Cold water-soluble polysaccharides from tetrasporic Pterocladia capillacea

Cold water extraction of tetrasporic Pterocladia capillacea led to the isolation of a product which was characterized and further treated with Cetrimide. The complexed material was subjected to fractional solubilization in solutions of increasing sodium chloride concentration and six fractions were...

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Autores principales: Errea, M.I., Matulewicz, M.C.
Formato: JOUR
Materias:
13C NMR.
agaroids
methylation analysis
polysaccharides
Pterocladia capillacea
Rhodophyta
polysaccharide
water
article
carbohydrate analysis
chemistry
cold
isolation and purification
methylation
molecular genetics
seaweed
solubility
Carbohydrate Sequence
Cold
Methylation
Molecular Sequence Data
Polysaccharides
Seaweed
Solubility
Water
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319422_v37_n4_p1075_Errea
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00319422_v37_n4_p1075_Errea
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spelling todo:paper_00319422_v37_n4_p1075_Errea2023-10-03T14:44:18Z Cold water-soluble polysaccharides from tetrasporic Pterocladia capillacea Errea, M.I. Matulewicz, M.C. 13C NMR. agaroids methylation analysis polysaccharides Pterocladia capillacea Rhodophyta polysaccharide water article carbohydrate analysis chemistry cold isolation and purification methylation molecular genetics seaweed solubility Carbohydrate Sequence Cold Methylation Molecular Sequence Data Polysaccharides Seaweed Solubility Water Cold water extraction of tetrasporic Pterocladia capillacea led to the isolation of a product which was characterized and further treated with Cetrimide. The complexed material was subjected to fractional solubilization in solutions of increasing sodium chloride concentration and six fractions were separated. The two major products obtained, one soluble in Cetrimide solution, the other soluble in 0.5 M sodium chloride, were subjected to structural studies, carried out by methylation analysis and 13C NMR spectroscopy. The results obtained indicated for the former a backbone mainly constituted by alternating 3-linked β-d-galactose units and 4-linked 3,6-anhydro-α-l-galactose residues, but with other structural features probably responsible for its non-gelling properties. The acidic fraction is a complex polysaccharide sulphated mainly on C-6 of the β-d-galactose units and on C-3 of the α-l-galactose residues. © 1994. Fil:Errea, M.I. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319422_v37_n4_p1075_Errea
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 13C NMR.
agaroids
methylation analysis
polysaccharides
Pterocladia capillacea
Rhodophyta
polysaccharide
water
article
carbohydrate analysis
chemistry
cold
isolation and purification
methylation
molecular genetics
seaweed
solubility
Carbohydrate Sequence
Cold
Methylation
Molecular Sequence Data
Polysaccharides
Seaweed
Solubility
Water
spellingShingle 13C NMR.
agaroids
methylation analysis
polysaccharides
Pterocladia capillacea
Rhodophyta
polysaccharide
water
article
carbohydrate analysis
chemistry
cold
isolation and purification
methylation
molecular genetics
seaweed
solubility
Carbohydrate Sequence
Cold
Methylation
Molecular Sequence Data
Polysaccharides
Seaweed
Solubility
Water
Errea, M.I.
Matulewicz, M.C.
Cold water-soluble polysaccharides from tetrasporic Pterocladia capillacea
topic_facet 13C NMR.
agaroids
methylation analysis
polysaccharides
Pterocladia capillacea
Rhodophyta
polysaccharide
water
article
carbohydrate analysis
chemistry
cold
isolation and purification
methylation
molecular genetics
seaweed
solubility
Carbohydrate Sequence
Cold
Methylation
Molecular Sequence Data
Polysaccharides
Seaweed
Solubility
Water
description Cold water extraction of tetrasporic Pterocladia capillacea led to the isolation of a product which was characterized and further treated with Cetrimide. The complexed material was subjected to fractional solubilization in solutions of increasing sodium chloride concentration and six fractions were separated. The two major products obtained, one soluble in Cetrimide solution, the other soluble in 0.5 M sodium chloride, were subjected to structural studies, carried out by methylation analysis and 13C NMR spectroscopy. The results obtained indicated for the former a backbone mainly constituted by alternating 3-linked β-d-galactose units and 4-linked 3,6-anhydro-α-l-galactose residues, but with other structural features probably responsible for its non-gelling properties. The acidic fraction is a complex polysaccharide sulphated mainly on C-6 of the β-d-galactose units and on C-3 of the α-l-galactose residues. © 1994.
format JOUR
author Errea, M.I.
Matulewicz, M.C.
author_facet Errea, M.I.
Matulewicz, M.C.
author_sort Errea, M.I.
title Cold water-soluble polysaccharides from tetrasporic Pterocladia capillacea
title_short Cold water-soluble polysaccharides from tetrasporic Pterocladia capillacea
title_full Cold water-soluble polysaccharides from tetrasporic Pterocladia capillacea
title_fullStr Cold water-soluble polysaccharides from tetrasporic Pterocladia capillacea
title_full_unstemmed Cold water-soluble polysaccharides from tetrasporic Pterocladia capillacea
title_sort cold water-soluble polysaccharides from tetrasporic pterocladia capillacea
url http://hdl.handle.net/20.500.12110/paper_00319422_v37_n4_p1075_Errea
work_keys_str_mv AT erreami coldwatersolublepolysaccharidesfromtetrasporicpterocladiacapillacea
AT matulewiczmc coldwatersolublepolysaccharidesfromtetrasporicpterocladiacapillacea
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