Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bay

Detalhes bibliográficos
Autor(a) principal: Pereira, Leonel
Data de Publicação: 2003
Outros Autores: Mesquita, José F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/3922
https://doi.org/10.1016/S1389-0344(03)00056-X
Resumo: Infrared and Raman spectroscopic analysis of the carrageenan (alkaline extraction) in eight species (representing seven genera and four families) of Gigartinales, in different reproductive phases from Buarcos bay (Figueira da Foz, Portugal), were studied. Female gametophytes and non-fertile thalli samples of Chondrus crispus, Mastocarpus stellatus, Chondracanthus teedei var. lusitanicus, Gigartina pistillata and Chondracanthus acicularis present a [kappa]-carrageenan profile or varying degrees of a [kappa]-[iota] hybrid. The presence of [kappa]-[iota] hybrid carrageenan in C. teedei var. lusitanicus was confirmed by 13C NMR. The carrageenans extracted from Gymnogongrus crenulatus and Ahnfeltiopsis devoniensis are constituted mainly by [iota]-carrageenan but seasonal variations in the nature of carrageenans are present. [lambda]-Family carrageenans were found in tetrasporophytes of C. crispus, M. stellatus, C. teedei var. lusitanicus, C. acicularis and G. pistillata. Calliblepharis jubata presents carrageenans of [iota]-type in all reproductive stages.
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spelling Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bayPortugalCarrageenophytesCarrageenanFT-Raman13C NMRInfrared and Raman spectroscopic analysis of the carrageenan (alkaline extraction) in eight species (representing seven genera and four families) of Gigartinales, in different reproductive phases from Buarcos bay (Figueira da Foz, Portugal), were studied. Female gametophytes and non-fertile thalli samples of Chondrus crispus, Mastocarpus stellatus, Chondracanthus teedei var. lusitanicus, Gigartina pistillata and Chondracanthus acicularis present a [kappa]-carrageenan profile or varying degrees of a [kappa]-[iota] hybrid. The presence of [kappa]-[iota] hybrid carrageenan in C. teedei var. lusitanicus was confirmed by 13C NMR. The carrageenans extracted from Gymnogongrus crenulatus and Ahnfeltiopsis devoniensis are constituted mainly by [iota]-carrageenan but seasonal variations in the nature of carrageenans are present. [lambda]-Family carrageenans were found in tetrasporophytes of C. crispus, M. stellatus, C. teedei var. lusitanicus, C. acicularis and G. pistillata. Calliblepharis jubata presents carrageenans of [iota]-type in all reproductive stages.http://www.sciencedirect.com/science/article/B6VRM-48TMNJX-1/1/5c3e789e9ce06b27cda8bbf9eebcaea22003info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/3922http://hdl.handle.net/10316/3922https://doi.org/10.1016/S1389-0344(03)00056-XengBiomolecular Engineering. 20:4-6 (2003) 217-222Pereira, LeonelMesquita, José F.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-11-06T16:59:58Zoai:estudogeral.uc.pt:10316/3922Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:55:51.495249Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bay
title Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bay
spellingShingle Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bay
Pereira, Leonel
Portugal
Carrageenophytes
Carrageenan
FT-Raman
13C NMR
title_short Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bay
title_full Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bay
title_fullStr Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bay
title_full_unstemmed Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bay
title_sort Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in eight carrageenophytes from Buarcos bay
author Pereira, Leonel
author_facet Pereira, Leonel
Mesquita, José F.
author_role author
author2 Mesquita, José F.
author2_role author
dc.contributor.author.fl_str_mv Pereira, Leonel
Mesquita, José F.
dc.subject.por.fl_str_mv Portugal
Carrageenophytes
Carrageenan
FT-Raman
13C NMR
topic Portugal
Carrageenophytes
Carrageenan
FT-Raman
13C NMR
description Infrared and Raman spectroscopic analysis of the carrageenan (alkaline extraction) in eight species (representing seven genera and four families) of Gigartinales, in different reproductive phases from Buarcos bay (Figueira da Foz, Portugal), were studied. Female gametophytes and non-fertile thalli samples of Chondrus crispus, Mastocarpus stellatus, Chondracanthus teedei var. lusitanicus, Gigartina pistillata and Chondracanthus acicularis present a [kappa]-carrageenan profile or varying degrees of a [kappa]-[iota] hybrid. The presence of [kappa]-[iota] hybrid carrageenan in C. teedei var. lusitanicus was confirmed by 13C NMR. The carrageenans extracted from Gymnogongrus crenulatus and Ahnfeltiopsis devoniensis are constituted mainly by [iota]-carrageenan but seasonal variations in the nature of carrageenans are present. [lambda]-Family carrageenans were found in tetrasporophytes of C. crispus, M. stellatus, C. teedei var. lusitanicus, C. acicularis and G. pistillata. Calliblepharis jubata presents carrageenans of [iota]-type in all reproductive stages.
publishDate 2003
dc.date.none.fl_str_mv 2003
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/3922
http://hdl.handle.net/10316/3922
https://doi.org/10.1016/S1389-0344(03)00056-X
url http://hdl.handle.net/10316/3922
https://doi.org/10.1016/S1389-0344(03)00056-X
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Biomolecular Engineering. 20:4-6 (2003) 217-222
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv aplication/PDF
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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