Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis
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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todo:paper_01448617_v136_n_p1370_PerezRecalde2023-10-03T14:59:35Z Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis Perez Recalde, M. Canelón, D.J. Compagnone, R.S. Matulewicz, M.C. Cerezo, A.S. Ciancia, M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Perez Recalde, M. Canelón, D.J. Compagnone, R.S. Matulewicz, M.C. Cerezo, A.S. Ciancia, M. 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. |
| format |
JOUR |
| author |
Perez Recalde, M. Canelón, D.J. Compagnone, R.S. Matulewicz, M.C. Cerezo, A.S. Ciancia, M. |
| author_facet |
Perez Recalde, M. Canelón, D.J. Compagnone, R.S. Matulewicz, M.C. Cerezo, A.S. Ciancia, M. |
| author_sort |
Perez Recalde, M. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_01448617_v136_n_p1370_PerezRecalde |
| work_keys_str_mv |
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