protein behavior to optimize bioprocesses.
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Affiliation(s)
- Qi Han
- School of Science, STEM College, RMIT University, 124 La Trobe Street, Melbourne, VIC 3000, Australia
| | - Stuart J Brown
- School of Science, STEM College, RMIT University, 124 La Trobe Street, Melbourne, VIC 3000, Australia
| | - Calum J Drummond
- School of Science, STEM College, RMIT University, 124 La Trobe Street, Melbourne, VIC 3000, Australia
| | - Tamar L Greaves
- School of Science, STEM College, RMIT University, 124 La Trobe Street, Melbourne, VIC 3000, Australia.
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55
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Nian Y, Zhang Y, Ruan C, Hu B. Update of the interaction between polyphenols and amyloid fibrils. Curr Opin Food Sci 2022. [DOI: 10.1016/j.cofs.2021.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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56
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Designing delivery systems for functional ingredients by protein/polysaccharide interactions. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2021.12.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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57
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Hu B, Li M, He X, Wang H, Huang JA, Liu Z, Mezzenga R. Flavonoid-Amyloid Fibril Hybrid Hydrogels for Obesity Control via Construction of Gut Microbiota. Biomater Sci 2022; 10:3597-3611. [DOI: 10.1039/d2bm00366j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Innovative precise clinical approaches to protect humans from the alarming global growth of epidemics of chronic diseases, such as metabolic syndrome (MetS), are urgently needed. Here, we introduce protein hydrogels...
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58
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Kasai T, Wada T, Iijima T, Minami Y, Sakaguchi T, Koga R, Shiratori T, Otsuka Y, Shimada Y, Okayama Y, Goto S. Comparative study of the hydrophobic interaction effect of pH and ionic strength on aggregation/emulsification of Congo red and amyloid fibrillation of insulin. BBA ADVANCES 2022; 2:100036. [PMID: 37082585 PMCID: PMC10074904 DOI: 10.1016/j.bbadva.2021.100036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 11/29/2021] [Accepted: 12/14/2021] [Indexed: 11/19/2022] Open
Abstract
Amyloid fibrillation is provoked by the conformational rearrangement of its source. In our previous study, we claimed that the conformational rearrangement of hen egg white lysozyme requires intermolecular aggregation/packing induced. Our proposed causality of the aggregation and amyloid formation was demonstrated by the quantitative dependence of amyloid fibrillation on pH difference from its isoelectric point (pI) and on the square root of ionic strength in order to reduce the intermolecular repulsion due to the shielding effect of electrolytes (DLVO effect). When Congo red has dianionic form at the pH higher than its pKa, it forms ribbon-like micelle colloids under lower ionic strength, while it loses electrostatic repulsion and aggregates to be emulsified in the octanolic phase under the higher ionic strength. These behaviors of Congo red were resembling to molecular assembly of surfactants. In contrast, the amyloid formation of insulin was proportional to the square root of ionic strength at the pH lower than its isoelectric point. Therefore, the trigger for conformational rearrangement of amyloid fibrillation is predominantly gripped by hydrophobic hydration and an electrostatic shielding effect. We concluded that the both behaviors of Congo red and insulin were derived from a driving force related to the hydrophobic hydration.
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Affiliation(s)
- Takahiro Kasai
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Takashi Wada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Tsubasa Iijima
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yoshiko Minami
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Tomoyo Sakaguchi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Ryotaro Koga
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Tomoki Shiratori
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yuta Otsuka
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yohsuke Shimada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yukiko Okayama
- School of Pharmacy, International University of Health and Welfare, 26001-1 Kita-kanemaru, Ohtawara, Tochigi 236-8501, Japan
| | - Satoru Goto
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- School of Pharmacy, International University of Health and Welfare, 26001-1 Kita-kanemaru, Ohtawara, Tochigi 236-8501, Japan
- Corresponding author.
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59
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Gomes A, Sobral PJDA. Plant Protein-Based Delivery Systems: An Emerging Approach for Increasing the Efficacy of Lipophilic Bioactive Compounds. Molecules 2021; 27:60. [PMID: 35011292 PMCID: PMC8746547 DOI: 10.3390/molecules27010060] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 12/17/2022] Open
Abstract
The development of plant protein-based delivery systems to protect and control lipophilic bioactive compound delivery (such as vitamins, polyphenols, carotenoids, polyunsaturated fatty acids) has increased interest in food, nutraceutical, and pharmaceutical fields. The quite significant ascension of plant proteins from legumes, oil/edible seeds, nuts, tuber, and cereals is motivated by their eco-friendly, sustainable, and healthy profile compared with other sources. However, many challenges need to be overcome before their widespread use as raw material for carriers. Thus, modification approaches have been used to improve their techno-functionality and address their limitations, aiming to produce a new generation of plant-based carriers (hydrogels, emulsions, self-assembled structures, films). This paper addresses the advantages and challenges of using plant proteins and the effects of modification methods on their nutritional quality, bioactivity, and techno-functionalities. Furthermore, we review the recent progress in designing plant protein-based delivery systems, their main applications as carriers for lipophilic bioactive compounds, and the contribution of protein-bioactive compound interactions to the dynamics and structure of delivery systems. Expressive advances have been made in the plant protein area; however, new extraction/purification technologies and protein sources need to be found Their functional properties must also be deeply studied for the rational development of effective delivery platforms.
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Affiliation(s)
- Andresa Gomes
- Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635-900, Brazil
- Food Research Center (FoRC), University of São Paulo, Rua do Lago, 250, Semi-Industrial Building, Block C, São Paulo 05508-080, Brazil
| | - Paulo José do Amaral Sobral
- Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13635-900, Brazil
- Food Research Center (FoRC), University of São Paulo, Rua do Lago, 250, Semi-Industrial Building, Block C, São Paulo 05508-080, Brazil
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60
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Schmitt C, Bovetto L, Buczkowski J, De Oliveira Reis G, Pibarot P, Amagliani L, Dombrowski J. Plant proteins and their colloidal state. Curr Opin Colloid Interface Sci 2021. [DOI: 10.1016/j.cocis.2021.101510] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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61
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Bergfreund J, Bertsch P, Fischer P. Effect of the hydrophobic phase on interfacial phenomena of surfactants, proteins, and particles at fluid interfaces. Curr Opin Colloid Interface Sci 2021. [DOI: 10.1016/j.cocis.2021.101509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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62
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Drusch S, Klost M, Kieserling H. Current knowledge on the interfacial behaviour limits our understanding of plant protein functionality in emulsions. Curr Opin Colloid Interface Sci 2021. [DOI: 10.1016/j.cocis.2021.101503] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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63
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Ramamirtham S, Whitby CP, Zare D, Weeks M, Williams MA. The rheological properties of bovine β-Lactoglobulin stabilized oil/water interfaces depend on the protein's quaternary structure. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106834] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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64
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65
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Gravelle AJ, Marangoni AG. A new fractal structural-mechanical theory of particle-filled colloidal networks with heterogeneous stress translation. J Colloid Interface Sci 2021; 598:56-68. [PMID: 33894617 DOI: 10.1016/j.jcis.2021.03.180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 10/21/2022]
Abstract
This work addresses the role of rigid inclusions in determining the elastic modulus of particle-filled colloidal networks by modifying an established fractal scaling model. The approach acknowledges the heterogeneous nature of stress distribution at length scales beyond the colloidal aggregates, while maintaining structural information at the level of individual clusters. This was achieved by introducing a scaling factor to account for system heterogeneity which contains intrinsic information about the network's capacity to form load-bearing links. Rigid fillers bound to the network induce stress concentration, but additionally serve as junction zones which introduce additional load-bearing pathways. This gives rise to the observed increase in the modulus with filler volume fraction. The proposed relationship between the load-bearing network connectivity and scaling behavior may have additional implications on the fractal dimension determined by rheological methods. Further, this model accommodates an experimentally observed correlation between the scaling behavior of the modulus associated with the addition of fillers and that arising from increasing structurant concentration. The modified fractal model thus provides an alternative view of how fillers contribute to the small- and large-deformation mechanical behavior of filled colloidal gels in a manner consistent with experimental observations.
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Affiliation(s)
- Andrew J Gravelle
- Department of Food Science, University of Guelph, Guelph, ON N1G 2W1, Canada.
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66
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Modification approaches of plant-based proteins to improve their techno-functionality and use in food products. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106789] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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67
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Jiao X, Yan B, Huang J, Zhao J, Zhang H, Chen W, Fan D. Redox Proteomic Analysis Reveals Microwave-Induced Oxidation Modifications of Myofibrillar Proteins from Silver Carp ( Hypophthalmichthys molitrix). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:9706-9715. [PMID: 34342990 DOI: 10.1021/acs.jafc.1c03045] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
To provide an insight into the oxidation behavior of cysteines in myofibrillar proteins (MPs) during microwave heating (MW), a quantitative redox proteomic analysis based on the isobaric iodoacetyl tandem mass tag technology was applied in this study. MPs from silver carp muscles were subjected to MW and water bath heating (WB) with the same time-temperature profiles to eliminate the thermal differences caused by an uneven energy input. Altogether, 422 proteins were found to be differentially expressed after thermal treatments as compared to that with no heat treatment. However, MW triggered a larger number of proteins and cysteine sites for oxidation. Myosin heavy chain, myosin-binding protein C, nebulin, α-actinin-3-like, and titin were found to be highly susceptible to oxidation under microwave irradiation. Notably, MW caused such modifications at cysteine site 9 in the head of myosin, revealing the enhancement mechanism of MP gelation by excess cysteine cross-linking during microwave processing. Furthermore, Gene Ontology and functional enrichment analyses suggested that the two thermal treatments resulted in some differences in ion binding, muscle cell development, and protein-containing complex assembly. Overall, this study is the first to report the redox proteomic changes caused by MW and WB treatments, thus providing a further understanding of the microwave-induced oxidative modifications of MPs.
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Affiliation(s)
- Xidong Jiao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Bowen Yan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jianlian Huang
- Key Laboratory of Refrigeration and Conditioning Aquatic Products Processing, Ministry of Agriculture and Rural Affairs, Xiamen 361022, China
- Fujian Provincial Key Laboratory of Refrigeration and Conditioning Aquatic Products Processing, Xiamen 361022, China
- Fujian Anjoy Food Share Co. Ltd., Xiamen 361022, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Daming Fan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Refrigeration and Conditioning Aquatic Products Processing, Ministry of Agriculture and Rural Affairs, Xiamen 361022, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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68
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Giron CC, Laaksonen A, Barroso da Silva FL. Up State of the SARS-COV-2 Spike Homotrimer Favors an Increased Virulence for New Variants. FRONTIERS IN MEDICAL TECHNOLOGY 2021; 3:694347. [PMID: 35047936 PMCID: PMC8757851 DOI: 10.3389/fmedt.2021.694347] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/31/2021] [Indexed: 12/23/2022] Open
Abstract
The COVID-19 pandemic has spread worldwide. However, as soon as the first vaccines-the only scientifically verified and efficient therapeutic option thus far-were released, mutations combined into variants of SARS-CoV-2 that are more transmissible and virulent emerged, raising doubts about their efficiency. This study aims to explain possible molecular mechanisms responsible for the increased transmissibility and the increased rate of hospitalizations related to the new variants. A combination of theoretical methods was employed. Constant-pH Monte Carlo simulations were carried out to quantify the stability of several spike trimeric structures at different conformational states and the free energy of interactions between the receptor-binding domain (RBD) and angiotensin-converting enzyme II (ACE2) for the most worrying variants. Electrostatic epitopes were mapped using the PROCEEDpKa method. These analyses showed that the increased virulence is more likely to be due to the improved stability to the S trimer in the opened state, in which the virus can interact with the cellular receptor, ACE2, rather than due to alterations in the complexation RBD-ACE2, since the difference observed in the free energy values was small (although more attractive in general). Conversely, the South African/Beta variant (B.1.351), compared with the SARS-CoV-2 wild type (wt), is much more stable in the opened state with one or two RBDs in the up position than in the closed state with three RBDs in the down position favoring the infection. Such results contribute to understanding the natural history of disease and indicate possible strategies for developing new therapeutic molecules and adjusting the vaccine doses for higher B-cell antibody production.
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Affiliation(s)
- Carolina Corrêa Giron
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
- Hospital de Clínicas, Universidade Federal do Triângulo Mineiro, Uberaba, Brazil
| | - Aatto Laaksonen
- Arrhenius Laboratory, Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden
- State Key Laboratory of Materials-Oriented and Chemical Engineering, Nanjing Tech University, Nanjing, China
- Centre of Advanced Research in Bionanoconjugates and Biopolymers, Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania
- Division of Energy Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, Luleå, Sweden
| | - Fernando Luís Barroso da Silva
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, United States
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69
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Kamada A, Rodriguez-Garcia M, Ruggeri FS, Shen Y, Levin A, Knowles TPJ. Controlled self-assembly of plant proteins into high-performance multifunctional nanostructured films. Nat Commun 2021; 12:3529. [PMID: 34112802 PMCID: PMC8192951 DOI: 10.1038/s41467-021-23813-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 04/21/2021] [Indexed: 02/05/2023] Open
Abstract
The abundance of plant-derived proteins, as well as their biodegradability and low environmental impact make them attractive polymeric feedstocks for next-generation functional materials to replace current petroleum-based systems. However, efforts to generate functional materials from plant-based proteins in a scalable manner have been hampered by the lack of efficient methods to induce and control their micro and nanoscale structure, key requirements for achieving advantageous material properties and tailoring their functionality. Here, we demonstrate a scalable approach for generating mechanically robust plant-based films on a metre-scale through controlled nanometre-scale self-assembly of water-insoluble plant proteins. The films produced using this method exhibit high optical transmittance, as well as robust mechanical properties comparable to engineering plastics. Furthermore, we demonstrate the ability to impart nano- and microscale patterning into such films through templating, leading to the formation of hydrophobic surfaces as well as structural colour by controlling the size of the patterned features.
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Affiliation(s)
- Ayaka Kamada
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Marc Rodriguez-Garcia
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
- Xampla Ltd, Cambridge, UK
| | - Francesco Simone Ruggeri
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
- Laboratory of Organic Chemistry, Wageningen University, Wageningen, The Netherlands
- Laboratory of Physical Chemistry, Wageningen University, Wageningen, The Netherlands
| | - Yi Shen
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, NSW, Australia
| | - Aviad Levin
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Tuomas P J Knowles
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
- Cavendish Laboratory, University of Cambridge, Cambridge, UK.
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70
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McClements DJ, Grossmann L. The science of plant-based foods: Constructing next-generation meat, fish, milk, and egg analogs. Compr Rev Food Sci Food Saf 2021; 20:4049-4100. [PMID: 34056859 DOI: 10.1111/1541-4337.12771] [Citation(s) in RCA: 153] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 02/06/2023]
Abstract
Consumers are increasingly demanding foods that are more ethical, sustainable and nutritious to improve the health of themselves and the planet. The food industry is currently undergoing a revolution, as both small and large companies pivot toward the creation of a new generation of plant-based products to meet this consumer demand. In particular, there is an emphasis on the production of plant-based foods that mimic those that omnivores are familiar with, such as meat, fish, egg, milk, and their products. The main challenge in this area is to simulate the desirable appearance, texture, flavor, mouthfeel, and functionality of these products using ingredients that are isolated entirely from botanical sources, such as proteins, carbohydrates, and lipids. The molecular, chemical, and physical properties of plant-derived ingredients are usually very different from those of animal-derived ones. It is therefore critical to understand the fundamental properties of plant-derived ingredients and how they can be assembled into structures resembling those found in animal products. This review article provides an overview of the current status of the scientific understanding of plant-based foods and highlights areas where further research is required. In particular, it focuses on the chemical, physical, and functional properties of plant-derived ingredients; the processing operations that can be used to convert these ingredients into food products; and, the science behind the formulation of vegan meat, fish, eggs, and milk alternatives.
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Affiliation(s)
| | - Lutz Grossmann
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts, USA
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71
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Holt C. A quantitative calcium phosphate nanocluster model of the casein micelle: the average size, size distribution and surface properties. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2021; 50:847-866. [PMID: 33866398 DOI: 10.1007/s00249-021-01533-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/22/2021] [Accepted: 03/28/2021] [Indexed: 10/21/2022]
Abstract
Caseins (αS1, αS2, β and κ) are the main protein fraction of bovine milk. Together with nanoclusters of amorphous calcium phosphate (CaP) and divalent cations, they combine to form a polydisperse distribution of particles called casein micelles. A casein micelle model is proposed which is consistent with the way in which intrinsically disordered proteins interact through predominantly polar, short, linear, motifs. Using the model, an expression is derived for the size distribution of casein micelles formed when caseins bind to the CaP nanoclusters and the complexes further associate with each other and the remaining mixture of free caseins. The result is a refined coat-core model in which the core is formed mainly by the nanocluster complexes and the coat is formed exclusively by the free caseins. Example calculations of the size distribution and surface composition of an average bovine milk are compared with experiment. The average size, size distribution and surface composition of the micelles is shown to depend on the affinity of the nanocluster complexes for each other in competition with their affinity for free caseins, and on the concentrations of free caseins, calcium ions and other salts in the continuous phase.
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Affiliation(s)
- Carl Holt
- Institute of Molecular, Cell and Systems Biology, University of Glasgow, Glasgow, G12 8QQ, UK.
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72
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Li H, Wu J, Doost AS, Su J, Van der Meeren P. Electrostatic interaction between whey proteins and low methoxy pectin studied by quartz crystal microbalance with dissipation monitoring. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106489] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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73
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Rühs PA, Bergfreund J, Bertsch P, Gstöhl SJ, Fischer P. Complex fluids in animal survival strategies. SOFT MATTER 2021; 17:3022-3036. [PMID: 33729256 DOI: 10.1039/d1sm00142f] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Animals have evolved distinctive survival strategies in response to constant selective pressure. In this review, we highlight how animals exploit flow phenomena by manipulating their habitat (exogenous) or by secreting (endogenous) complex fluids. Ubiquitous endogenous complex fluids such as mucus demonstrate rheological versatility and are therefore involved in many animal behavioral traits ranging from sexual reproduction to protection against predators. Exogenous complex fluids such as sand can be used either for movement or for predation. In all cases, time-dependent rheological properties of complex fluids are decisive for the fate of the biological behavior and vice versa. To exploit these rheological properties, it is essential that the animal is able to sense the rheology of their surrounding complex fluids in a timely fashion. As timing is key in nature, such rheological materials often have clearly defined action windows matching the time frame of their direct biological behavior. As many rheological properties of these biological materials remain poorly studied, we demonstrate with this review that rheology and material science might provide an interesting quantitative approach to study these biological materials in particular in context towards ethology and bio-mimicking material design.
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Affiliation(s)
- Patrick A Rühs
- Department of Bioengineering, University of California, 218 Hearst Memorial Mining Building, Berkeley, CA 94704, USA
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74
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Yang N, Ye J, Li J, Hu B, Leheny RL, Nishinari K, Fang Y. Interfacial behaviour of β-lactoglobulin aggregates at the oil-water interface studied using particle tracking and dilatational rheology. SOFT MATTER 2021; 17:2973-2984. [PMID: 33595572 DOI: 10.1039/d0sm01761b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
During processing, proteins are easily self-assembled into different aggregates, such as nanoparticles and fibrils. Protein aggregates exhibit a strong interfacial activity due to their morphologies and functional groups on the surface. Their interfacial structure and rheological properties at the oil-water interface have a significant effect on the stability and fat digestion of emulsions in food. In this study, β-lactoglobulin (β-lg) aggregates including β-lg nanoparticles (β-lg NP) and β-lg fibrils (β-lg F) were prepared in solution by controlling the heating temperature and pH, and their surface properties including the electric potential, hydrophobicity, and density of free thiol groups were characterized. The adsorption kinetics, interfacial rheology, and displacement by bile salts (BSs) of native β-lg and its aggregates at the oil (decane)/water interfaces were studied using particle tracking microrheology and dilatational rheology. From the movement of tracer particles at the interface, β-lg NP and β-lg F were found to adsorb faster than native β-lg, and they were found to form interfacial films with a marginally higher elasticity. During the process of protein adsorption, the films of β-lg and its aggregates are not uniform. In the process of protein displacement, β-lg NP has the strongest ability while native β-lg has the weakest ability to resist BS substitution, which is consistent with the results from in vitro digestion experiments. The present study reveals the microrheological behaviour of protein aggregates at the oil-water interface and demonstrates that β-lg thermal aggregates exhibit an excellent emulsification ability and can be used to control fat digestion. The study also illustrates the applicability of microrheological methods to the study of interfacial rheology and its complementarity with dilatational rheological methods.
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Affiliation(s)
- Nan Yang
- Glyn O. Phillips Hydrocolloid Research Centre, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Department of Bioengineering and Food Science, Hubei University of Technology, Wuhan 430068, China. and Food Hydrocolloid International Science and Technology Cooperation Base of Hubei Province, Hubei University of Technology, Wuhan 430068, China and Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Jing Ye
- Glyn O. Phillips Hydrocolloid Research Centre, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Department of Bioengineering and Food Science, Hubei University of Technology, Wuhan 430068, China.
| | - Jing Li
- Glyn O. Phillips Hydrocolloid Research Centre, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Department of Bioengineering and Food Science, Hubei University of Technology, Wuhan 430068, China.
| | - Bing Hu
- Glyn O. Phillips Hydrocolloid Research Centre, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Department of Bioengineering and Food Science, Hubei University of Technology, Wuhan 430068, China.
| | - Robert L Leheny
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Katsuyoshi Nishinari
- Glyn O. Phillips Hydrocolloid Research Centre, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Department of Bioengineering and Food Science, Hubei University of Technology, Wuhan 430068, China. and Food Hydrocolloid International Science and Technology Cooperation Base of Hubei Province, Hubei University of Technology, Wuhan 430068, China
| | - Yapeng Fang
- Glyn O. Phillips Hydrocolloid Research Centre, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Department of Bioengineering and Food Science, Hubei University of Technology, Wuhan 430068, China. and Food Hydrocolloid International Science and Technology Cooperation Base of Hubei Province, Hubei University of Technology, Wuhan 430068, China
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75
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Krycki MM, Lin SY, Loglio G, Michailov AV, Miller R, Noskov BA. Impact of denaturing agents on surface properties of myoglobin solutions. Colloids Surf B Biointerfaces 2021; 202:111657. [PMID: 33684687 DOI: 10.1016/j.colsurfb.2021.111657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 02/17/2021] [Accepted: 02/22/2021] [Indexed: 01/05/2023]
Abstract
The addition of denaturants strongly influences the surface properties of aqueous myoglobin solutions. The effect differs from the results for mixed solutions of the denaturants and other globular proteins, for example, bovine serum albumin (BSA), lysozyme and β-lactoglobulin (BLG), although the surface properties of the solutions of the pure proteins are similar. The kinetic dependencies of the dynamic surface elasticity of myoglobin solutions with guanidine hydrochloride (GuHCl) reveal at least two adsorption steps at denaturant concentrations higher than 1 M: a very fast increase of the dynamic surface elasticity to approximately 30 mN/m at the beginning of adsorption, and a slower growth to abnormally high values of 250-300 mN/m. At the same time, the surface elasticity of BSA/GuHCl, BLG/GuHCl and lysozyme/GuHCl solutions is a non-monotonic function of the surface age, and does not exceed 50 mN/m close to equilibrium. The high surface elasticity of myoglobin/GuHCl solutions may be associated with protein aggregation in the surface layer. The formation of aggregates is confirmed by ellipsometry and Brewster angle microscopy. The addition of ionic surfactants to protein solutions leads to the formation of myoglobin/surfactant complexes, and the kinetic dependencies of the dynamic surface elasticity display local maxima indicating multistep adsorption kinetics, unlike the corresponding results for solutions of other globular proteins mixed with ionic surfactants. Ellipsometry and infrared reflection-absorption spectroscopy allow tracing the adsorption of the complexes and their displacement from the interface at high surfactant concentrations.
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Affiliation(s)
- Michael M Krycki
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, St.-Petersburg, 198504, Russia; University of Opole, Opole, Poland
| | - Shi-Yow Lin
- National Taiwan University of Science and Technology, Chemical Engineering Department, Taipei, Taiwan
| | - Giuseppe Loglio
- Institute of Condensed Matter Chemistry and Technologies for Energy, Genoa, Italy
| | - Alexander V Michailov
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, St.-Petersburg, 198504, Russia
| | | | - Boris A Noskov
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, St.-Petersburg, 198504, Russia.
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76
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Zhang Q, Zhou Y, Yue W, Qin W, Dong H, Vasanthan T. Nanostructures of protein-polysaccharide complexes or conjugates for encapsulation of bioactive compounds. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.01.026] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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77
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Bergfreund J, Diener M, Geue T, Nussbaum N, Kummer N, Bertsch P, Nyström G, Fischer P. Globular protein assembly and network formation at fluid interfaces: effect of oil. SOFT MATTER 2021; 17:1692-1700. [PMID: 33393584 DOI: 10.1039/d0sm01870h] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The formation of viscoelastic networks at fluid interfaces by globular proteins is essential in many industries, scientific disciplines, and biological processes. However, the effect of the oil phase on the structural transitions of proteins, network formation, and layer strength at fluid interfaces has received little attention. Herein, we present a comprehensive study on the effect of oil polarity on globular protein networks. The formation dynamics and mechanical properties of the interfacial networks of three different globular proteins (lysozyme, β-lactoglobulin, and bovine serum albumin) were studied with interfacial shear and dilatational rheometry. Furthermore, the degree of protein unfolding at the interfaces was evaluated by subsequent injection of disulfide bonds reducing dithiothreitol. Finally, we measured the interfacial layer thickness and protein immersion into the oil phase with neutron reflectometry. We found that oil polarity significantly affects the network formation, the degree of interfacial protein unfolding, interfacial protein location, and the resulting network strength. These results allow predicting emulsion stabilization of proteins, tailoring interfacial layers with desired mechanical properties, and retaining the protein structure and functionality upon adsorption.
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Affiliation(s)
- Jotam Bergfreund
- Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland.
| | - Michael Diener
- Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland.
| | - Thomas Geue
- Laboratory of Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Natalie Nussbaum
- Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland.
| | - Nico Kummer
- Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland. and Laboratory for Cellulose & Wood Materials, Swiss Federal Laboratories for Materials Science and Technology (Empa), Dübendorf, 8600, Switzerland
| | - Pascal Bertsch
- Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland.
| | - Gustav Nyström
- Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland. and Laboratory for Cellulose & Wood Materials, Swiss Federal Laboratories for Materials Science and Technology (Empa), Dübendorf, 8600, Switzerland
| | - Peter Fischer
- Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland.
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78
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Böcker L, Bertsch P, Wenner D, Teixeira S, Bergfreund J, Eder S, Fischer P, Mathys A. Effect of Arthrospira platensis microalgae protein purification on emulsification mechanism and efficiency. J Colloid Interface Sci 2021; 584:344-353. [PMID: 33070074 DOI: 10.1016/j.jcis.2020.09.067] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 12/17/2022]
Abstract
In light of environmental concerns and changing consumer demands, efforts are increasing to replace frequently used animal-based emulsifiers. We demonstrate the interfacial network formation and emulsifying potential of Arthrospira platensis protein extracts and hypothesize a mechanistic change upon progressing purification. A microalgae suspension of A. platensis powder in phosphate buffer solution (pH 7, 0.1 M) was homogenized and insoluble components separated by centrifugation. Proteins were precipitated at the identified isoelectric point at pH 3.5 and diafiltrated. In interfacial shear rheology measurements, the build-up of an interfacial viscoelastic network was faster and final network strength increased with the degree of purification. It is suggested that isolated A. platensis proteins rapidly form an interconnected protein layer while coextracted surfactants impede protein adsorption for crude and soluble extracts. Emulsions with 20 vol % medium chain triglycerides (MCT) oil could be formed with all extracts of different degrees of purification. Normalized by protein concentration, smaller droplets could be stabilized with the isolated fractions. For potential applications in food, pharma and cosmetic product categories, the enhanced functionality has to be balanced against the loss in biomass while purifying microalgae proteins or other alternative single cell proteins.
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Affiliation(s)
- Lukas Böcker
- ETH Zurich, Department of Health Science and Technology, Institute of Food, Nutrition and Health, Sustainable Food Processing Laboratory, Schmelzbergstrasse 9, 8092 Zurich, Switzerland.
| | - Pascal Bertsch
- ETH Zurich, Department of Health Science and Technology, Institute of Food, Nutrition and Health, Food Process Engineering Laboratory, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
| | - David Wenner
- ETH Zurich, Department of Health Science and Technology, Institute of Food, Nutrition and Health, Sustainable Food Processing Laboratory, Schmelzbergstrasse 9, 8092 Zurich, Switzerland.
| | - Stephanie Teixeira
- ETH Zurich, Department of Health Science and Technology, Institute of Food, Nutrition and Health, Sustainable Food Processing Laboratory, Schmelzbergstrasse 9, 8092 Zurich, Switzerland.
| | - Jotam Bergfreund
- ETH Zurich, Department of Health Science and Technology, Institute of Food, Nutrition and Health, Food Process Engineering Laboratory, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
| | - Severin Eder
- ETH Zurich, Department of Health Science and Technology, Institute of Food, Nutrition and Health, Food Biochemistry Laboratory, Schmelzbergstrasse 9, 8092 Zurich, Switzerland.
| | - Peter Fischer
- ETH Zurich, Department of Health Science and Technology, Institute of Food, Nutrition and Health, Food Process Engineering Laboratory, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
| | - Alexander Mathys
- ETH Zurich, Department of Health Science and Technology, Institute of Food, Nutrition and Health, Sustainable Food Processing Laboratory, Schmelzbergstrasse 9, 8092 Zurich, Switzerland.
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79
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Bergfreund J, Bertsch P, Fischer P. Adsorption of proteins to fluid interfaces: Role of the hydrophobic subphase. J Colloid Interface Sci 2021; 584:411-417. [DOI: 10.1016/j.jcis.2020.09.118] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 08/31/2020] [Accepted: 09/09/2020] [Indexed: 12/18/2022]
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80
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Bertsch P, Böcker L, Mathys A, Fischer P. Proteins from microalgae for the stabilization of fluid interfaces, emulsions, and foams. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2020.12.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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81
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Kinetic and structural characterization of whey protein aggregation in a millifluidic continuous process. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106137] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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82
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Zeng H. Self-assembling Properties. Food Hydrocoll 2021. [DOI: 10.1007/978-981-16-0320-4_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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83
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Tian M, Li B, Shen L. Hierarchical Self-Assembly Mechanism of Ladder-Like Orientated Aβ40 Single-Stranded Protofibrils into Multistranded Mature Fibrils. ACS Macro Lett 2020; 9:1759-1765. [PMID: 35653679 DOI: 10.1021/acsmacrolett.0c00622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The complex self-assembly processes in three dimensions of Alzheimer's β-peptide (Aβ) amyloid protofibrils into polymorphic mature fibrils, particularly the relative protofibril orientation and packing mechanism, are poorly understood. We report here the identification and quantification of the hierarchical self-assembly details among distinct Aβ40 fibrils, particularly the winding pictures of two, three, and four individual single-stranded protofibrils into two-, three-, and four-stranded mature fibrils, respectively, via cross-sectional analysis of atomic force microscopy (AFM) images. The statistical polymer physics analysis of fibril flexibilities from AFM characterizations as well as molecular dynamics (MD) simulations reveal a ladder-like packing mechanism rather than a closed-packing manner for the interprotofibril association into Aβ40 mature fibrils. Moreover, our MD results show atomic packing polymorphism at the well-packing interfaces even within the same multistranded fibril. This work provides mechanistic insights into the polymorphic transition of single-stranded Aβ40 protofibrils into multistranded mature fibrils at the mesoscopic level, which is useful for a more comprehensive understanding of Alzheimer's β-peptide amyloidosis.
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Affiliation(s)
- Mengting Tian
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Bei Li
- Research Center for Materials Genome Engineering, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Lei Shen
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
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84
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Han Q, Tao F, Xu Y, Su H, Yang F, Körstgens V, Müller‐Buschbaum P, Yang P. Tuning Chain Relaxation from an Amorphous Biopolymer Film to Crystals by Removing Air/Water Interface Limitations. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qian Han
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Fei Tao
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Yan Xu
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Hao Su
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Facui Yang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Volker Körstgens
- Lehrstuhl für Funktionelle Materialien Physik Department Technische Universität München James-Franck-Str. 1 85748 Garching Germany
| | - Peter Müller‐Buschbaum
- Lehrstuhl für Funktionelle Materialien Physik Department Technische Universität München James-Franck-Str. 1 85748 Garching Germany
- Heinz Maier-Leibnitz Zentrum (MLZ) Technische Universität München Lichtenbergstr. 1 85748 Garching Germany
| | - Peng Yang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
- State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai 200438 China
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85
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Ozel B, Zhang Z, He L, McClements DJ. Digestion of animal- and plant-based proteins encapsulated in κ-carrageenan/protein beads under simulated gastrointestinal conditions. Food Res Int 2020; 137:109662. [DOI: 10.1016/j.foodres.2020.109662] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/24/2020] [Accepted: 09/06/2020] [Indexed: 12/25/2022]
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86
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Michaels TCT, Memet E, Mahadevan L. Mechanical basis for fibrillar bundle morphology. SOFT MATTER 2020; 16:9306-9318. [PMID: 32935723 DOI: 10.1039/d0sm01145b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Understanding the morphology of self-assembled fibrillar bundles and aggregates is relevant to a range of problems in molecular biology, supramolecular chemistry and materials science. Here, we propose a coarse-grained approach that averages over specific molecular details and yields an effective mechanical theory for the spatial complexity of self-assembling fibrillar structures that arises due to the competing effects of (the bending and twisting) elasticity of individual filaments and the adhesive interactions between them. We show that our theoretical framework accounting for this allows us to capture a number of diverse fibril morphologies observed in natural and synthetic systems, ranging from Filopodia to multi-walled carbon nanotubes, and leads to a phase diagram of possible fibril shapes. We also show how the extreme sensitivity of these morphologies can lead to spatially chaotic structures. Together, these results suggest a common mechanical basis for mesoscale fibril morphology as a function of the nanoscale mechanical properties of its filamentous constituents.
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Affiliation(s)
- Thomas C T Michaels
- Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Edvin Memet
- Department of Physics, Harvard University, Cambridge, MA 02138, USA
| | - L Mahadevan
- Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA and Department of Physics, Harvard University, Cambridge, MA 02138, USA and Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA.
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87
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Biviano MD, Böni LJ, Berry JD, Fischer P, Dagastine RR. Interfacial Properties of Chitosan in Interfacial Shear and Capsule Compression. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48084-48092. [PMID: 32921046 DOI: 10.1021/acsami.0c11781] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The time-dependent behavior of surface-active adsorption layers at the oil/water interface can dictate emulsion behavior at both the micro- and macroscale. In addition, self-healing behavior of the adsorption layer may benefit emulsion stability subject to large deformation under processing or during final application. We explore the behavior of chitosan, a known hydrophilic emulsifier, which forms nanoparticle aggregates when the concentration of acetate buffer exceeds 0.3 M. We observe a Pickering adsorption layer building and strain-dependent behavior of the chitosan at the medium chain triglyceride oil/water interface. We compare this to the behavior of identical chitosan layers coated on oil droplets via atomic force microscopy colloidal probe compression in both linear and oscillatory compressions. In both interfacial shear rheometry and the capsule compression, a thick, elastic layer with strong time-dependent recovery behavior is observed, suggesting that the layer has some self-healing capabilities.
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Affiliation(s)
- Matthew D Biviano
- Department of Chemical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Lukas J Böni
- Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
| | - Joseph D Berry
- Department of Chemical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Peter Fischer
- Institute of Food, Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
| | - Raymond R Dagastine
- Department of Chemical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
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88
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Zheng J, Tang CH, Sun W. Heteroprotein complex coacervation: Focus on experimental strategies to investigate structure formation as a function of intrinsic and external physicochemical parameters for food applications. Adv Colloid Interface Sci 2020; 284:102268. [PMID: 32977143 DOI: 10.1016/j.cis.2020.102268] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/07/2020] [Accepted: 09/09/2020] [Indexed: 12/14/2022]
Abstract
Proteins are important components of foods, because they are one of the essential food groups, they have many functional properties that are very useful for modifying the physicochemical and textural properties of processed foods and possess many biological activities that are beneficial to human health. The process of heteroprotein complex coacervation (HPCC) combines two or more proteins through long-range coulombic interaction and specific short-range forces, creating a liquid-liquid colloid, with highly concentrated protein in the droplet phase and much more diluted-protein in the bulk phase. Coacervates possess novel, modifiable, physicochemical characteristics, and often exhibit the combined biological activities of the protein components, which makes them applicable to formulated foods and encapsulation carriers. This review discusses research progress in the field of HPCC in three parts: (1) the basic and innovative experimental methods and simulation tools for understanding the physicochemical behavior of these heteroprotein supramolecular architectures; (2) the influence of environmental factors (pH, mixing ratio, salts, temperature, and formation time) and intrinsic factors (protein modifications, metal-binding, charge anisotropy, and polypeptide designs) on HPCC; (3) the potential applications of HPCC materials, such as encapsulation of nutraceuticals, nanogels, emulsion stabilization, and protein separation. The wide diversity of possible combinations of proteins with different properties, endows HPCC materials with great potential for development into highly-innovation functional food ingredients.
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Affiliation(s)
- Jiabao Zheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Chuan-He Tang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China
| | - Weizheng Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China.
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89
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Investigating the effect of sugar-terminated nanoparticles on amyloid fibrillogenesis of β-lactoglobulin. Int J Biol Macromol 2020; 165:291-307. [PMID: 32961178 DOI: 10.1016/j.ijbiomac.2020.09.104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 08/19/2020] [Accepted: 09/14/2020] [Indexed: 11/22/2022]
Abstract
In vivo tissue deposition of fibrillar protein aggregates is the cause of several degenerative diseases. Evidence suggests that interfering with the pathology-associated amyloid fibrillogenesis by inhibitory molecules is envisaged as the primary therapeutic strategy. Amyloid fibril formation of proteins has been demonstrated to be influenced by nanoparticles/nanomaterials. As compared with their molecular form counterpart, this work examined the effect of sucrose-terminated nanoparticles on the in vitro amyloid fibrillogenesis and structural properties of β-lactoglobulin at pH 2.0 and 80 °C. ThT binding and electron microscopy results demonstrated that sucrose-terminated nanoparticles were able to suppress β-lactoglobulin fibrillogenesis in a concentration-dependent fashion. Importantly, sucrose-terminated nanoparticles showed better β-lactoglobulin fibril-inhibiting ability than sucrose molecules. ANS fluorescence and right-angle light scattering results showed reduced solvent exposure and decreased aggregation, respectively, in the β-lactoglobulin samples upon treatment with sucrose-terminated nanoparticles. Moreover, fluorescence quenching analyses revealed that the static quenching mechanism and formation of a non-fluorescent fluorophore-nanoparticle complex are involved in the nanoparticle-β-lactoglobulin interaction. We believe that the results from this study may suggest that the nanoparticle form of biocompatible sugar-related osmolytes may serve as effective inhibiting/suppressing agents toward protein fibrillogenesis.
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90
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Han Q, Tao F, Xu Y, Su H, Yang F, Körstgens V, Müller-Buschbaum P, Yang P. Tuning Chain Relaxation from an Amorphous Biopolymer Film to Crystals by Removing Air/Water Interface Limitations. Angew Chem Int Ed Engl 2020; 59:20192-20200. [PMID: 32705794 DOI: 10.1002/anie.202008999] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Indexed: 12/30/2022]
Abstract
A promising route to the synthesis of protein-mimetic materials that are capable of strong mechanics and complex functions is provided by intermolecular β-sheet stacking. An understanding of the assembly mechanism on β-sheet stacking at molecular-level and the related influencing factors determine the potential to design polymorphs of such biomaterials towards broad applications. Herein, we quantitatively reveal the air/water interface (AWI) parameters regulating the transformation from crowding amorphous aggregates to ordered phase and show that the polymorph diversity of β-sheet stacking is regulated by the chain relaxation-crystallization mechanism. An amorphous macroscale amyloid-like nanofilm is formed at the AWI, in which unfolded protein chains are aligned in a short-range manner to form randomly packed β-sheets. The subsequent biopolymer chain relaxation-crystallization to form nanocrystals is further triggered by removing the limitations of energy and space at the AWI.
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Affiliation(s)
- Qian Han
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Fei Tao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Yan Xu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Hao Su
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Facui Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Volker Körstgens
- Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748, Garching, Germany
| | - Peter Müller-Buschbaum
- Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748, Garching, Germany.,Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748, Garching, Germany
| | - Peng Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China.,State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, China
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91
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Nikfarjam S, Jouravleva EV, Anisimov MA, Woehl TJ. Effects of Protein Unfolding on Aggregation and Gelation in Lysozyme Solutions. Biomolecules 2020; 10:biom10091262. [PMID: 32887233 PMCID: PMC7563771 DOI: 10.3390/biom10091262] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 08/29/2020] [Indexed: 12/15/2022] Open
Abstract
In this work, we investigate the role of folding/unfolding equilibrium in protein aggregation and formation of a gel network. Near the neutral pH and at a low buffer ionic strength, the formation of the gel network around unfolding conditions prevents investigations of protein aggregation. In this study, by deploying the fact that in lysozyme solutions the time of folding/unfolding is much shorter than the characteristic time of gelation, we have prevented gelation by rapidly heating the solution up to the unfolding temperature (~80 °C) for a short time (~30 min.) followed by fast cooling to the room temperature. Dynamic light scattering measurements show that if the gelation is prevented, nanosized irreversible aggregates (about 10–15 nm radius) form over a time scale of 10 days. These small aggregates persist and aggregate further into larger aggregates over several weeks. If gelation is not prevented, the nanosized aggregates become the building blocks for the gel network and define its mesh length scale. These results support our previously published conclusion on the nature of mesoscopic aggregates commonly observed in solutions of lysozyme, namely that aggregates do not form from lysozyme monomers in their native folded state. Only with the emergence of a small fraction of unfolded proteins molecules will the aggregates start to appear and grow.
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Affiliation(s)
- Shakiba Nikfarjam
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA; (S.N.); (T.J.W.)
| | - Elena V. Jouravleva
- Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, USA;
| | - Mikhail A. Anisimov
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA; (S.N.); (T.J.W.)
- Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, USA;
- Correspondence:
| | - Taylor J. Woehl
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA; (S.N.); (T.J.W.)
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92
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Enzymatic hydrolysis of pea protein: Interactions and protein fractions involved in fermentation induced gels and their influence on rheological properties. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105793] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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93
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Schulte J, Stöckermann M, Gebhardt R. Influence of pH on the stability and structure of single casein microparticles. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105741] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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94
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Sun X, Zeng H, Tang T. Molecular simulation of folding and aggregation of multi-core polycyclic aromatic compounds. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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95
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Grishina VS, Vikhrenko VS, Ciach A. Triangular lattice models for pattern formation by core-shell particles with different shell thicknesses. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:405102. [PMID: 32498052 DOI: 10.1088/1361-648x/ab9979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
Triangular lattice models for pattern formation by hard-core soft-shell particles at interfaces are introduced and studied in order to determine the effect of the shell thickness and structure. In model I, we consider particles with hard-cores covered by shells of cross-linked polymeric chains. In model II, such inner shell is covered by a much softer outer shell. In both models, the hard cores can occupy sites of the triangular lattice, and nearest-neighbor repulsion following from overlapping shells is assumed. The capillary force is represented by the second or the fifth neighbor attraction in model I or II, respectively. Ground states with fixed chemical potentialμor with fixed fraction of occupied sitescare thoroughly studied. ForT> 0, theμ(c) isotherms, compressibility and specific heat are calculated by Monte Carlo simulations. In model II, 6 ordered periodic patterns occur in addition to 4 phases found in model I. These additional phases, however, are stable only at the phase coexistence lines at the (μ,T) diagram, which otherwise looks like the diagram of model I. In the canonical ensemble, these 6 phases and interfaces between them appear in model II for large intervals ofcand the number of possible patterns is much larger than in model I. We calculated line tensions for different interfaces, and found that the favorable orientation of the interface corresponds to its smoothest shape in both models.
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Affiliation(s)
- V S Grishina
- Belarusian State Technological University, 13a Sverdlova str., 220006 Minsk, Belarus
| | - V S Vikhrenko
- Belarusian State Technological University, 13a Sverdlova str., 220006 Minsk, Belarus
| | - A Ciach
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
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96
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Tang CH. Globular proteins as soft particles for stabilizing emulsions: Concepts and strategies. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105664] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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97
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Liu X, Hsieh YL. Amphiphilic Protein Microfibrils from Ice-Templated Self-Assembly and Disassembly of Pickering Emulsions. ACS APPLIED BIO MATERIALS 2020; 3:2473-2481. [PMID: 35025297 DOI: 10.1021/acsabm.0c00188] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Amphiphilic protein microfibrils have been generated for the first time by ice-templated self-assembly of aqueous globular protein colloids and subsequent selective disassembly in polar solvents like MeOH, EtOH, acetone, and dimethylformamide. Semicrystalline microfibrils, ca. 1.2 μm wide and 45-70 μm long, produced from soy proteins are excellent amphiphiles, which are capable of stabilizing both high-internal-phase o/w and w1/o/w2 double emulsions as well as retaining amphiphilicity even with surface-bound lipophiles and electrophiles. This ice-templated self-assembling and polar solvent disassembling approach is applicable to other legume proteins, such as pea proteins, and is scalable to process globular proteins into amphiphilic microfibrils for Pickering emulsions in many potential applications including food, pharmaceuticals and skin care.
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Affiliation(s)
- Xingchen Liu
- Biological and Agricultural Engineering, University of California, Davis, California 95616, United States
| | - You-Lo Hsieh
- Biological and Agricultural Engineering, University of California, Davis, California 95616, United States
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98
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Perry SL, McClements DJ. Recent Advances in Encapsulation, Protection, and Oral Delivery of Bioactive Proteins and Peptides using Colloidal Systems. Molecules 2020; 25:E1161. [PMID: 32150848 PMCID: PMC7179163 DOI: 10.3390/molecules25051161] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 02/07/2023] Open
Abstract
There are many areas in medicine and industry where it would be advantageous to orally deliver bioactive proteins and peptides (BPPs), including ACE inhibitors, antimicrobials, antioxidants, hormones, enzymes, and vaccines. A major challenge in this area is that many BPPs degrade during storage of the product or during passage through the human gut, thereby losing their activity. Moreover, many BPPs have undesirable taste profiles (such as bitterness or astringency), which makes them unpleasant to consume. These challenges can often be overcome by encapsulating them within colloidal particles that protect them from any adverse conditions in their environment, but then release them at the desired site-of-action, which may be inside the gut or body. This article begins with a discussion of BPP characteristics and the hurdles involved in their delivery. It then highlights the characteristics of colloidal particles that can be manipulated to create effective BPP-delivery systems, including particle composition, size, and interfacial properties. The factors impacting the functional performance of colloidal delivery systems are then highlighted, including their loading capacity, encapsulation efficiency, protective properties, retention/release properties, and stability. Different kinds of colloidal delivery systems suitable for encapsulation of BPPs are then reviewed, such as microemulsions, emulsions, solid lipid particles, liposomes, and microgels. Finally, some examples of the use of colloidal delivery systems for delivery of specific BPPs are given, including hormones, enzymes, vaccines, antimicrobials, and ACE inhibitors. An emphasis is on the development of food-grade colloidal delivery systems, which could be used in functional or medical food applications. The knowledge presented should facilitate the design of more effective vehicles for the oral delivery of bioactive proteins and peptides.
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Affiliation(s)
- Sarah L. Perry
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA;
| | - David Julian McClements
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA 01003, USA
- Department of Food Science & Bioengineering, Zhejiang Gongshang University, 18 Xuezheng Street, Hangzhou 310018, China
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99
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Chakraborty P, Tang Y, Yamamoto T, Yao Y, Guterman T, Zilberzwige-Tal S, Adadi N, Ji W, Dvir T, Ramamoorthy A, Wei G, Gazit E. Unusual Two-Step Assembly of a Minimalistic Dipeptide-Based Functional Hypergelator. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906043. [PMID: 31984580 DOI: 10.1002/adma.201906043] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 12/03/2019] [Indexed: 05/06/2023]
Abstract
Self-assembled peptide hydrogels represent the realization of peptide nanotechnology into biomedical products. There is a continuous quest to identify the simplest building blocks and optimize their critical gelation concentration (CGC). Herein, a minimalistic, de novo dipeptide, Fmoc-Lys(Fmoc)-Asp, as an hydrogelator with the lowest CGC ever reported, almost fourfold lower as compared to that of a large hexadecapeptide previously described, is reported. The dipeptide self-assembles through an unusual and unprecedented two-step process as elucidated by solid-state NMR and molecular dynamics simulation. The hydrogel is cytocompatible and supports 2D/3D cell growth. Conductive composite gels composed of Fmoc-Lys(Fmoc)-Asp and a conductive polymer exhibit excellent DNA binding. Fmoc-Lys(Fmoc)-Asp exhibits the lowest CGC and highest mechanical properties when compared to a library of dipeptide analogues, thus validating the uniqueness of the molecular design which confers useful properties for various potential applications.
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Affiliation(s)
- Priyadarshi Chakraborty
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Yiming Tang
- Department of Physics, State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences (MOE), Multiscale Research Institute of Complex Systems, and Collaborative Innovation Center of Advanced Microstructures (Nanjing), Fudan University, Shanghai, 200433, P. R. China
| | - Tomoya Yamamoto
- Biophysics and Department of Chemistry, Biomedical Engineering, Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yifei Yao
- Department of Physics, State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences (MOE), Multiscale Research Institute of Complex Systems, and Collaborative Innovation Center of Advanced Microstructures (Nanjing), Fudan University, Shanghai, 200433, P. R. China
| | - Tom Guterman
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Shai Zilberzwige-Tal
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Nofar Adadi
- Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Wei Ji
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Tal Dvir
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
- Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Ayyalusamy Ramamoorthy
- Biophysics and Department of Chemistry, Biomedical Engineering, Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Guanghong Wei
- Department of Physics, State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences (MOE), Multiscale Research Institute of Complex Systems, and Collaborative Innovation Center of Advanced Microstructures (Nanjing), Fudan University, Shanghai, 200433, P. R. China
| | - Ehud Gazit
- School of Molecular Cell Biology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
- Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv, 6997801, Israel
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100
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Cao Y, Mezzenga R. Design principles of food gels. ACTA ACUST UNITED AC 2020; 1:106-118. [PMID: 37127997 DOI: 10.1038/s43016-019-0009-x] [Citation(s) in RCA: 198] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 11/13/2019] [Indexed: 12/19/2022]
Abstract
Naturally sourced gels from food biopolymers have advanced in recent decades to compare favourably in performance and breadth of application to their synthetic counterparts. Here, we comprehensively review the constitutive nature, gelling mechanisms, design approaches, and structural and mechanical properties of food gels. We then consider how these food gel design principles alter rheological and tribological properties for food quality improvement, nutrient-modification of foods while preserving sensory perception, and targeted delivery of drugs and bioactives within the gastrointestinal tract. We propose that food gels may offer advantages over their synthetic counterparts owing to their source renewability, low cost, biocompatibility and biodegradability. We also identify emerging approaches and trends that may improve and expand the current scope, properties and functionalities of food gels and inspire new applications.
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