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Liamas E, Connell SD, Sarkar A. Frictional behaviour of plant proteins in soft contacts: unveiling nanoscale mechanisms. NANOSCALE ADVANCES 2023; 5:1102-1114. [PMID: 36798497 PMCID: PMC9926882 DOI: 10.1039/d2na00696k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/26/2022] [Indexed: 06/18/2023]
Abstract
Despite the significance of nanotribology in the design of functional biomaterials, little is known about nanoscale friction in the presence of protein-coated soft contact surfaces. Here, we report a detailed investigation of frictional behaviour of sustainable plant proteins at the nanoscale for the first time, using deformable bio-relevant surfaces that achieve biologically relevant contact pressures. A combination of atomic force microscopy, quartz crystal microbalance with dissipation monitoring, and friction force microscopy with soft polydimethylsiloxane (PDMS, 150 kPa) surfaces was employed to elucidate the frictional properties of model plant proteins, i.e. lupine, pea, and potato proteins at the nanoscale while systematically varying the pH and ionic strength. Interactions of these plant proteins with purified mucins were also probed. We provide the much-needed direct experimental evidence that the main factor dictating the frictional properties of plant proteins is their affinity towards the surface, followed by the degree of protein film hydration. Proteins with high surface affinity, such as pea and potato protein, have better lubricating performance than lupine at the nanoscale. Other minor factors that drive lubrication are surface interactions between sliding bodies, especially at low load, whilst jamming of the contact area caused by larger protein aggregates increases friction. Novel findings reveal that interactions between plant proteins and mucins lead to superior lubricating properties, by combining high surface affinity from the plant proteins and high hydration by mucins. We anticipate that fundamental understanding gained from this work will set the stage for the design of a plethora of sustainable biomaterials and food with optimum nanolubrication performance.
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Affiliation(s)
- Evangelos Liamas
- Food Colloids and Bioprocessing Group, School of Food Science and Nutrition, University of Leeds UK
| | - Simon D Connell
- Molecular and Nanoscale Physics Group, School of Physics and Astronomy, University of Leeds UK
| | - Anwesha Sarkar
- Food Colloids and Bioprocessing Group, School of Food Science and Nutrition, University of Leeds UK
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2
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Xiong W, Li Y, Ren C, Li J, Li B, Geng F. Thermodynamic parameters of gelatin-pectin complex coacervation. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106958] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Hu B, Hu J, Han L, Cao J, Nishinari K, Yang J, Fang Y, Li D. Conformational transition and gelation of κ-carrageenan in electrostatic complexation with β-lactoglobulin aggregates. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Fekih-Ahmed K, Khemissi H, Aschi A. Structural transition induced by physicochemical parameters during complexation and coacervation of Poly-L-Ornithine with poly-(sodium 4-styrene sulfonate). INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1960339] [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]
Affiliation(s)
- Khouloud Fekih-Ahmed
- Faculté des Sciences de Tunis, LR99ES16 Laboratoire Physique de la Matière Molle et de la Modélisation Électromagnétique, Université de Tunis El Manar, Tunis, Tunisia
| | - Hela Khemissi
- Faculté des Sciences de Tunis, LR99ES16 Laboratoire Physique de la Matière Molle et de la Modélisation Électromagnétique, Université de Tunis El Manar, Tunis, Tunisia
| | - Adel Aschi
- Faculté des Sciences de Tunis, LR99ES16 Laboratoire Physique de la Matière Molle et de la Modélisation Électromagnétique, Université de Tunis El Manar, Tunis, Tunisia
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5
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Gelling Properties. Food Hydrocoll 2021. [DOI: 10.1007/978-981-16-0320-4_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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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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7
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Johnson A, Kong F, Miao S, Lin HTV, Thomas S, Huang YC, Kong ZL. Therapeutic effects of antibiotics loaded cellulose nanofiber and κ-carrageenan oligosaccharide composite hydrogels for periodontitis treatment. Sci Rep 2020; 10:18037. [PMID: 33093521 PMCID: PMC7581766 DOI: 10.1038/s41598-020-74845-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 09/03/2020] [Indexed: 12/17/2022] Open
Abstract
Periodontitis is an inflammatory disease that can lead to the periodontal pocket formation and tooth loss. This study was aimed to develop antimicrobials loaded hydrogels composed of cellulose nanofibers (CNF) and κ-carrageenan oligosaccharides (CO) nanoparticles for the treatment of periodontitis. Two antimicrobial agents such as surfactin and Herbmedotcin were selected as the therapeutic agents and the hydrogels were formulated based on the increasing concentration of surfactin. The proposed material has high thermal stability, controlled release, and water absorption capacity. This study was proceeded by investigating the in vitro antibacterial and anti-inflammatory properties of the hydrogels. This material has strong antibacterial activity against periodontal pathogens such as Streptococcus mutans, Porphyromonas gingivalis, Fusobacterium nucleatum, and Pseudomonas aeruginosa. Moreover, a significant increase in malondialdehyde (MDA) production and a decrease in biofilm formation and metabolic activity of the bacteria was observed in the presence of hydrogel. Besides, it reduced the reactive oxygen species (ROS) generation, transcription factor, and cytokines production in human gingival fibroblast cells (HGF) under inflammatory conditions. In conclusion, the hydrogels were successfully developed and proven to have antibacterial and anti-inflammatory properties for the treatment of periodontitis. Thus, it can be used as an excellent candidate for periodontitis treatment.
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Affiliation(s)
- Athira Johnson
- Department of Food Science, National Taiwan Ocean University, Pei-Ning Road, Keelung, 20224, Taiwan, ROC
| | - Fanbin Kong
- Department of Food Science and Technology, University of Georgia, 100 Cedar Street, Athens, GA, 30602, USA
| | - Song Miao
- Teagasc Food Research Centre, Moorepark, Fermoy, Co., Cork, P61 C996, Ireland
| | - Hong-Ting Victor Lin
- Department of Food Science, National Taiwan Ocean University, Pei-Ning Road, Keelung, 20224, Taiwan, ROC
| | - Sabu Thomas
- School of Energy Studies and School of Chemical Sciences, Mahatma Gandhi University, Priyadarshini Hills P.O, Kottayam, Kerala, 686560, India
| | - Yi-Cheng Huang
- Department of Food Science, National Taiwan Ocean University, Pei-Ning Road, Keelung, 20224, Taiwan, ROC
| | - Zwe-Ling Kong
- Department of Food Science, National Taiwan Ocean University, Pei-Ning Road, Keelung, 20224, Taiwan, ROC.
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8
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Yemenicioğlu A, Farris S, Turkyilmaz M, Gulec S. A review of current and future food applications of natural hydrocolloids. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14363] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ahmet Yemenicioğlu
- Department of Food Engineering Izmir Institute of Technology 35430 Urla, İzmir Turkey
| | - Stefano Farris
- DeFENS, Department of Food, Environmental and Nutritional Sciences Packaging Division University of Milan Via Celoria 2 20133 Milan Italy
| | - Meltem Turkyilmaz
- Institute of Food Safety Ankara University 06110 Dışkapı, Ankara Turkey
| | - Sukru Gulec
- Department of Food Engineering Izmir Institute of Technology 35430 Urla, İzmir Turkey
- Department of Molecular Nutrition and Human Physiology Laboratory Izmir Institute of Technology 35430 Urla, İzmir Turkey
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Feddaoui W, Aschi A, Bey H, Othman T. Study of the complex coacervation mechanism between ovalbumin and the strong polyanion PSSNa: influence of temperature and pH. EUROPEAN BIOPHYSICS JOURNAL : EBJ 2019; 48:803-811. [PMID: 31655892 DOI: 10.1007/s00249-019-01406-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 09/10/2019] [Accepted: 10/13/2019] [Indexed: 01/18/2023]
Abstract
We studied the complex between ovalbumin and long flexible poly-(sodium 4-styrene sulfonate) as a function of pH and temperature. We used various techniques [turbidimetry, conductometry, dynamic light scattering, viscosimetry, and ultra-small-angle light scattering (USALS)] to fully characterize the coacervate complex. Different phases of complexation versus temperature were determined by turbidimetric analysis (pHc, pHϕ1, and pHϕ2). The optimal protein/polyelectrolyte interaction occurred at pHopt 4. An increase in temperature made the hydrophobic interactions more favorable in the case of the soluble complex and complex coacervation phases (pH > pHϕ2). We systematically determined the activation energy to follow the conformational changes of the complex at different temperatures. At pHopt, the size of the formed complex showed a remarkable decrease with temperature increase. USALS was used to determine simultaneously the radius of gyration (Rg) and fractal dimension Df of the coacervate.
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Affiliation(s)
- Wafa Feddaoui
- Faculté Des Sciences de Tunis, LR99ES16 Laboratoire Physique de La Matière Molle Et de La Modélisation Électromagnétique, Université de Tunis El Manar, 2092, Tunis, Tunisia
| | - Adel Aschi
- Faculté Des Sciences de Tunis, LR99ES16 Laboratoire Physique de La Matière Molle Et de La Modélisation Électromagnétique, Université de Tunis El Manar, 2092, Tunis, Tunisia.
| | - Houda Bey
- Faculté Des Sciences de Tunis, LR99ES16 Laboratoire Physique de La Matière Molle Et de La Modélisation Électromagnétique, Université de Tunis El Manar, 2092, Tunis, Tunisia
| | - Tahar Othman
- Faculté Des Sciences de Tunis, LR99ES16 Laboratoire Physique de La Matière Molle Et de La Modélisation Électromagnétique, Université de Tunis El Manar, 2092, Tunis, Tunisia
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Derkach S, Voron'ko N, Kuchina YA, Kolotova D, Gordeeva A, Faizullin D, Gusev YA, Zuev YF, Makshakova O. Molecular structure and properties of κ-carrageenan-gelatin gels. Carbohydr Polym 2018; 197:66-74. [DOI: 10.1016/j.carbpol.2018.05.063] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 05/06/2018] [Accepted: 05/21/2018] [Indexed: 01/14/2023]
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11
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Zhao M, Wang Y, Huang X, Gaenzle M, Wu Z, Nishinari K, Yang N, Fang Y. Ambient storage of microencapsulated Lactobacillus plantarum ST-III by complex coacervation of type-A gelatin and gum arabic. Food Funct 2018; 9:1000-1008. [PMID: 29345267 DOI: 10.1039/c7fo01802a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Ambient storage of dry powdered probiotics is necessary for manufacturer's cost reduction and customer's convenience. Complex coacervation is a promising microencapsulation technique. In this work, a probiotic matrix of type-A gelatin/gum arabic/sucrose (GE/GA/S) with high coacervation pH was designed, based on the alkaline isoelectric point of type-A gelatin. Bacterial survival during ambient storage at room temperature and certain relative humidity were detected. To clarify the protection factors of the coacervation matrix of GE/GA/S, dry microcapsules of GA, GE, GE/sucrose and GE/GA were prepared as controls and compared in terms of their morphology, moisture content, dynamic vapor absorption and cell viability. Probiotics in GE/GA/S5.5 microcapsules behaved the best during spray drying, ambient storage and heat treatment. The results proved that sucrose addition was necessary for cell viability against environmental stresses, and that encapsulation by complex coacervation was a positive factor in cell protection, especially at neutral coacervation pH.
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Affiliation(s)
- Meng Zhao
- Glyn O. Phillips Hydrocolloid Research Centre at HUT, Hubei International Scientific and Technological Cooperation Base of Food Hydrocolloids, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China.
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12
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Seručnik M, Podlipnik Č, Hribar-Lee B. DNA-Polyelectrolyte Complexation Study: The Effect of Polyion Charge Density and Chemical Nature of the Counterions. J Phys Chem B 2018; 122:5381-5388. [PMID: 29366327 PMCID: PMC6690487 DOI: 10.1021/acs.jpcb.7b11094] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Complexes of polycations and DNA, also known as polyplexes, have been extensively studied in the past decade, as potential gene delivery systems. Their stability depends strongly on the characteristics of the polycations, as well as the nature of the added salt. We present here a study of the DNA ionene complexation in which we used fluorescence, UV, and CD spectroscopy, combined with molecular dynamics computer simuations, to systematically examine the influence of the polycation charge density, as well as the influence of the nature of the counterion, on the stability of these systems. Ionenes as polycations, depending on their structural characteristics, have previously been found to possess low cytotoxicity, and are therefore particularly interesting as potential gene delivery agents. The results show that the DNA solutions in the presence of the polycation are more stable in the case of very large or very small ionene charge density, suggesting different mechanism of complexation. The computer simulations show that the ionenes with high charge density bind to the minor groove of the DNA molecules, while the ionenes with lower charge density bind to the major groove of the DNA. The nature of the counterions play only a minor role: precipitation of the DNA molecules occurs at slightly lower ionene concentration when fluoride counterion are present, compared to the bromide counterions.
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Affiliation(s)
- Mojca Seručnik
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Črtomir Podlipnik
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Barbara Hribar-Lee
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
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14
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Papagiannopoulos A, Karayianni M, Pispas S, Radulescu A. Formation of complexes in aqueous solutions of amphiphilic triblock polyelectrolytes of different topologies and an oppositely charged protein. SOFT MATTER 2018; 14:2860-2869. [PMID: 29565433 DOI: 10.1039/c8sm00208h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The complexation of lysozyme with aggregates from two triblock amphiphilic polyelectrolytes of the same blocks but different topologies and block molar masses, namely PS-b-SCPI-b-PEO and SCPI-b-PS-b-PEO, is investigated by scattering and spectroscopy methods. Light scattering reveals that the interaction with lysozyme causes shrinkage of the self-assembled nanoparticles in the case of the hydrophobic-polyelectrolyte-hydrophilic sequence. In the polyelectrolyte-hydrophobic-hydrophilic sequence, the opposite trend is observed. Small angle neutron scattering confirms the existence of micellar and fractal aggregates and the complexation with lysozyme. The pH-dependence of the interactions and the stability of the hybrid protein/polymer nanoparticles upon salt addition are tested. The native conformation of the protein is found to be preserved during complexation. This study reveals that both micellar and fractal aggregates made of amphiphilic triblock polyelectrolytes are capable of loading with oppositely charged proteins in a controllable manner, tuned primarily by the structure of the triblock terpolymer.
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Affiliation(s)
- Aristeidis Papagiannopoulos
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.
| | - Maria Karayianni
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.
| | - Aurel Radulescu
- Jülich Centre for Neutron Science JCNS Forschungszentrum Jülich GmbH, Outstation at Heinz Maier-Leibnitz Zentrum (MLZ), Lichtenbergstraße 1, 85747 Garching, Germany
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15
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Valenta T, Lapčíková B, Lapčík L, Li P. The effect of conformational transition of gelatin-polysaccharide polyelectrolyte complex on its functional properties. POTRAVINARSTVO 2017. [DOI: 10.5219/728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The blends of gelatin and shear-thinning hydrocolloids (guar gum, kappa-carrageenan and xanthan gum) were examined to determine the effect of the conformational change on the functional properties of the solutions. The polyelectrolyte complexes of 0.5% gelatin/0.5% polysaccharide in 70 mM KCl or 70 mM NaCl were investigated by the laboratory rheometer and conductivity meter in the temperature range 25 - 45 °C. The rheological data were fitted by the power-law and Herschel-Bulkley model to obtain the flow parameters. The functional properties of the samples were substantially affected by the conformational change of the polysaccharide, as well as by the type of the hydrocolloid and salt solution. There was an evident change of viscosity and conductivity of the solutions upon heating, corresponding to the helix-coil transition of the polysaccharide at temperature about 35 °C. The type of the salt solvent had an effect on the gelation properties of the samples. Gelatin/kappa-carrageenan blend in NaCl provided a gel of high consistency at ambient temperature (20 - 25 °C), whereas the blend in KCl did not gel in the studied temperature range. The potential stability of the blends was determined by zeta-potential analysis. The low values of ζ-potential indicate that the gelatin/polysaccharide blends are electrically unstable systems which tend to coagulate. The mixtures of gelatin/polysaccharide electrostatic complexes may have a great potential in many food applications.
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Cao Y, Li S, Fang Y, Nishinari K, Phillips GO. Conformational Transition of Polyelectrolyte As Influenced by Electrostatic Complexation with Protein. Biomacromolecules 2016; 17:3949-3956. [DOI: 10.1021/acs.biomac.6b01335] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yiping Cao
- Glyn O. Phillips Hydrocolloid Research Centre, School of Food and
Biological Engineering and ‡Hubei Collaborative Innovation Centre for Industrial
Fermentation, Hubei University of Technology, Wuhan 430068, China
| | - Shugang Li
- Glyn O. Phillips Hydrocolloid Research Centre, School of Food and
Biological Engineering and ‡Hubei Collaborative Innovation Centre for Industrial
Fermentation, Hubei University of Technology, Wuhan 430068, China
| | - Yapeng Fang
- Glyn O. Phillips Hydrocolloid Research Centre, School of Food and
Biological Engineering and ‡Hubei Collaborative Innovation Centre for Industrial
Fermentation, Hubei University of Technology, Wuhan 430068, China
| | - Katsuyoshi Nishinari
- Glyn O. Phillips Hydrocolloid Research Centre, School of Food and
Biological Engineering and ‡Hubei Collaborative Innovation Centre for Industrial
Fermentation, Hubei University of Technology, Wuhan 430068, China
| | - Glyn O. Phillips
- Glyn O. Phillips Hydrocolloid Research Centre, School of Food and
Biological Engineering and ‡Hubei Collaborative Innovation Centre for Industrial
Fermentation, Hubei University of Technology, Wuhan 430068, China
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