Sulfated β-d-mannan from green seaweed Codium vermilara

β-(1 → 4)-d-Mannans constitute the major component of the cell wall of seaweeds of the genus Codium and replace cellulose as the major fibrillar component. They were found as major constituents of the hot water extracts of green seaweed Codium vermilara. By anion exchange chromatography of the first...

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Publicado:	2012
Materias:	β-Mannan Codium Green seaweed Sulfated polysaccharide Anion exchange chromatography Cell walls Central layers External layers Hot water extracts Interphase regions Molar ratio Sulfate groups Sulfated polysaccharides Carbohydrates Polymers Solvent extraction Water Seaweed Codium vermilara
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v87_n1_p916_Fernandez http://hdl.handle.net/20.500.12110/paper_01448617_v87_n1_p916_Fernandez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01448617_v87_n1_p916_Fernandez
record_format	dspace
spelling	paper:paper_01448617_v87_n1_p916_Fernandez2023-06-08T15:12:14Z Sulfated β-d-mannan from green seaweed Codium vermilara β-Mannan Codium Green seaweed Sulfated polysaccharide Anion exchange chromatography Cell walls Central layers Codium External layers Green seaweed Hot water extracts Interphase regions Molar ratio Sulfate groups Sulfated polysaccharides Carbohydrates Polymers Solvent extraction Water Seaweed Codium Codium vermilara β-(1 → 4)-d-Mannans constitute the major component of the cell wall of seaweeds of the genus Codium and replace cellulose as the major fibrillar component. They were found as major constituents of the hot water extracts of green seaweed Codium vermilara. By anion exchange chromatography of the first hot water extract, a pure sulfated mannan with a molar ratio carbohydrates:sulfate of 2.7:1 was isolated. The sulfate groups are linked to C-2 of 23% of the mannose units, while most of these units are not substituted. This degree of sulfation would explain the higher solubility of the polymer, compared to that of the non-sulfated fibrillar mannan. Taking into account that the fibrillar polysaccharides form two external layers in the cell wall, while the sulfated polymers are forming an amorphous central layer, it is postulated that these sulfated mannans could act as an interphase region between the neutral and acidic layers. © 2011 Elsevier Ltd. All Rights Reserved. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v87_n1_p916_Fernandez http://hdl.handle.net/20.500.12110/paper_01448617_v87_n1_p916_Fernandez
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-Mannan Codium Green seaweed Sulfated polysaccharide Anion exchange chromatography Cell walls Central layers Codium External layers Green seaweed Hot water extracts Interphase regions Molar ratio Sulfate groups Sulfated polysaccharides Carbohydrates Polymers Solvent extraction Water Seaweed Codium Codium vermilara
spellingShingle	β-Mannan Codium Green seaweed Sulfated polysaccharide Anion exchange chromatography Cell walls Central layers Codium External layers Green seaweed Hot water extracts Interphase regions Molar ratio Sulfate groups Sulfated polysaccharides Carbohydrates Polymers Solvent extraction Water Seaweed Codium Codium vermilara Sulfated β-d-mannan from green seaweed Codium vermilara
topic_facet	β-Mannan Codium Green seaweed Sulfated polysaccharide Anion exchange chromatography Cell walls Central layers Codium External layers Green seaweed Hot water extracts Interphase regions Molar ratio Sulfate groups Sulfated polysaccharides Carbohydrates Polymers Solvent extraction Water Seaweed Codium Codium vermilara
description	β-(1 → 4)-d-Mannans constitute the major component of the cell wall of seaweeds of the genus Codium and replace cellulose as the major fibrillar component. They were found as major constituents of the hot water extracts of green seaweed Codium vermilara. By anion exchange chromatography of the first hot water extract, a pure sulfated mannan with a molar ratio carbohydrates:sulfate of 2.7:1 was isolated. The sulfate groups are linked to C-2 of 23% of the mannose units, while most of these units are not substituted. This degree of sulfation would explain the higher solubility of the polymer, compared to that of the non-sulfated fibrillar mannan. Taking into account that the fibrillar polysaccharides form two external layers in the cell wall, while the sulfated polymers are forming an amorphous central layer, it is postulated that these sulfated mannans could act as an interphase region between the neutral and acidic layers. © 2011 Elsevier Ltd. All Rights Reserved.
title	Sulfated β-d-mannan from green seaweed Codium vermilara
title_short	Sulfated β-d-mannan from green seaweed Codium vermilara
title_full	Sulfated β-d-mannan from green seaweed Codium vermilara
title_fullStr	Sulfated β-d-mannan from green seaweed Codium vermilara
title_full_unstemmed	Sulfated β-d-mannan from green seaweed Codium vermilara
title_sort	sulfated β-d-mannan from green seaweed codium vermilara
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v87_n1_p916_Fernandez http://hdl.handle.net/20.500.12110/paper_01448617_v87_n1_p916_Fernandez
_version_	1768543839707987968

Sulfated β-d-mannan from green seaweed Codium vermilara

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