Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis

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The galactan system biosynthesized by the red seaweed Gymnogongrus tenuis (Phyllophoraceae) is constituted by major amounts of κ/ι-carrageenans, with predominance of ι-structures, which were isolated by extraction with hot water in high yield (∼45%). A small amount of non-cyclized carrageenans mostl...

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Autores principales:	Pérez Recalde, María Mercedes, Matulewicz, María Cristina, Cerezo, Alberto Saúl, Ciancia, Marina
Publicado:	2016
Materias:	Agaran Carrageenan Polysaccharide structure Red seaweed Sulfated galactan Polysaccharides Seaweed Water Xylose Carrageenans Red seaweeds Sulfated galactans Extraction carrageenan galactan water chemistry heat isolation and purification red alga seaweed Galactans Hot Temperature Rhodophyta
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v136_n_p1370_PerezRecalde http://hdl.handle.net/20.500.12110/paper_01448617_v136_n_p1370_PerezRecalde
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01448617_v136_n_p1370_PerezRecalde
record_format	dspace
spelling	paper:paper_01448617_v136_n_p1370_PerezRecalde2023-06-08T15:12:01Z Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis Pérez Recalde, María Mercedes Matulewicz, María Cristina Cerezo, Alberto Saúl Ciancia, Marina Agaran Carrageenan Polysaccharide structure Red seaweed Sulfated galactan Polysaccharides Seaweed Water Xylose Agaran Carrageenans Polysaccharide structure Red seaweeds Sulfated galactans Extraction carrageenan galactan water chemistry heat isolation and purification red alga seaweed Carrageenan Galactans Hot Temperature Rhodophyta Seaweed Water The galactan system biosynthesized by the red seaweed Gymnogongrus tenuis (Phyllophoraceae) is constituted by major amounts of κ/ι-carrageenans, with predominance of ι-structures, which were isolated by extraction with hot water in high yield (∼45%). A small amount of non-cyclized carrageenans mostly of the ν-type was also obtained. Besides, 12% of these galactans are agaran structures, which were present in major quantities in the room temperature water extracts, but they were also found in the hot water extract. They are constituted by 3-linked β-d-galactose units partially substituted on C-6 with sulfate or single stubs of β-d-xylose and 4-linked residues that comprise α-l-galactose units partially sulfated or methoxylated on C-3 or sulfated on C-3 and C-6 and 3,6-anhydro-α-l-galactose. Related structural patterns were previously found for agarans synthesized by other carrageenophytes. Results presented here show that these agarans are low molecular weight molecules independent of the carrageenan structures, with strong interactions between them. © 2015 Published by Elsevier Ltd. Fil:Perez Recalde, M. 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. Fil:Cerezo, A.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ciancia, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v136_n_p1370_PerezRecalde http://hdl.handle.net/20.500.12110/paper_01448617_v136_n_p1370_PerezRecalde
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Agaran Carrageenan Polysaccharide structure Red seaweed Sulfated galactan Polysaccharides Seaweed Water Xylose Agaran Carrageenans Polysaccharide structure Red seaweeds Sulfated galactans Extraction carrageenan galactan water chemistry heat isolation and purification red alga seaweed Carrageenan Galactans Hot Temperature Rhodophyta Seaweed Water
spellingShingle	Agaran Carrageenan Polysaccharide structure Red seaweed Sulfated galactan Polysaccharides Seaweed Water Xylose Agaran Carrageenans Polysaccharide structure Red seaweeds Sulfated galactans Extraction carrageenan galactan water chemistry heat isolation and purification red alga seaweed Carrageenan Galactans Hot Temperature Rhodophyta Seaweed Water Pérez Recalde, María Mercedes Matulewicz, María Cristina Cerezo, Alberto Saúl Ciancia, Marina Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis
topic_facet	Agaran Carrageenan Polysaccharide structure Red seaweed Sulfated galactan Polysaccharides Seaweed Water Xylose Agaran Carrageenans Polysaccharide structure Red seaweeds Sulfated galactans Extraction carrageenan galactan water chemistry heat isolation and purification red alga seaweed Carrageenan Galactans Hot Temperature Rhodophyta Seaweed Water
description	The galactan system biosynthesized by the red seaweed Gymnogongrus tenuis (Phyllophoraceae) is constituted by major amounts of κ/ι-carrageenans, with predominance of ι-structures, which were isolated by extraction with hot water in high yield (∼45%). A small amount of non-cyclized carrageenans mostly of the ν-type was also obtained. Besides, 12% of these galactans are agaran structures, which were present in major quantities in the room temperature water extracts, but they were also found in the hot water extract. They are constituted by 3-linked β-d-galactose units partially substituted on C-6 with sulfate or single stubs of β-d-xylose and 4-linked residues that comprise α-l-galactose units partially sulfated or methoxylated on C-3 or sulfated on C-3 and C-6 and 3,6-anhydro-α-l-galactose. Related structural patterns were previously found for agarans synthesized by other carrageenophytes. Results presented here show that these agarans are low molecular weight molecules independent of the carrageenan structures, with strong interactions between them. © 2015 Published by Elsevier Ltd.
author	Pérez Recalde, María Mercedes Matulewicz, María Cristina Cerezo, Alberto Saúl Ciancia, Marina
author_facet	Pérez Recalde, María Mercedes Matulewicz, María Cristina Cerezo, Alberto Saúl Ciancia, Marina
author_sort	Pérez Recalde, María Mercedes
title	Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis
title_short	Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis
title_full	Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis
title_fullStr	Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis
title_full_unstemmed	Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis
title_sort	carrageenan and agaran structures from the red seaweed gymnogongrus tenuis
publishDate	2016
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v136_n_p1370_PerezRecalde http://hdl.handle.net/20.500.12110/paper_01448617_v136_n_p1370_PerezRecalde
work_keys_str_mv	AT perezrecaldemariamercedes carrageenanandagaranstructuresfromtheredseaweedgymnogongrustenuis AT matulewiczmariacristina carrageenanandagaranstructuresfromtheredseaweedgymnogongrustenuis AT cerezoalbertosaul carrageenanandagaranstructuresfromtheredseaweedgymnogongrustenuis AT cianciamarina carrageenanandagaranstructuresfromtheredseaweedgymnogongrustenuis
_version_	1768544472818253824

Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis

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