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Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis.
Carbohydr Polym. 2016 Jan 20; 136:1370-8.CP

Abstract

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.

Authors+Show Affiliations

Cátedra de Química de Biomoléculas, Departamento de Biología Aplicada y Alimentos, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires 1417, Argentina.Escuela de Bioanálisis, Facultad de Medicina, Universidad Central de Venezuela, Av. Carlos Raúl Villanueva, Ciudad Universitaria, Los Chaguaramos, Caracas 1051, Venezuela.Escuela de Química, Facultad de Ciencias, Universidad Central de Venezuela, Av. Paseo de los Ilustres, Ciudad Universitaria, Los Chaguaramos, Caracas 1450, Venezuela.Departamento de Química Orgánica - CIHIDECAR (CONICET-UBA), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires 1428, Argentina.Departamento de Química Orgánica - CIHIDECAR (CONICET-UBA), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires 1428, Argentina.Cátedra de Química de Biomoléculas, Departamento de Biología Aplicada y Alimentos, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires 1417, Argentina; Departamento de Química Orgánica - CIHIDECAR (CONICET-UBA), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires 1428, Argentina. Electronic address: ciancia@agro.uba.ar.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26572482

Citation

Perez Recalde, Mercedes, et al. "Carrageenan and Agaran Structures From the Red Seaweed Gymnogongrus Tenuis." Carbohydrate Polymers, vol. 136, 2016, pp. 1370-8.
Perez Recalde M, Canelón DJ, Compagnone RS, et al. Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis. Carbohydr Polym. 2016;136:1370-8.
Perez Recalde, M., Canelón, D. J., Compagnone, R. S., Matulewicz, M. C., Cerezo, A. S., & Ciancia, M. (2016). Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis. Carbohydrate Polymers, 136, 1370-8. https://doi.org/10.1016/j.carbpol.2015.10.007
Perez Recalde M, et al. Carrageenan and Agaran Structures From the Red Seaweed Gymnogongrus Tenuis. Carbohydr Polym. 2016 Jan 20;136:1370-8. PubMed PMID: 26572482.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Carrageenan and agaran structures from the red seaweed Gymnogongrus tenuis. AU - Perez Recalde,Mercedes, AU - Canelón,Dilsia J, AU - Compagnone,Reinaldo S, AU - Matulewicz,María C, AU - Cerezo,Alberto S, AU - Ciancia,Marina, Y1 - 2015/10/22/ PY - 2015/08/21/received PY - 2015/09/30/revised PY - 2015/10/03/accepted PY - 2015/11/18/entrez PY - 2015/11/18/pubmed PY - 2016/9/9/medline KW - Agaran KW - Carrageenan KW - Polysaccharide structure KW - Red seaweed KW - Sulfated galactan SP - 1370 EP - 8 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 136 N2 - 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. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/26572482/Carrageenan_and_agaran_structures_from_the_red_seaweed_Gymnogongrus_tenuis_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0144-8617(15)00987-X DB - PRIME DP - Unbound Medicine ER -