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Huang Y, Zhang L, Hu J, Liu H. Improved Loading Capacity and Viability of Probiotics Encapsulated in Alginate Hydrogel Beads by In Situ Cultivation Method. Foods 2023; 12:foods12112256. [PMID: 37297500 DOI: 10.3390/foods12112256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/18/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
The objective of this research was to encapsulate probiotics by alginate hydrogel beads based on an in situ cultivation method and investigate the influences on the cell loading capacity, surface and internal structure of hydrogel beads and in vitro gastrointestinal digestion property of cells. Hydrogel beads were prepared by extrusion and cultured in MRS broth to allow probiotics to grow inside. Up to 10.34 ± 0.02 Log CFU/g of viable cell concentration was obtained after 24 h of in situ cultivation, which broke through the bottleneck of low viable cell counts in the traditional extrusion method. Morphology and rheological analyses showed that the structure of the eventually formed probiotic hydrogel beads can be loosed by the existence of hydrogen bond interaction with water molecules and the internal growth of probiotic microcolonies, while it can be tightened by the acids metabolized by the probiotic bacteria during cultivation. In vitro gastrointestinal digestion analysis showed that great improvement with only 1.09 Log CFU/g of loss in viable cells was found after the entire 6 h of digestion. In conclusion, the current study demonstrated that probiotic microcapsules fabricated by in situ cultivation method have the advantages of both high loading capacity of encapsulated viable cells and good protection during gastrointestinal digestion.
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Affiliation(s)
- Yachun Huang
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Lin Zhang
- Microbiota I-Center (MagIC), The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Centre for Gut Microbiota Research, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jielun Hu
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Huan Liu
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
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Beheshtizadeh N, Farzin A, Rezvantalab S, Pazhouhnia Z, Lotfibakhshaiesh N, Ai J, Noori A, Azami M. 3D printing of complicated GelMA-coated Alginate/Tri-calcium silicate scaffold for accelerated bone regeneration. Int J Biol Macromol 2023; 229:636-653. [PMID: 36586652 DOI: 10.1016/j.ijbiomac.2022.12.267] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/16/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022]
Abstract
Polymer-based composite scaffolds are an attractive class of biomaterials due to their suitable physical and mechanical performance as well as appropriate biological properties. When such composites contain osteoinductive ceramic nanopowders, it is possible, in principle, to stimulate the seeded cells to differentiate into osteoblasts. However, reproducibly fabricating and developing an appropriate niche for cells' activities in three-dimensional (3D) scaffolds remains a challenge using conventional fabrication techniques. Additive manufacturing provides a new strategy for the fabrication of complex 3D structures. Here, an extrusion-based 3D printing method was used to fabricate the Alginate (Alg)/Tri-calcium silicate (C3S) bone scaffolds. To improve physical and biological attributes, scaffolds were coated with gelatin methacryloyl (GelMA), a biocompatible viscose hydrogel. Conducting a combination of experimental techniques and molecular dynamics simulations, it is found that the composition ratio of Alg/C3S governs intermolecular interactions among the polymer and ceramic, affecting the product performance. Investigating the effects of various C3S amounts in the bioinks, the 90/10 composition ratio of Alg/C3S is known as the optimum content in developed bioinks. Accordingly, the printability of high-viscosity inks is boosted by improved hierarchical interactions among assemblies, which in turn leads to better nanoscale alignment in extruded macroscopic filaments. Conducting multiple tests on specimens, the GelMA-coated Alg/C3S scaffolds (with a composition ratio of 90/10) were shown to have improved mechanical qualities and cell adhesion, spreading, proliferation, and osteogenic differentiation, compared to the bare scaffolds, making them better candidates for further future research. Overall, the in-silico and in vitro studies of GelMA-coated 3D-printed Alg/C3S scaffolds open new aspects for biomaterials aimed at the regeneration of large- and complicated-bone defects through modifying the extrusion-based 3D-printed constructs.
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Affiliation(s)
- Nima Beheshtizadeh
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Ali Farzin
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Sima Rezvantalab
- Renewable Energies Department, Faculty of Chemical Engineering, Urmia University of Technology, 57166-419 Urmia, Iran
| | - Zahra Pazhouhnia
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Nasrin Lotfibakhshaiesh
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Jafar Ai
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Noori
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Mahmoud Azami
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran; Joint Reconstruction Research Center (JRRC), Tehran University of Medical Sciences, Tehran, Iran.
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3
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Li ZJ, Srebnik S, Rojas OJ. Competing Effects of Hydration and Cation Complexation in Single-Chain Alginate. Biomacromolecules 2022; 23:1949-1957. [PMID: 35362969 DOI: 10.1021/acs.biomac.1c01591] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Alginic acid, a naturally occurring anionic polyelectrolyte, forms strong physically cross-linked hydrogels in the presence of metal cations. The latter engage in electrostatic interactions that compete with intra- and intermolecular hydrogen bonds, determining the gel structure and properties of the system in aqueous media. In this study, we use all-atom molecular dynamics simulations to systematically analyze the interactions between alginic acid chains and Na+ and Ca2+ counterions. The formed alginates originate from the competition of intramolecular hydrogen bonding and water coordination around the polyelectrolyte. In contrast to the established interpretation, we show that calcium cations strongly bind to alginate by disrupting hydrogen bonds within (1 → 4)-linked β-d-mannuronate (M) residues. On the other hand, Na+ cations enhance intramolecular hydrogen bonds that stabilize a left-hand, fourfold helical chain structure in poly-M alginate, resulting in stiffer chains. Hence, the traditionally accepted flexible flat-chain model for poly-M sequence is not valid in the presence of Na+. The two cations have a distinct effect on water coordination around alginate and therefore on its solubility. While Ca+ disrupts water coordination directly around the alginate chains, mobile Na+ cations significantly disrupt the second hydration layer.
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Affiliation(s)
- Zezhong John Li
- Department of Chemical and Biological Engineering University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada.,Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Simcha Srebnik
- Department of Chemical and Biological Engineering University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Orlando J Rojas
- Department of Chemical and Biological Engineering University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada.,Bioproducts Institute, Department of Chemistry and Department of Wood Science, University of British Columbia, 2385 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
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Li ZJ, Srebnik S, Rojas OJ. Revisiting Cation Complexation and Hydrogen Bonding of Single-Chain Polyguluronate Alginate. Biomacromolecules 2021; 22:4027-4036. [PMID: 34461721 DOI: 10.1021/acs.biomac.1c00840] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Modifying the properties of bio-based materials has garnered increasing interest in recent years. In related applications, the ability of alginates to complex with metal ions has been shown to be effective in liquid-to-gel transitions, useful in the development of foodstuff and pharma products as well as biomaterials, among others. However, despite its ubiquitous use, alginate behavior as far as interactions with cations is not fully understood. Hence, this study presents a detailed comparison of alginate's complexation with Na+ and Ca2+ and the involved intramolecular hydrogen bonding and biomolecular chain geometry. Using all-atom molecular dynamics simulations, we find that in contrast to accepted models, calcium cations strongly bind to alginate chains by disruption of hydrogen bonds between neighboring residues, stabilizing a left-hand, 3-fold helical chain structure that enhances chain stiffness. Hence, while present, the traditionally accepted egg-box binding mode was a minor subset of possible conformations. For a single chain, most of the cation binding occurred as single-cation interaction with a carboxyl group, without the coordination of other alginate oxygens. The monovalent Na+ ions were found to be mostly nonlocalized around alginate and therefore do not compete with intramolecular hydrogen bonding. The different binding modes observed for Na+ and Ca2+ contribute toward explaining the different solubility of sodium and calcium alginate.
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Affiliation(s)
- Zezhong John Li
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, British Columbia, Canada V6T 1Z3.,Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Simcha Srebnik
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, British Columbia, Canada V6T 1Z3
| | - Orlando J Rojas
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, British Columbia, Canada V6T 1Z3.,Bioproducts Institute and Departments of Chemistry and Wood Science, University of British Columbia, 2385 East Mall, Vancouver, British Columbia, Canada V6T 1Z4
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Siahaan P, Sasongko NA, Lusiana RA, Prasasty VD, Martoprawiro MA. The validation of molecular interaction among dimer chitosan with urea and creatinine using density functional theory: In application for hemodyalisis membrane. Int J Biol Macromol 2020; 168:339-349. [PMID: 33309669 DOI: 10.1016/j.ijbiomac.2020.12.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 11/16/2020] [Accepted: 12/06/2020] [Indexed: 01/06/2023]
Abstract
The formation of chitosan dimer and its interaction with urea and creatinine have been investigated at the density functional theory (DFT) level (B3LYP-D3/6-31++G**) to study the transport phenomena in hemodialysis membrane. The interaction energy of chitosan-creatinine and chitosan-urea complexes are in range -4 kcal/mol < interaction energy <-20 kcal/mol which were classified in medium hydrogen bond interaction. The chemical reactivity parameter proved that creatinine was more electrophilic and easier to bind chitosan than urea. The energy gap of HOMO-LUMO of chitosan-creatinine complex was lower than chitosan-urea complex that indicating chitosan-creatinine complex was more reactive and easier to transport electron than chitosan-urea complex. Moreover, the natural bond orbital (NBO) analysis showed a high contribution of hydrogen bond between chitosan-creatinine and chitosan-urea. The chitosan-creatinine interaction has a stronger hydrogen bond than chitosan-urea through the interaction O18-H34....N56 with stabilizing energy = -13 kcal/mol. The quantum theory atom in molecule (QTAIM) also supported NBO data. All data presented that creatinine can make hydrogen bond interaction stronger with chitosan than urea, that indicated creatinine easier to transport in the chitosan membrane than urea during hemodialysis process.
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Affiliation(s)
- Parsaoran Siahaan
- Department of Chemistry, Faculty Science and Mathematics, Diponegoro University, 50275 Semarang, Indonesia.
| | | | - Retno Ariadi Lusiana
- Department of Chemistry, Faculty Science and Mathematics, Diponegoro University, 50275 Semarang, Indonesia
| | - Vivitri Dewi Prasasty
- Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, 12930 Jakarta, Indonesia
| | - Muhamad Abdulkadir Martoprawiro
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, 40132 Bandung, Indonesia
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Costa MP, Prates LM, Baptista L, Cruz MT, Ferreira IL. Interaction of polyelectrolyte complex between sodium alginate and chitosan dimers with a single glyphosate molecule: A DFT and NBO study. Carbohydr Polym 2018; 198:51-60. [DOI: 10.1016/j.carbpol.2018.06.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/15/2018] [Accepted: 06/12/2018] [Indexed: 01/08/2023]
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Panczyk K, Gaweda K, Drach M, Plazinski W. Extension of the GROMOS 56a6 CARBO/CARBO_R Force Field for Charged, Protonated, and Esterified Uronates. J Phys Chem B 2018; 122:3696-3710. [PMID: 29558620 DOI: 10.1021/acs.jpcb.7b11548] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An extension of the GROMOS 56a6CARBO/CARBO_R force field for hexopyranose-based carbohydrates is presented. The additional parameters describe the conformational properties of uronate residues. The three distinct chemical states of the carboxyl group are considered: deprotonated (negatively charged), protonated (neutral), and esterified (neutral). The parametrization procedure was based on quantum-chemical calculations, and the resulting parameters were tested in the context of (i) flexibility of the pyranose rings under different pH conditions, (ii) conformation of the glycosidic linkage of the (1 → 4)-type for uronates with different chemical states of carboxyl moieties, (iii) conformation of the exocyclic (i.e., carboxylate and lactol) moieties, and (iv) structure of the Ca2+-linked chain-chain complexes of uronates. The presently proposed parameters in combination with the 56a6CARBO/CARBO_R set can be used to describe the naturally occurring polyuronates, composed either of homogeneous (e.g., glucuronans) or heterogeneous (e.g., pectins, alginates) segments. The results of simulations relying on the new set of parameters indicate that the conformation of glycosidic linkage is nearly unaffected by the chemical state of the carboxyl group, in contrary to the ring conformational equilibria. The calculations for the poly(α-d-galacturonate)-Ca2+ and poly(α-l-guluronate)-Ca2+ complexes show that both parallel and anitiparallel arrangements of uronate chains are possible but differ in several structural aspects.
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Affiliation(s)
- Karina Panczyk
- Jerzy Haber Institute of Catalysis and Surface Chemistry , Polish Academy of Sciences , ul. Niezapominajek 8 , 30-239 Cracow , Poland
| | - Karolina Gaweda
- Jerzy Haber Institute of Catalysis and Surface Chemistry , Polish Academy of Sciences , ul. Niezapominajek 8 , 30-239 Cracow , Poland
| | - Mateusz Drach
- Department of Theoretical Chemistry, Faculty of Chemistry , M. Curie-Sklodowska University , pl. M. Curie-Sklodowskiej 3 , 20-031 Lublin , Poland
| | - Wojciech Plazinski
- Jerzy Haber Institute of Catalysis and Surface Chemistry , Polish Academy of Sciences , ul. Niezapominajek 8 , 30-239 Cracow , Poland
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Sequence-dependent association of alginate with sodium and calcium counterions. Carbohydr Polym 2017; 157:1144-1152. [DOI: 10.1016/j.carbpol.2016.10.081] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 10/09/2016] [Accepted: 10/15/2016] [Indexed: 11/18/2022]
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Hecht H, Srebnik S. Structural Characterization of Sodium Alginate and Calcium Alginate. Biomacromolecules 2016; 17:2160-7. [PMID: 27177209 DOI: 10.1021/acs.biomac.6b00378] [Citation(s) in RCA: 257] [Impact Index Per Article: 32.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Alginate readily aggregates and forms a physical gel in the presence of cations. The association of the chains, and ultimately gel structure and mechanics, depends not only on ion type, but also on the sequence and composition of the alginate chain that ultimately determines its stiffness. Chain flexibility is generally believed to decrease with guluronic residue content, but it is also known that both polymannuronate and polyguluronate blocks are stiffer than heteropolymeric blocks. In this work, we use atomistic molecular dynamics simulation to primarily explore the association and aggregate structure of different alginate chains under various Ca(2+) concentrations and for different alginate chain composition. We show that Ca(2+) ions in general facilitate chain aggregation and gelation. However, aggregation is predominantly affected by alginate monomer composition, which is found to correlate with chain stiffness under certain solution conditions. In general, greater fractions of mannuronic monomers are found to increase chain flexibility of heteropolymer chains. Furthermore, differences in chain guluronic acid content are shown to lead to different interchain association mechanisms, such as lateral association, zipper mechanism, and entanglement, where the mannuronic residues are shown to operate as an elasticity moderator and therefore promote chain association.
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Affiliation(s)
- Hadas Hecht
- The Interdisciplinary Program in Polymer Engineering and ‡Department of Chemical Engineering, Technion - Israel Institute of Technology , Haifa, Israel 32000
| | - Simcha Srebnik
- The Interdisciplinary Program in Polymer Engineering and ‡Department of Chemical Engineering, Technion - Israel Institute of Technology , Haifa, Israel 32000
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Menakbi C, Quignard F, Mineva T. Complexation of Trivalent Metal Cations to Mannuronate Type Alginate Models from a Density Functional Study. J Phys Chem B 2016; 120:3615-23. [DOI: 10.1021/acs.jpcb.6b00472] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chemseddine Menakbi
- Institut
Charles Gerhardt
Montpellier, CNRS/ENSCM/UM1/UM2, 8 rue de l’Ecole Normale, 34296 Montpellier, Cédex
5, France
| | - Francoise Quignard
- Institut
Charles Gerhardt
Montpellier, CNRS/ENSCM/UM1/UM2, 8 rue de l’Ecole Normale, 34296 Montpellier, Cédex
5, France
| | - Tzonka Mineva
- Institut
Charles Gerhardt
Montpellier, CNRS/ENSCM/UM1/UM2, 8 rue de l’Ecole Normale, 34296 Montpellier, Cédex
5, France
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Synthesis and modeling of calcium alginate nanoparticles in quaternary water-in-oil microemulsions. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.083] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Binding of heavy metals by algal biosorbents. Theoretical models of kinetics, equilibria and thermodynamics. Adv Colloid Interface Sci 2013; 197-198:58-67. [PMID: 23688631 DOI: 10.1016/j.cis.2013.04.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 04/09/2013] [Accepted: 04/15/2013] [Indexed: 11/20/2022]
Abstract
Biosorption is an extensively studied technology applied for the removal of heavy metal ions and other pollutants from aqueous solutions. Most biosorption research is focused on the experimentally measured sorption isotherms, kinetics and thermodynamics. The aim of this paper is to review a class of theoretical models developed for the interpretation of such experimental data related to biosorption of metal cations by alginate-containing sorbents (e.g. algal biosorbents). The focus is put on: (i) modeling the biosorption equilibrium isotherms (including the description of the pH and ionic strength effects); (ii) thermodynamics of biosorption; (iii) kinetics of biosorption; and (iv) metal ion binding modes. This review facilitates the choice of the model suitable for the given type of data and describes the most common mistakes made during the data analysis (e.g. the use of incorrect or oversimplified models).
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