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Teferra TF. Possible actions of inulin as prebiotic polysaccharide: A review. FOOD FRONTIERS 2021. [DOI: 10.1002/fft2.92] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Affiliation(s)
- Tadesse F. Teferra
- School of Nutrition Food Science and Technology, College of Agriculture Hawassa University Ethiopia
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Mensink MA, Frijlink HW, van der Voort Maarschalk K, Hinrichs WL. Inulin, a flexible oligosaccharide I: Review of its physicochemical characteristics. Carbohydr Polym 2015; 130:405-19. [DOI: 10.1016/j.carbpol.2015.05.026] [Citation(s) in RCA: 263] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 05/08/2015] [Accepted: 05/12/2015] [Indexed: 01/25/2023]
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3
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Beck RH, Huber A. Statistic thermodynamic analysis of fructans – Part 2: Chain configuration parameters of non-branched and branched fructans – Branching structure and molar mass distribution of branched fructans. SUGAR INDUSTRY-ZUCKERINDUSTRIE 2013. [DOI: 10.36961/si13996] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Applying statistical thermodynamic models for chain configurations in combination with linkage analysis, molar mass distribution and small angle X-ray scattering data allow the unambiguous structural elucidation of branched fructans. The radius of gyration of fructans can be accurately predicted by applying a random flight model with bond angle restrictions. The structural factor g has been calculated and correlated with experimental data only allowing a comb shaped structure for branched fructans. A formula for calculating the molar mass distribution of comb shaped branched fructans is proposed. Amalgamation of experimental and theoretical data prove a regular comb shape structure for the branched fructans of U. maritima, L. bulbiferum and A. tequilana.
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Taha HA, Richards MR, Lowary TL. Conformational Analysis of Furanoside-Containing Mono- and Oligosaccharides. Chem Rev 2012; 113:1851-76. [DOI: 10.1021/cr300249c] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hashem A. Taha
- Alberta Glycomics Centre and Department of Chemistry, Gunning−Lemieux Chemistry Centre, University of Alberta, Edmonton, AB, Canada T6G 2G2
| | - Michele R. Richards
- Alberta Glycomics Centre and Department of Chemistry, Gunning−Lemieux Chemistry Centre, University of Alberta, Edmonton, AB, Canada T6G 2G2
| | - Todd L. Lowary
- Alberta Glycomics Centre and Department of Chemistry, Gunning−Lemieux Chemistry Centre, University of Alberta, Edmonton, AB, Canada T6G 2G2
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Barclay T, Ginic-Markovic M, Johnston MR, Cooper PD, Petrovsky N. Analysis of the hydrolysis of inulin using real time 1H NMR spectroscopy. Carbohydr Res 2012; 352:117-25. [PMID: 22464225 PMCID: PMC3324600 DOI: 10.1016/j.carres.2012.03.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 02/28/2012] [Accepted: 03/02/2012] [Indexed: 12/27/2022]
Abstract
The hydrolysis of various carbohydrates was investigated under acidic conditions in real time by (1)H NMR spectroscopy, with a focus on the polysaccharide inulin. Sucrose was used as a model compound to illustrate the applicability of this technique. The hydrolysis of sucrose was shown to follow pseudo first order kinetics and have an activation energy of 107.0 kJ mol(-1) (SD 1.7 kJ mol(-1)). Inulin, pullulan and glycogen also all followed pseudo first order kinetics, but had an initiation phase at least partially generated by the protonation of the glycosidic bonds. It was also demonstrated that polysaccharide chain length has an effect on the hydrolysis of inulin. For short chain inulin (DPn 18, SD 0.70) the activation energy calculated for the hydrolytic cleavage of glucose was similar to sucrose at 108.5 kJ mol(-1) (SD 0.60). For long chain inulin (DPn 30, SD 1.3) the activation energy for the hydrolytic cleavage of glucose was reduced to 80.5 kJ mol(-1) (SD 2.3 kJ mol(-1)). This anomaly has been attributed to varied conformations for the two different lengths of inulin chain in solution.
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Affiliation(s)
- Thomas Barclay
- School of Chemical and Physical Sciences, Flinders University, Adelaide, Australia 5042
| | - Milena Ginic-Markovic
- School of Chemical and Physical Sciences, Flinders University, Adelaide, Australia 5042
| | - Martin R. Johnston
- School of Chemical and Physical Sciences, Flinders University, Adelaide, Australia 5042
| | - Peter D. Cooper
- Cancer Research Laboratory, ANU Medical School at The Canberra Hospital, Australian National University, Canberra, Australia 2605
- Vaxine Pty Ltd, Flinders Medical Centre, Adelaide Australia 5042
| | - Nikolai Petrovsky
- Vaxine Pty Ltd, Flinders Medical Centre, Adelaide Australia 5042
- Department of Endocrinology, Flinders Medical Centre, Adelaide, Australia 5042
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Dan A, Ghosh S, Moulik SP. Physicochemical studies on the biopolymer inulin: a critical evaluation of its self-aggregation, aggregate-morphology, interaction with water, and thermal stability. Biopolymers 2009; 91:687-99. [PMID: 19353642 DOI: 10.1002/bip.21199] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Physicochemical properties viz., aggregation, molar mass, shape, and size of chicory inulin in solution were determined by fluorimetry, DLS, SLS, TEM, and viscometry methods. The thermal stability of the biopolymer was examined by TGA, DTA, and DSC measurements. The water vapor adsorption of desiccated inulin was also studied by the isopiestic method, and the data were analyzed in the light of the BET equation. On the basis of the obstruction to ion conductance by the inulin aggregates in solution and analysis of the data, the extent of hydration of inulin in solution was estimated. The result was coupled with the intrinsic viscosity, [eta], of inulin to ascertain the shape of the biopolymer aggregates in aqueous solution. The critical aggregation concentration (cac) of inulin in aqueous as well as in salt solution was assessed by fluorimetry. The weight average molar mass, Mw , of inulin monomer and its aggregate was found to be 4468 and 1.03 x 10(6) g/mol, respectively, in aqueous solution. This aggregated mass was 2.4 x 10(6) g/mol in 0.5M NH(4)SCN solution. The [eta] values of the soft supramolecular aggregates in solution (without and with salt) were small and comparable with globular proteins evidencing spherical geometry of the biopolymer aggregates as supported by the TEM results. In DMSO, rod-like aggregates of inulin was found by the TEM study. The [eta] of the biopolymer in the DMSO medium was therefore, higher than that in the aqueous medium. Unlike aqueous medium, the aggregation in DMSO was not associated with a cac.
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Affiliation(s)
- Abhijit Dan
- Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700032, India
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Stevens CV, Meriggi A, Booten K. Chemical modification of inulin, a valuable renewable resource, and its industrial applications. Biomacromolecules 2002; 2:1-16. [PMID: 11749147 DOI: 10.1021/bm005642t] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Inulin, the polydisperse reserve polyfructose from plants such as Cichorium intybus (chicory), has been chemically modified in several ways to obtain industrially important biodegradable compounds. This review provides an insight on the different types of modification (neutral, anionic, and cationic modification as well as cross-linking and slow release applications) and describes its differences from starch and cellulose chemistry. It also highlights the applications of various compounds cited in the literature.
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Affiliation(s)
- C V Stevens
- Department of Organic Chemistry, Faculty of Agricultural and Applied Biological Sciences, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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Houseknecht JB, McCarren PR, Lowary TL, Hadad CM. Conformational studies of methyl 3-O-methyl-alpha-D-arabinofuranoside: an approach for studying the conformation of furanose rings. J Am Chem Soc 2001; 123:8811-24. [PMID: 11535088 DOI: 10.1021/ja003768s] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A computational method for probing furanose conformation has been developed using a methylated monosaccharide derivative 1. First, a large library of conformers was generated by a systematic pseudo Monte Carlo search followed by optimization with the AMBER molecular mechanics force field. A subset of these conformers was then subjected to ab initio and density functional theory calculations in both the gas and aqueous phases. These calculations indicate that entropic contributions to the Gibbs free energy are important determinants of the Boltzmann distribution for the conformational preferences of 1 in the gas phase. The results obtained at each level of theory are discussed and compared with the experimentally determined conformer distribution from NMR studies in aqueous solution. In addition, the ability of each level of theory to reproduce the experimentally measured 1H-1H coupling constants in 1 is discussed. Empirical Karplus equations and density functional theory methods were used to determine average 3J(H1,H2), 3J(H2,H3), and 3J(H3,H4) for each level of theory. On the basis of this comparison, consideration of solvation with the MN-GSM model provided good agreement with the experimental data.
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Affiliation(s)
- J B Houseknecht
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, USA
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D'Souza FW, Ayers JD, McCarren PR, Lowary TL. Arabinofuranosyl Oligosaccharides from Mycobacteria: Synthesis and Effect of Glycosylation on Ring Conformation and Hydroxymethyl Group Rotamer Populations. J Am Chem Soc 2000. [DOI: 10.1021/ja993543l] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Francis W. D'Souza
- Contribution from the Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Joseph D. Ayers
- Contribution from the Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Patrick R. McCarren
- Contribution from the Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Todd L. Lowary
- Contribution from the Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
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Hébette CL, Delcour JA, Koch MH, Booten K, Kleppinger R, Mischenko N, Reynaers H. Complex melting of semi-crystalline chicory (Cichorium intybus L.) root inulin. Carbohydr Res 1998; 310:65-75. [PMID: 9794072 DOI: 10.1016/s0008-6215(98)00154-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
When concentrated solutions (30-45% by weight) of inulin (degree of polymerization 2-66, number average degree of polymerization 12) are cooled at 1 degree C/min or 0.25 degree C/min from 96 degrees C to 20 degrees C, suspensions of semi-crystalline material in water are formed. A thermal nucleation process was detected by optical microscopy: the 8-like shaped crystallites resulting from primary nucleation at higher temperature are larger than those resulting from secondary nucleation at lower temperature. Differential scanning calorimetry (DSC) thermograms display melting profiles with three to four partly overlapping endotherms that vary as a function of concentration, cooling rate during crystallization and storage time at 25 degrees C of the crystallite suspension. Recrystallization during melting was observed. The wide-angle X-ray scattering patterns of the samples at 25 degrees C correspond to those of the hydrated crystal polymorph. The structural changes during melting indicated the existence of a single crystal polymorph throughout melting. A periodicity of 95 A, arising from alternating regions of different electron density, is detected in the small angle X-ray scattering patterns at 25 degrees C. The stepwise increase of the long period upon heating is related to the existence of two types of lamellar stacks: one with a higher long period, resulting from the primary nucleation and thus crystallized at high temperature, and a second one with a smaller long period, formed by crystallization at lower temperature. The lamellae formed at low temperature melt at a lower temperature than those formed at high temperature, explaining the existence of the two DSC-endotherms.
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Affiliation(s)
- C L Hébette
- Laboratorium voor Levensmiddelenchemie, Katholieke Universiteit Leuven, Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen, Heverlee, Belgium
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Timmermans JW, Bitter MG, de Wit D, Vliegenthart JF. The Interaction of Inulin Oligosaccharides with Ba2+Studied by1H NMR Spectroscopy. J Carbohydr Chem 1997. [DOI: 10.1080/07328309708006522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Johnson L, Verraest DL, Besemer AC, van Bekkum H, Peters JA. Complexation of Ln(III) and Ca(II) Cations with 3,4-Dicarboxyinulin and Model Compounds: Methyl 3,4-Dicarboxy-alpha-D-fructofuranoside and 3,4-Dicarboxynystose, As Studied by Multinuclear Magnetic Resonance Spectroscopy and Potentiometry. Inorg Chem 1996; 35:5703-5710. [PMID: 11666765 DOI: 10.1021/ic960103b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Complexes of Ln(III) and Ca(II) cations with 3,4-dicarboxyinulin (DCI) and model compounds, methyl 3,4-dicarboxy-alpha-D-fructofuranoside (DCF) and 3,4-dicarboxynystose (DCN) were studied using multinuclear magnetic resonance spectroscopy and potentiometric methods. Complexes of the model compounds with Ln(III) ions provided a feasible way in which to study complexation phenomena of the dicarboxyinulin/Ca(II) system using NMR techniques. Information on complex geometry was derived from the effect of Ln(III) ions on chemical shifts and longitudinal relaxation rates. Metal-ligand stoichiometries of 1:2 and 1:1, in which the ligand coordination was tridentate as well as tetradentate, were found. Potentiometric measurements carried out with Ca(II) yielded information on the stoichiometry as well as the cooperativity of metal ion binding by the ligands.
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Affiliation(s)
- Louise Johnson
- Laboratory of Organic Chemistry and Catalysis, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands, and TNO Biotechnology and Chemistry Institute, P.O. Box 360, 3700 AJ Zeist, The Netherlands
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André I, Putaux JL, Chanzy H, Taravel FR, Timmermans JW, de Wit D. Single crystals of inulin. Int J Biol Macromol 1996; 18:195-204. [PMID: 8729031 DOI: 10.1016/0141-8130(95)01075-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Lamellar crystals of inulin were grown by crystallizing sharp fractions of low molecular weight inulin from dilute aqueous ethanol solutions. The crystals were analyzed using three-dimensional electron diffraction and X-ray powder diagrams. Two crystalline polymorphs were observed, depending on the hydration conditions: a hydrated form which indexed on an orthorhombic unit cell, with space group P2(1)2(1)2(1) and with cell dimensions of a = 1.670 nm, b = 0.980 nm and c (chain axis) = 1.47 nm, together with a pseudo-hexagonal semi-hydrated form with unit cell parameters a = 1.670 nm, b = 0.965 nm and c (chain axis) = 1.44 nm. These parameters, together with the density data, indicate that inulin crystallizes along a pseudo-hexagonal six-fold symmetry with an advance per monomer of 0.24 nm. The difference between the hydrated and the semi-hydrated unit cells does not seem to correspond to any change in the conformation of inulin, but rather to a variation in water content.
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Affiliation(s)
- I André
- Centre de Recherches sur les Macromolécules Végétales (CNRS), Grenoble, France
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Abstract
Oligosaccharides represent a particularly challenging class of molecules for conformational analysis. Recent advances in experimental and theoretical methods have begun to yield further insight into their conformational behavior; however, general rules governing their conformational preferences have not yet emerged. X-ray and NMR techniques may provide vital insights into protein-bound oligosaccharide conformations, but these do not necessarily represent highly populated solution conformations. Moreover, an oligosaccharide's inherent flexibility and lack of strong intermolecular interactions places extreme demands on theoretical methods.
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Affiliation(s)
- R J Woods
- Complex Carbohydrate Research Center, University of Georgia, Athens 30602-4712, USA
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