The system of low-molecular-weight carrageenans and agaroids from the room-temperature-extracted fraction of Kappaphyeus alvarezii

José M. Estevez, Marina Ciancia, Alberto S. Cerezo

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

The room-temperature-extracted fraction from the red seaweed Kappaphycus alvarezii consists mainly of low-molecular-weight carrageenans, with structural dispersion around a basic κ-pattern. This dispersion results from: (a) low percentages of 3,6-anhydrogalactose and the presence of precursor units; (b) important quantities of 6-Ο-methyl β-D-galactose (4-sulfate) residues; (c) significant amounts of i-repeating structure, and (d) small amounts of non-sulfated and disulfated β-D-galactose residues. Significant quantities of β-L-galactose units suggest the presence of agaroids, as it has been reported in several other carrageenophytes.

Original languageEnglish
Pages (from-to)287-299
Number of pages13
JournalCarbohydrate Research
Volume325
Issue number4
DOIs
Publication statusPublished - 1 Jan 2000
Externally publishedYes

Keywords

  • Carrageenans
  • Kappaphycus alvarezii
  • L-Galactose
  • Low molecular weight
  • Room-temperature extract
  • Seaweed polysaccharides
  • Structure determination

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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