Data/hora: 12/06/2024 07:40:21

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 25/09/2017
Data da última atualização: | 12/12/2017
Autoria: | BARBIERI, S. F.; RUTHES, A. C.; PETKOWICZ, C. L. de O.; GODOY, R. C. B. de; SASSAKI, G. L.; SANTANA FILHO, A. P.; SILVEIRA, J. L. M.
Afiliação: | Shayla Fernanda Barbieri, UFPR; Andrea Caroline Ruthes, Brazil Division of Glycoscience, Royal Institute of Technology; Carmen Lúcia de Oliveira Petkowicz, UFPR; ROSSANA CATIE BUENO DE GODOY, CNPF; Guilherme Lanzi Sassaki, UFPR; Arquimedes Paixão Santana Filho, UFPR; Joana Léa Meira Silveira, UFPR.
Título: | Extraction, purification and structural characterization of agalactoglucomannan from the gabiroba fruit (Campomanesia xanthocarpa Berg), Myrtaceae family.
Ano de publicação: | 2017
Fonte/Imprenta: | Carbohydrate Polymers, v. 174, p. 887-895, Oct. 2017.
DOI: | http://dx.doi.org/10.1016/j.carbpol.2017.07.015
Idioma: | Inglês
Conteúdo: | In this study, we isolated and structurally characterized, for the first time, a galactoglucomannan (GGM) from the pulp of gabiroba, a Myrtaceae family species. The HPSEC-MALLS-RI analysis showed a homoge-neous polysaccharide with molar mass of 25,340 g mol&#8722;1. The monosaccharide composition showed thatthe GGM consisted of Man:Glc:Gal in a molar ratio of 1:1:0.6. Methylation and 1D and 2D NMR analysessuggested that the main chain of the GGM consisted of -d-Glcp and -d-Manp units (1 &#8594; 4)-linked. The-d-Galp substitutions occur mainly at O-6 position of -d-Manp units. The glycosidic linkages of theGGM were evident by the presence of the characteristic signals of 4-O-substituted residues at 78.6/3.69for both -d-Glcp and -d-Manp. Furthermore, the O-6 substitutions for both -d-Glcp and -d-Manpunits were confirmed by signals at 67.1/4.00 and 3.93. The interglycosidic correlations, obtained throughthe analysis of the HMBC spectrum, further confirm the structure.
Palavras-Chave: | Extraction polysaccharide; Gabiroba; Galactoglucomannan; Hemicelullose; NMR analysis.
Thesagro: | Espécie nativa; Guabiroba; Hemicelulose; Polpa de fruta; Sacarídeo.
Thesaurus Nal: | Campomanesia xanthocarpa; Fruit pulp; Mannans.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (55968-1) - UPC - AP - DD -  -  -  - DIS