Sulfated polysaccharides from the red seaweed Georgiella confluens

The water-soluble polysaccharides from Georgiella confluens, collected in Antarctica, were fractionated with cetrimide. The complexed material was subjected to fractional solubilization in solutions of increasing sodium chloride concentration. The initially extracted polysaccharide and the major fra...

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Autores principales:	Kolender, A.A., Matulewicz, M.C.
Formato:	JOUR
Materias:	Agarans Galactans, sulfated Polysaccharides, red algal Polysaccharides, sulfated Structural analysis Gas chromatography Nuclear magnetic resonance spectroscopy Sodium chloride Solubility Solutions Xylose Sulfated polysaccharides Polysaccharides 2 o methyl levo galactose 3,6 anhydro 2 o methyl levo galactose 6 o methyl dextro galactose carbohydrate derivative carbon 13 cetrimide galactose monosaccharide polysaccharide sulfate sodium chloride sulfur derivative unclassified drug water xylose amination Antarctica article carbohydrate analysis chemical reaction concentration response conformation controlled study degradation diastereoisomer ethylation fractionation gas chromatography methylation nonhuman nuclear magnetic resonance spectroscopy priority journal seaweed solubility structure analysis sulfation and desulfurization Algae, Red Carbohydrate Conformation Chromatography, Gas Chromatography, Ion Exchange Galactans Galactose Magnetic Resonance Spectroscopy Sulfates algae Confluens
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00086215_v337_n1_p57_Kolender
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00086215_v337_n1_p57_Kolender
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spelling	todo:paper_00086215_v337_n1_p57_Kolender2023-10-03T14:06:59Z Sulfated polysaccharides from the red seaweed Georgiella confluens Kolender, A.A. Matulewicz, M.C. Agarans Galactans, sulfated Polysaccharides, red algal Polysaccharides, sulfated Structural analysis Gas chromatography Nuclear magnetic resonance spectroscopy Sodium chloride Solubility Solutions Structural analysis Xylose Sulfated polysaccharides Polysaccharides 2 o methyl levo galactose 3,6 anhydro 2 o methyl levo galactose 6 o methyl dextro galactose carbohydrate derivative carbon 13 cetrimide galactose monosaccharide polysaccharide sulfate sodium chloride sulfur derivative unclassified drug water xylose amination Antarctica article carbohydrate analysis chemical reaction concentration response conformation controlled study degradation diastereoisomer ethylation fractionation gas chromatography methylation nonhuman nuclear magnetic resonance spectroscopy priority journal seaweed solubility structure analysis sulfation and desulfurization Algae, Red Carbohydrate Conformation Chromatography, Gas Chromatography, Ion Exchange Galactans Galactose Magnetic Resonance Spectroscopy Polysaccharides Sulfates Xylose algae Confluens The water-soluble polysaccharides from Georgiella confluens, collected in Antarctica, were fractionated with cetrimide. The complexed material was subjected to fractional solubilization in solutions of increasing sodium chloride concentration. The initially extracted polysaccharide and the major fraction isolated, soluble in 0.5 M NaCl, were studied. These are sulfated xylogalactans naturally rich in methylated sugar residues, comprising of 3,6-anhydro-2-O-methyl-L-galactose, 2-O-methyl-L-galactose and 6-O-methyl-D-galactose. Structural analysis was carried out by methylation, ethylation, desulfation-ethylation, desulfation-methylation, Smith degradation, 13C NMR spectroscopy and determination of the absolute configuration of monosaccharides by gas chromatography of diastereomeric derivatives produced by reductive amination. The results indicated the presence of an agaran backbone with an unusual substitution pattern: sulfation mainly at the 3-position of the α-L-galactose units and the presence of xylose side chains at the 4-position of the β-D-galactose residues. © 2002 Elsevier Science Ltd. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00086215_v337_n1_p57_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	Agarans Galactans, sulfated Polysaccharides, red algal Polysaccharides, sulfated Structural analysis Gas chromatography Nuclear magnetic resonance spectroscopy Sodium chloride Solubility Solutions Structural analysis Xylose Sulfated polysaccharides Polysaccharides 2 o methyl levo galactose 3,6 anhydro 2 o methyl levo galactose 6 o methyl dextro galactose carbohydrate derivative carbon 13 cetrimide galactose monosaccharide polysaccharide sulfate sodium chloride sulfur derivative unclassified drug water xylose amination Antarctica article carbohydrate analysis chemical reaction concentration response conformation controlled study degradation diastereoisomer ethylation fractionation gas chromatography methylation nonhuman nuclear magnetic resonance spectroscopy priority journal seaweed solubility structure analysis sulfation and desulfurization Algae, Red Carbohydrate Conformation Chromatography, Gas Chromatography, Ion Exchange Galactans Galactose Magnetic Resonance Spectroscopy Polysaccharides Sulfates Xylose algae Confluens
spellingShingle	Agarans Galactans, sulfated Polysaccharides, red algal Polysaccharides, sulfated Structural analysis Gas chromatography Nuclear magnetic resonance spectroscopy Sodium chloride Solubility Solutions Structural analysis Xylose Sulfated polysaccharides Polysaccharides 2 o methyl levo galactose 3,6 anhydro 2 o methyl levo galactose 6 o methyl dextro galactose carbohydrate derivative carbon 13 cetrimide galactose monosaccharide polysaccharide sulfate sodium chloride sulfur derivative unclassified drug water xylose amination Antarctica article carbohydrate analysis chemical reaction concentration response conformation controlled study degradation diastereoisomer ethylation fractionation gas chromatography methylation nonhuman nuclear magnetic resonance spectroscopy priority journal seaweed solubility structure analysis sulfation and desulfurization Algae, Red Carbohydrate Conformation Chromatography, Gas Chromatography, Ion Exchange Galactans Galactose Magnetic Resonance Spectroscopy Polysaccharides Sulfates Xylose algae Confluens Kolender, A.A. Matulewicz, M.C. Sulfated polysaccharides from the red seaweed Georgiella confluens
topic_facet	Agarans Galactans, sulfated Polysaccharides, red algal Polysaccharides, sulfated Structural analysis Gas chromatography Nuclear magnetic resonance spectroscopy Sodium chloride Solubility Solutions Structural analysis Xylose Sulfated polysaccharides Polysaccharides 2 o methyl levo galactose 3,6 anhydro 2 o methyl levo galactose 6 o methyl dextro galactose carbohydrate derivative carbon 13 cetrimide galactose monosaccharide polysaccharide sulfate sodium chloride sulfur derivative unclassified drug water xylose amination Antarctica article carbohydrate analysis chemical reaction concentration response conformation controlled study degradation diastereoisomer ethylation fractionation gas chromatography methylation nonhuman nuclear magnetic resonance spectroscopy priority journal seaweed solubility structure analysis sulfation and desulfurization Algae, Red Carbohydrate Conformation Chromatography, Gas Chromatography, Ion Exchange Galactans Galactose Magnetic Resonance Spectroscopy Polysaccharides Sulfates Xylose algae Confluens
description	The water-soluble polysaccharides from Georgiella confluens, collected in Antarctica, were fractionated with cetrimide. The complexed material was subjected to fractional solubilization in solutions of increasing sodium chloride concentration. The initially extracted polysaccharide and the major fraction isolated, soluble in 0.5 M NaCl, were studied. These are sulfated xylogalactans naturally rich in methylated sugar residues, comprising of 3,6-anhydro-2-O-methyl-L-galactose, 2-O-methyl-L-galactose and 6-O-methyl-D-galactose. Structural analysis was carried out by methylation, ethylation, desulfation-ethylation, desulfation-methylation, Smith degradation, 13C NMR spectroscopy and determination of the absolute configuration of monosaccharides by gas chromatography of diastereomeric derivatives produced by reductive amination. The results indicated the presence of an agaran backbone with an unusual substitution pattern: sulfation mainly at the 3-position of the α-L-galactose units and the presence of xylose side chains at the 4-position of the β-D-galactose residues. © 2002 Elsevier Science Ltd. All rights reserved.
format	JOUR
author	Kolender, A.A. Matulewicz, M.C.
author_facet	Kolender, A.A. Matulewicz, M.C.
author_sort	Kolender, A.A.
title	Sulfated polysaccharides from the red seaweed Georgiella confluens
title_short	Sulfated polysaccharides from the red seaweed Georgiella confluens
title_full	Sulfated polysaccharides from the red seaweed Georgiella confluens
title_fullStr	Sulfated polysaccharides from the red seaweed Georgiella confluens
title_full_unstemmed	Sulfated polysaccharides from the red seaweed Georgiella confluens
title_sort	sulfated polysaccharides from the red seaweed georgiella confluens
url	http://hdl.handle.net/20.500.12110/paper_00086215_v337_n1_p57_Kolender
work_keys_str_mv	AT kolenderaa sulfatedpolysaccharidesfromtheredseaweedgeorgiellaconfluens AT matulewiczmc sulfatedpolysaccharidesfromtheredseaweedgeorgiellaconfluens
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Sulfated polysaccharides from the red seaweed Georgiella confluens

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