BLOCK STRUCTURE IN ALGINIC ACID FROM LESSONIA VADOSA (LAMINARIALES, PHAEOPHYTA)

Matsuhiro, B.; Torres, SE; Guerrero, J

Abstract

"Alkaline extraction of Lessonia vadosa blades collected in Fuerte Bulnes (southern Chile) afforded sodium alginate in 14.5% yield. Partial acid hydrolysis of the sodium alginate gave three fractions which were characterised by one- and two-dimensional nuclear magnetic resonance techniques. Fraction 1 (17.8 % yield) showed to be mainly composed of alternate heteropolymeric block (MG) and in minor proportions of polymannuronic sequences. Analysis of 13C NMR and 2D HSQC spectra indicated that Fraction 2 (64.5% yield) is a polymannuronic enriched fraction. The minor amount of guluronic acid residues in this fraction showed by 2D

Más información

Título según WOS: Block structure in alginic acid from Lessonia vadosa (laminariales, phaeophyta)
Título según SCOPUS: Block structure in alginic acid from Lessonia vadosa (Laminariales, Phaeophyta)
Título según SCIELO: BLOCK STRUCTURE IN ALGINIC ACID FROM LESSONIA VADOSA (LAMINARIALES, PHAEOPHYTA)
Título de la Revista: JOURNAL OF THE CHILEAN CHEMICAL SOCIETY
Volumen: 52
Número: 1
Editorial: 2013
Fecha de publicación: 2007
Página de inicio: 1095
Página final: 1098
Idioma: English
DOI:

10.4067/S0717-97072007000100009

Notas: ISI, SCIELO, SCOPUS