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Song J, Li J, Zhong J, Guo Z, Xu J, Chen X, Qiu M, Lin J, Han L, Zhang D. An oral gel suitable for swallowing: The effect of micronization on the gel properties and microstructure of κ-carrageenan. Int J Biol Macromol 2024; 271:132708. [PMID: 38815948 DOI: 10.1016/j.ijbiomac.2024.132708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
κ-Carrageenan (κ-Car) is an important material for preparing food gels and hydrogels. However, κ-Car gel has issues with high hardness and low water-holding capacity. Modification strategy of micronization is proposed for the first time to explore its influence on texture properties and gelling process of κ-Car gel, and to investigate the feasibility of κ-Car as a food matrix with low strength. κ-Car undergoing 60 min of micronization, the d(0.9) decreased by 79.33 %, SBET and Vtotal increased by 89.23 % and 95.27 %. The swelling rate and degree of gelling process increased significantly, and the microstructure changed from loose large pores to dense small pores resembling a "honeycomb". Importantly, the hardness of gel-60, Milk-60 and PNS-60 decreased by 72.52 %, 49.25 % and 81.37 %. In addition, WHC of gel-60, Milk-60 and PNS-60 was improved. IDDSI tests showed that κ-Car gels, milk gels and PNS gels can be categorized as level 6 (soft and bite-sized), except for PNS-60, which belongs to level 5 (crumbly and moist). Furthermore, the texture and bitter masking effect of milk gels and PNS gels were improved. In conclusion, this study demonstrated that micronization can be a novel approach to improve the gel properties of κ-Car, laying the groundwork for developing dysphagia foods.
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Affiliation(s)
- Jiao Song
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Jiaxin Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Jingping Zhong
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Zhiping Guo
- Sichuan HouDe Pharmaceutical Technology Co., Ltd., Chengdu 611730, PR China
| | - Jia Xu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Xinglv Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Min Qiu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Junzhi Lin
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, PR China.
| | - Li Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China.
| | - Dingkun Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China; Sichuan Provincial Engineering Research Center of Innovative Re-development of Famous Classical Formulas, Tianfu TCM Innovation Harbour, Chengdu University of Traditional Chinese Medicine, Pengzhou 611900, PR China.
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2
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Ye J, Hua X, Shao X, Yang R. Acid-induced conformation regulation of peanut polysaccharide and its effect on stability and digestibility of oil-in-water emulsion. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:2704-2717. [PMID: 37997448 DOI: 10.1002/jsfa.13155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/28/2023] [Accepted: 11/23/2023] [Indexed: 11/25/2023]
Abstract
BACKGROUND Developing the stable and healthy emulsion-based food is in accord with the needs of people for health. In the present study, acidification at pH 3.0 of peanut polysaccharide (APPSI) was employed to regulate its conformation and further improve its advantages in preparing oil-in-water emulsion. RESULTS The results indicated that acidification induced conversion of PPSI aggregates into linear chains. Increasing concentration promoted formation of cross-linked network structure shown in transmission electron microscopy images. Consequently, the viscosity, yield stress, storage modulus and flow activation energy significantly increased, further fabricating gel structure. Moreover, aggregation behavior suggested that more exposed proteins were involved in gel structure, thereby forming many hydrophobic cores as verified by fluorescence spectroscopy of pyrene. Afterwards, emulsion characteristics indicated that APPSI produced strong and thick steric hindrance around oil droplets and the coil-like interweaved chains locked the continuous phase, bringing strong elasticity and resistance to stress and creaming. Meanwhile, the lower fatty acid in APPSI-emulsion was released after simulated gastrointestinal digestion, mainly as a result of the high retention ratio of emulsion droplets. Furthermore, the elastic and viscous Lissajous curves suggested that the structure strength of APPSI-emulsion was similar to that of the salad dressing within the strain 53.22%. CONCLUSION The conformation of PPSI after acidification at pH 3.0 was suitable for preparing the stable emulsion. The obtained emulsion could resist digestion and maintain a strong structure, comprising a cholesterol-free and low-fat salad dressing substitute. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Jianfen Ye
- College of Food and Pharmaceutical Sciences, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo University, Ningbo, China
| | - Xiao Hua
- State Key Laboratory of Food Science & Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xingfeng Shao
- College of Food and Pharmaceutical Sciences, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo University, Ningbo, China
| | - Ruijin Yang
- State Key Laboratory of Food Science & Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
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Martínez-Sabando J, Coin F, Melillo JH, Goyanes S, Cerveny S. A Review of Pectin-Based Material for Applications in Water Treatment. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16062207. [PMID: 36984087 PMCID: PMC10055932 DOI: 10.3390/ma16062207] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 06/12/2023]
Abstract
Climate change and water are inseparably connected. Extreme weather events cause water to become more scarce, polluted, and erratic than ever. Therefore, we urgently need to develop solutions to reduce water contamination. This review intends to demonstrate that pectin-based materials are an excellent route to detect and mitigate pollutants from water, with several benefits. Pectin is a biodegradable polymer, extractable from vegetables, and contains several hydroxyl and carboxyl groups that can easily interact with the contaminant ions. In addition, pectin-based materials can be prepared in different forms (films, hydrogels, or beads) and cross-linked with several agents to change their molecular structure. Consequently, the pectin-based adsorbents can be tuned to remove diverse pollutants. Here, we will summarize the existing water remediation technologies highlighting adsorption as the ideal method. Then, the focus will be on the chemical structure of pectin and, from a historical perspective, on its structure after applying different cross-linking methods. Finally, we will review the application of pectin as an adsorbent of water pollutants considering the pectin of low degree methoxylation.
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Affiliation(s)
- Javier Martínez-Sabando
- Centro de Física de Materiales (CSIC, UPV/EHU)-Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
| | - Francesco Coin
- Centro de Física de Materiales (CSIC, UPV/EHU)-Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
| | - Jorge H. Melillo
- Donostia International Physics Center (DIPC), 20018 San Sebastián, Spain
| | - Silvia Goyanes
- Laboratorio de Polímeros y Materiales Compuestos (LP&MC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires 1113, Argentina
- Instituto de Física de Buenos Aires (IFIBA), CONICET—Universidad de Buenos Aires, Ciudad Universitaria (C1428EGA), Buenos Aires 1113, Argentina
| | - Silvina Cerveny
- Centro de Física de Materiales (CSIC, UPV/EHU)-Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- Donostia International Physics Center (DIPC), 20018 San Sebastián, Spain
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4
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Hotton C, Ducouret G, Sirieix-Plénet J, Bizien T, Porcar L, Malikova N. Tuning Structure and Rheological Properties of Polyelectrolyte-Based Hydrogels through Counterion-Specific Effects. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c01565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Claire Hotton
- Laboratory of Physical Chemistry of Electrolytes and Interfacial Nanosystems (PHENIX), Sorbonne Université, CNRS, 75005Paris, France
| | - Guylaine Ducouret
- Laboratory of Soft Matter Sciences and Engineering (SIMM), ESPCI Paris, PSL Research University, CNRS, F-75005Paris, France
| | - Juliette Sirieix-Plénet
- Laboratory of Physical Chemistry of Electrolytes and Interfacial Nanosystems (PHENIX), Sorbonne Université, CNRS, 75005Paris, France
| | - Thomas Bizien
- Synchrotron SOLEIL, l’Orme des Merisiers, Saint-Aubin - BP 48, 91192Gif-sur-Yvette, CEDEX, France
| | - Lionel Porcar
- Large Scale Structures, Institut Laue Langevin, GrenobleF-38042, France
| | - Natalie Malikova
- Laboratory of Physical Chemistry of Electrolytes and Interfacial Nanosystems (PHENIX), Sorbonne Université, CNRS, 75005Paris, France
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Maryjose N, Custovic I, Chaabane L, Lesniewska E, Piétrement O, Chambin O, Assifaoui A. Core-shell polygalacturonate magnetic iron oxide nanoparticles: Synthesis, characterization, and functionalities. Int J Biol Macromol 2022; 220:360-370. [PMID: 35932808 DOI: 10.1016/j.ijbiomac.2022.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This work aims to synthesize polygalacturonate-based magnetic iron oxide nanoparticles (INP-polyGalA). The synthesis consists of the diffusion of both Fe2+ and Fe3+ at a molar ratio of 1:2 through polyGalA solution followed by the addition of an alkaline solution. To form individual nanoparticle materials, the polyGalA concentration needs to be below its overlapping concentration (C*). The synthesized materials (INP-polyGalA) contain about 45 % of organic compound (polyGalA), and they have an average particle size ranging from 10 to 50 nm as estimated by several techniques (DLS, TEM and AFM) and their surfaces are negatively charged in pH range 2 to 7. The synthesized NPs showed magnetic characteristics, thanks to the formation of magnetite (Fe3O4) as confirmed by X-ray diffractions (XRD). Moreover, AFM combined with Infra-red mapping allowed us to conclude that polyGalA is located in the core of the nanoparticles but also on their surfaces. More specially, both carboxylate (COO-) and carboxylic (COOH) groups of polyGalA are observed on the NPs surfaces. The presence of such functional groups allowed the synthesized material to (i) bind through the electrostatic interactions methylene blue (MB) which may have a great potential for r pollution control or (ii) to form hydrogel beads (ionotropic gelation) by using calcium as a crosslinking agent which can be used to encapsulate active molecules and target their release by using an external stimulus (magnetic field).
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Affiliation(s)
- Navya Maryjose
- Université de Bourgogne Franche Comté (UBFC), Institut Agro Dijon, UMR PAM A 02.102, F-21000 Dijon, France
| | - Irma Custovic
- Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR CNRS 6303, Université de Bourgogne-Franche-Comté, 21078 Dijon Cedex, France
| | - Laroussi Chaabane
- Université de Bourgogne Franche Comté (UBFC), Institut Agro Dijon, UMR PAM A 02.102, F-21000 Dijon, France
| | - Eric Lesniewska
- Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR CNRS 6303, Université de Bourgogne-Franche-Comté, 21078 Dijon Cedex, France
| | - Olivier Piétrement
- Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR CNRS 6303, Université de Bourgogne-Franche-Comté, 21078 Dijon Cedex, France
| | - Odile Chambin
- Université de Bourgogne Franche Comté (UBFC), Institut Agro Dijon, UMR PAM A 02.102, F-21000 Dijon, France; Department of Pharmaceutical Technology, School of Pharmacy, Université de Bourgogne Franche Comté, 7 Bd Jeanne d'Arc, 21079 Dijon, France
| | - Ali Assifaoui
- Université de Bourgogne Franche Comté (UBFC), Institut Agro Dijon, UMR PAM A 02.102, F-21000 Dijon, France; Department of Pharmaceutical Technology, School of Pharmacy, Université de Bourgogne Franche Comté, 7 Bd Jeanne d'Arc, 21079 Dijon, France.
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6
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Ning Y, Lu F, Liu Y, Yang S, Wang F, Ji X, He Z. Glow-type chemiluminescent hydrogels for point-of-care testing (POCT) of cholesterol. Analyst 2021; 146:4775-4780. [PMID: 34231558 DOI: 10.1039/d1an00676b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Cholesterol is an essential compound for human health, and a high or low concentration of cholesterol is closely related to various diseases. Thus, developing a simple method for POCT of cholesterol has great significance in clinical diagnosis. In this work, alginate (Alg) hydrogels with glow-type chemiluminescence (CL) were prepared and applied for rapid and quantitative cholesterol detection via a smartphone. The glow-type CL hydrogels (HRP/COD/luminol/Alg hydrogels) contained luminol as a chemiluminescent reagent, horseradish peroxidase (HRP) and cholesterol oxidase (COD) for enzymatic cascade reactions. The HRP/COD/luminol/Alg hydrogels exhibited outstanding stability, which effectively avoided the enzyme inactivation during long-term storage. Furthermore, the HRP/COD/luminol/Alg hydrogels exhibited longer and more stable glow-type CL. With the help of COD catalytic specificity for cholesterol and bi-enzymatic cascade reactions, the glow-type CL hydrogels realized the specific and sensitive detection of cholesterol. The smartphone was used as a detector instead of a special large instrument for responding to the glow-type CL emission, and a LOD of 7.2 μM was obtained. Therefore, the proposed sensor expands the application of the glow-type CL in POCT and provides an alternative way for cholesterol detection in clinical diagnosis.
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Affiliation(s)
- Yu Ning
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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7
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Yu XD, Li JH, Li H, Huang J, Caccavo D, Lamberti G, Chu LQ. Gelation process of carboxymethyl chitosan-zinc supramolecular hydrogel studied with fluorescence imaging and mathematical modelling. Int J Pharm 2021; 605:120804. [PMID: 34144132 DOI: 10.1016/j.ijpharm.2021.120804] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/01/2021] [Accepted: 06/12/2021] [Indexed: 11/19/2022]
Abstract
Herein we report on a detailed study about the gelation kinetics of carboxymethyl chitosan-zinc (CMCh-Zn) supramolecular hydrogel by taking advantage of its intrinsic fluorescence property. A specific gelation device is designed and the gel front can be directly visualized under 365 nm UV light. The results show that when increasing Zn2+ concentration from 0.1 M to 1.0 M, the apparent diffusion coefficient increases gradually from 2.72 × 10-6 cm2/s to 4.50 × 10-6 cm2/s. The gelation kinetics then is described with a "zero order" mathematical model, proving that the gel thickness is related to the square root of the gelation time and the diffusion step is the controlling step of the gelation process. Later a more advanced model, developed in 1D geometry and solved numerically, is used to describe and predict experimental results, proving its reliability and the correct description of all the phenomena involved in the gelation process of CMCh-Zn hydrogel.
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Affiliation(s)
- Xu-Dong Yu
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Jia-Hui Li
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Heng Li
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Ju Huang
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China
| | - Diego Caccavo
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy; Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy; Eng4Life Srl, Academic spin-off, Via Fiorentino, 32, 83100 Avellino, Italy.
| | - Gaetano Lamberti
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano (SA) 84084, Italy; Eng4Life Srl, Academic spin-off, Via Fiorentino, 32, 83100 Avellino, Italy
| | - Li-Qiang Chu
- College of Chemical Engineering and Materials Science, Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin University of Science and Technology, No. 29, 13(th) Avenue, TEDA, Tianjin 300457, China.
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Sharratt WN, Lopez CG, Sarkis M, Tyagi G, O’Connell R, Rogers SE, Cabral JT. Ionotropic Gelation Fronts in Sodium Carboxymethyl Cellulose for Hydrogel Particle Formation. Gels 2021; 7:44. [PMID: 33921260 PMCID: PMC8167666 DOI: 10.3390/gels7020044] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/06/2021] [Accepted: 04/08/2021] [Indexed: 11/17/2022] Open
Abstract
Hydrogel microparticles (HMPs) find numerous practical applications, ranging from drug delivery to tissue engineering. Designing HMPs from the molecular to macroscopic scales is required to exploit their full potential as functional materials. Here, we explore the gelation of sodium carboxymethyl cellulose (NaCMC), a model anionic polyelectrolyte, with Fe3+ cations in water. Gelation front kinetics are first established using 1D microfluidic experiments, and effective diffusive coefficients are found to increase with Fe3+ concentration and decrease with NaCMC concentrations. We use Fourier Transform Infrared Spectroscopy (FTIR) to elucidate the Fe3+-NaCMC gelation mechanism and small angle neutron scattering (SANS) to spatio-temporally resolve the solution-to-network structure during front propagation. We find that the polyelectrolyte chain cross-section remains largely unperturbed by gelation and identify three hierarchical structural features at larger length scales. Equipped with the understanding of gelation mechanism and kinetics, using microfluidics, we illustrate the fabrication of range of HMP particles with prescribed morphologies.
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Affiliation(s)
- William N. Sharratt
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK; (M.S.); (G.T.); (R.O.)
| | - Carlos G. Lopez
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany;
| | - Miriam Sarkis
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK; (M.S.); (G.T.); (R.O.)
| | - Gunjan Tyagi
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK; (M.S.); (G.T.); (R.O.)
| | - Róisín O’Connell
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK; (M.S.); (G.T.); (R.O.)
| | - Sarah E. Rogers
- ISIS, Rutherford Appleton Laboratory, Harwell, Didcot OX11 0QX, UK;
| | - João T. Cabral
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK; (M.S.); (G.T.); (R.O.)
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9
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Maire du Poset A, Börjesson M, Rameau C, Madeleine-Perdrillat C, Lerbret A, Loupiac C, Cousin F, Assifaoui A. Controlled Loading and Release of Beta-Lactoglobulin in Calcium-Polygalacturonate Hydrogels. Biomacromolecules 2020; 21:1417-1426. [PMID: 32109357 DOI: 10.1021/acs.biomac.9b01722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We show here how the structure of polygalacturonate (polyGalA) hydrogels cross-linked by Ca2+ cations via external gelation controls the loading and release rate of beta-lactoglobulin (BLG), a globular protein. Hydrogels prepared from a polyGalA/BLG solution are found to be similar to those obtained from a polyGalA solution in our previous study (Maire du Poset et al. Biomacromolecules 2019, 20 (7), 2864-2872): they exhibit similar transparencies and gradients of mechanical properties and polyGalA concentrations. The nominal BLG/polyGalA ratio of the mixtures is almost recovered within the whole mixed hydrogel despite such strong concentration gradients, except in the part of the hydrogels with the largest mesh size, where more BLG proteins are present. This gradient enables one to tune the amount of protein loaded within the hydrogel. At a local scale, the proteins are distributed evenly within the hydrogel network, as shown by small-angle neutron scattering (SANS). The release of proteins from hydrogels is driven by Fickian diffusion, and the release rate increases with the mesh size of the network, with a characteristic time of a few hours. The specific structure of these polysaccharide-based hydrogels allows for control of both the dosage and the release rate of the loaded protein and makes them good candidates for use as oral controlled-delivery systems.
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Affiliation(s)
- Aline Maire du Poset
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France.,Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France.,Synchrotron SOLEIL, L'Orme des Merisiers, BP 48 St Aubin, 91192 Gif-sur-Yvette, France
| | - Mikaela Börjesson
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France.,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, SE-412 96 Göteborg, Sweden
| | - Céline Rameau
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France
| | | | - Adrien Lerbret
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France
| | - Camille Loupiac
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France.,Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - Fabrice Cousin
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - Ali Assifaoui
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France
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10
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Nele V, Schutt CE, Wojciechowski JP, Kit-Anan W, Doutch JJ, Armstrong JPK, Stevens MM. Ultrasound-Triggered Enzymatic Gelation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905914. [PMID: 31922627 PMCID: PMC7180077 DOI: 10.1002/adma.201905914] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/15/2019] [Indexed: 05/18/2023]
Abstract
Hydrogels are formed using various triggers, including light irradiation, pH adjustment, heating, cooling, or chemical addition. Here, a new method for forming hydrogels is introduced: ultrasound-triggered enzymatic gelation. Specifically, ultrasound is used as a stimulus to liberate liposomal calcium ions, which then trigger the enzymatic activity of transglutaminase. The activated enzyme catalyzes the formation of fibrinogen hydrogels through covalent intermolecular crosslinking. The catalysis and gelation processes are monitored in real time and both the enzyme kinetics and final hydrogel properties are controlled by varying the initial ultrasound exposure time. This technology is extended to microbubble-liposome conjugates, which exhibit a stronger response to the applied acoustic field and are also used for ultrasound-triggered enzymatic hydrogelation. To the best of the knowledge, these results are the first instance in which ultrasound is used as a trigger for either enzyme catalysis or enzymatic hydrogelation. This approach is highly versatile and can be readily applied to different ion-dependent enzymes or gelation systems. Moreover, this work paves the way for the use of ultrasound as a remote trigger for in vivo hydrogelation.
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Affiliation(s)
- Valeria Nele
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Carolyn E Schutt
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Jonathan P Wojciechowski
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Worrapong Kit-Anan
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - James J Doutch
- ISIS Neutron and Muon Source, STFC, Rutherford Appleton Laboratory, Didcot, OX11 ODE, UK
| | - James P K Armstrong
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
| | - Molly M Stevens
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK
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11
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Maire du Poset A, Lerbret A, Boué F, Zitolo A, Assifaoui A, Cousin F. Tuning the Structure of Galacturonate Hydrogels: External Gelation by Ca, Zn, or Fe Cationic Cross-Linkers. Biomacromolecules 2019; 20:2864-2872. [PMID: 31180649 DOI: 10.1021/acs.biomac.9b00726] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We show here how the nature of various divalent cations M2+ (Ca2+, Zn2+, or Fe2+) influences the structure and mechanical properties of ionotropic polygalacturonate (polyGal) hydrogels designed by the diffusion of cations along one direction (external gelation). All hydrogels exhibit strong gradients of polyGal and cation concentrations, which are similar for all studied cations with a constant ratio R = [M2+]/[Gal] equal to 0.25, showing that every M2+ cation interacts with four galacturonate (Gal) units all along the gels. The regions of the hydrogels formed in the early stages of the gelation process are also similar for all cations and are homogeneous, with the same characteristic mesh size (75 ± 5 Å, as measured by small angle neutron scattering (SANS)) and the same storage modulus G' (∼5 × 104 Pa). Conversely, in the regions of the gels formed in later stages of the process there exist differences in mechanical properties, turbidity, and local structure from one cation to another. Zn(II)-polyGal and Fe(II)-polyGal hydrogels display mesoscopic heterogeneities, more marked in case of Fe than for Zn, that are not present in Ca(II)-polyGal hydrogels. This comes from the mode and the strength of association between the cation and the Gal unit (bidentate for Ca2+ and monodentate "egg-box" for Zn2+ and Fe2+). Cross-links formed by Zn2+ and Fe2+ have a higher stability (lower ability to untie and reform) that induces the formation of local heterogeneities in the early stages of the gelation process whose size progressively increases during the gel growth, a mechanism that does not occur for cross-links made by Ca2+ that are less stable and enable possible reorganizations between polyGal chains.
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Affiliation(s)
- Aline Maire du Poset
- Université Bourgogne - Franche-Comté , AgroSup Dijon , PAM UMR A 02.102, F-21000 Dijon , France.,Synchrotron SOLEIL , L'Orme des Merisiers, BP 48 St Aubin , 91192 Gif-sur-Yvette , France.,Laboratoire Léon Brillouin , CEA-Saclay , 91191 Gif-sur-Yvette , France
| | - Adrien Lerbret
- Université Bourgogne - Franche-Comté , AgroSup Dijon , PAM UMR A 02.102, F-21000 Dijon , France
| | - François Boué
- Laboratoire Léon Brillouin , CEA-Saclay , 91191 Gif-sur-Yvette , France
| | - Andrea Zitolo
- Synchrotron SOLEIL , L'Orme des Merisiers, BP 48 St Aubin , 91192 Gif-sur-Yvette , France
| | - Ali Assifaoui
- Université Bourgogne - Franche-Comté , AgroSup Dijon , PAM UMR A 02.102, F-21000 Dijon , France
| | - Fabrice Cousin
- Laboratoire Léon Brillouin , CEA-Saclay , 91191 Gif-sur-Yvette , France
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Celus M, Kyomugasho C, Van Loey AM, Grauwet T, Hendrickx ME. Influence of Pectin Structural Properties on Interactions with Divalent Cations and Its Associated Functionalities. Compr Rev Food Sci Food Saf 2018; 17:1576-1594. [PMID: 33350138 DOI: 10.1111/1541-4337.12394] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/29/2018] [Accepted: 08/29/2018] [Indexed: 12/12/2022]
Abstract
Pectin is an anionic cell wall polysaccharide which is known to interact with divalent cations via its nonmethylesterified galacturonic acid units. Due to its cation-binding capacity, extracted pectin is frequently used for several purposes, such as a gelling agent in food products or as a biosorbent to remove toxic metals from waste water. Pectin can, however, possess a large variability in molecular structure, which influences its cation-binding capacity. Besides the pectin structure, several extrinsic factors, such as cation type or pH, have been shown to define the cation binding of pectin. This review paper focuses on the research progress in the field of pectin-divalent cation interactions and associated functional properties. In addition, it addresses the main research gaps and challenges in order to clearly understand the influence of pectin structural properties on its divalent cation-binding capacity and associated functionalities. This review reveals that many factors, including pectin molecular structure and extrinsic factors, influence pectin-cation interactions and its associated functionalities, which makes it difficult to predict the pectin-cation-binding capacity. Despite the limited information available, determination of the cation-binding capacity of pectins with distinct structural properties using equilibrium adsorption experiments or isothermal titration calorimetry is a promising tool to gain fundamental insights into pectin-cation interactions. These insights can then be used in targeted pectin structural modification, in order to optimize the cation-binding capacity and to promote pectin-cation interactions, for instance for a structure build-up in food products without compromising the mineral nutrition value.
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Affiliation(s)
- Miete Celus
- KU Leuven Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, Belgium
| | - Clare Kyomugasho
- KU Leuven Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, Belgium
| | - Ann M Van Loey
- KU Leuven Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, Belgium
| | - Tara Grauwet
- KU Leuven Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, Belgium
| | - Marc E Hendrickx
- KU Leuven Department of Microbial and Molecular Systems (M2S), Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 22, Box 2457, 3001 Leuven, Belgium
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