Desulfation of sulfated galactans with chlorotrimethylsilane. Characterization of β-carrageenan by 1H NMR spectroscopy

A desulfation method using chlorotrimethylsilane for treatment of pyridinium salts of sulfated galactans was developed. It proved to be appropriate for desulfation of polysaccharides of both agar and carrageenan families. In order to evaluate its efficiency in presence of the maximum content of 3,6-...

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Autores principales:	Kolender, Adriana Andrea, Matulewicz, María Cristina
Publicado:	2004
Materias:	β-Carrageenan κ-Carrageenan Agarans Desulfation method Sulfated galactans High recovery Degradation Nuclear magnetic resonance spectroscopy Organic compounds Polysaccharides Reaction kinetics Sulfur agar carrageenan chlorotrimethylsilane galactan galactose polysaccharide pyridinium derivative sulfate article carbon nuclear magnetic resonance degradation nonhuman priority journal proton nuclear magnetic resonance sulfation Carrageenan Galactans Molecular Weight Nuclear Magnetic Resonance, Biomolecular Sulfuric Acid Esters Temperature Time Factors Trimethylsilyl Compounds
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00086215_v339_n9_p1619_Kolender http://hdl.handle.net/20.500.12110/paper_00086215_v339_n9_p1619_Kolender
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00086215_v339_n9_p1619_Kolender
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spelling	paper:paper_00086215_v339_n9_p1619_Kolender2023-06-08T14:32:47Z Desulfation of sulfated galactans with chlorotrimethylsilane. Characterization of β-carrageenan by 1H NMR spectroscopy Kolender, Adriana Andrea Matulewicz, María Cristina β-Carrageenan κ-Carrageenan Agarans Desulfation method Sulfated galactans Desulfation method High recovery Degradation Nuclear magnetic resonance spectroscopy Organic compounds Polysaccharides Reaction kinetics Sulfur agar carrageenan chlorotrimethylsilane galactan galactose polysaccharide pyridinium derivative sulfate article carbon nuclear magnetic resonance degradation nonhuman priority journal proton nuclear magnetic resonance sulfation Carrageenan Galactans Molecular Weight Nuclear Magnetic Resonance, Biomolecular Sulfuric Acid Esters Temperature Time Factors Trimethylsilyl Compounds A desulfation method using chlorotrimethylsilane for treatment of pyridinium salts of sulfated galactans was developed. It proved to be appropriate for desulfation of polysaccharides of both agar and carrageenan families. In order to evaluate its efficiency in presence of the maximum content of 3,6-anhydrogalactose, it was applied to commercial κ-carrageenan, leading to obtention of a product mainly composed by β-carrageenan. Best experimental conditions for achieving desulfation of κ-carrageenan - in terms of low sulfate content, high recovery and low degradation of the product - were found. In addition, the complete assignment of the 1H NMR spectrum of β-carrageenan was achieved by means of 1D and 2D NMR techniques. © 2004 Elsevier Ltd. All rights reserved. Fil:Kolender, A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Matulewicz, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00086215_v339_n9_p1619_Kolender http://hdl.handle.net/20.500.12110/paper_00086215_v339_n9_p1619_Kolender
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	β-Carrageenan κ-Carrageenan Agarans Desulfation method Sulfated galactans Desulfation method High recovery Degradation Nuclear magnetic resonance spectroscopy Organic compounds Polysaccharides Reaction kinetics Sulfur agar carrageenan chlorotrimethylsilane galactan galactose polysaccharide pyridinium derivative sulfate article carbon nuclear magnetic resonance degradation nonhuman priority journal proton nuclear magnetic resonance sulfation Carrageenan Galactans Molecular Weight Nuclear Magnetic Resonance, Biomolecular Sulfuric Acid Esters Temperature Time Factors Trimethylsilyl Compounds
spellingShingle	β-Carrageenan κ-Carrageenan Agarans Desulfation method Sulfated galactans Desulfation method High recovery Degradation Nuclear magnetic resonance spectroscopy Organic compounds Polysaccharides Reaction kinetics Sulfur agar carrageenan chlorotrimethylsilane galactan galactose polysaccharide pyridinium derivative sulfate article carbon nuclear magnetic resonance degradation nonhuman priority journal proton nuclear magnetic resonance sulfation Carrageenan Galactans Molecular Weight Nuclear Magnetic Resonance, Biomolecular Sulfuric Acid Esters Temperature Time Factors Trimethylsilyl Compounds Kolender, Adriana Andrea Matulewicz, María Cristina Desulfation of sulfated galactans with chlorotrimethylsilane. Characterization of β-carrageenan by 1H NMR spectroscopy
topic_facet	β-Carrageenan κ-Carrageenan Agarans Desulfation method Sulfated galactans Desulfation method High recovery Degradation Nuclear magnetic resonance spectroscopy Organic compounds Polysaccharides Reaction kinetics Sulfur agar carrageenan chlorotrimethylsilane galactan galactose polysaccharide pyridinium derivative sulfate article carbon nuclear magnetic resonance degradation nonhuman priority journal proton nuclear magnetic resonance sulfation Carrageenan Galactans Molecular Weight Nuclear Magnetic Resonance, Biomolecular Sulfuric Acid Esters Temperature Time Factors Trimethylsilyl Compounds
description	A desulfation method using chlorotrimethylsilane for treatment of pyridinium salts of sulfated galactans was developed. It proved to be appropriate for desulfation of polysaccharides of both agar and carrageenan families. In order to evaluate its efficiency in presence of the maximum content of 3,6-anhydrogalactose, it was applied to commercial κ-carrageenan, leading to obtention of a product mainly composed by β-carrageenan. Best experimental conditions for achieving desulfation of κ-carrageenan - in terms of low sulfate content, high recovery and low degradation of the product - were found. In addition, the complete assignment of the 1H NMR spectrum of β-carrageenan was achieved by means of 1D and 2D NMR techniques. © 2004 Elsevier Ltd. All rights reserved.
author	Kolender, Adriana Andrea Matulewicz, María Cristina
author_facet	Kolender, Adriana Andrea Matulewicz, María Cristina
author_sort	Kolender, Adriana Andrea
title	Desulfation of sulfated galactans with chlorotrimethylsilane. Characterization of β-carrageenan by 1H NMR spectroscopy
title_short	Desulfation of sulfated galactans with chlorotrimethylsilane. Characterization of β-carrageenan by 1H NMR spectroscopy
title_full	Desulfation of sulfated galactans with chlorotrimethylsilane. Characterization of β-carrageenan by 1H NMR spectroscopy
title_fullStr	Desulfation of sulfated galactans with chlorotrimethylsilane. Characterization of β-carrageenan by 1H NMR spectroscopy
title_full_unstemmed	Desulfation of sulfated galactans with chlorotrimethylsilane. Characterization of β-carrageenan by 1H NMR spectroscopy
title_sort	desulfation of sulfated galactans with chlorotrimethylsilane. characterization of β-carrageenan by 1h nmr spectroscopy
publishDate	2004
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00086215_v339_n9_p1619_Kolender http://hdl.handle.net/20.500.12110/paper_00086215_v339_n9_p1619_Kolender
work_keys_str_mv	AT kolenderadrianaandrea desulfationofsulfatedgalactanswithchlorotrimethylsilanecharacterizationofbcarrageenanby1hnmrspectroscopy AT matulewiczmariacristina desulfationofsulfatedgalactanswithchlorotrimethylsilanecharacterizationofbcarrageenanby1hnmrspectroscopy
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Desulfation of sulfated galactans with chlorotrimethylsilane. Characterization of β-carrageenan by 1H NMR spectroscopy

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