Depolymerization of sodium alginate under hydrothermal conditions

Taku Michael Aida, Takuji Yamagata, Masaru Watanabe, Richard L. Smith

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

The depolymerization of sodium alginate with hydrothermal treatment (180-240 °C) was studied to understand the selectivity of monosaccharide generation. Alginate depolymerized to oligosaccharides, monosaccharides and decomposition products that included lactic acid and glycolic acid. Alginate depolymerization under hydrothermal conditions occurred in a manner that initially released mannuronic acid (M) and then was followed by the release of guluronic acid (G). Monosaccharides were generated through the hydrolysis of the glycosidic bonds between the unit monomer with different selectivities among M-M, M-G and G-G units rather than random sites within alginate. Hydrothermal treatments shows promise as a method to modify the structure of alginate polymers. Crown

Original languageEnglish
Pages (from-to)296-302
Number of pages7
JournalCarbohydrate Polymers
Volume80
Issue number1
DOIs
Publication statusPublished - 2010 Mar 25

Keywords

  • Alginate
  • Decomposition
  • Depolymerization
  • Guluronic acid
  • Hydrolysis
  • Hydrothermal
  • Mannuronic acid
  • Monosaccharide
  • Polysaccharide

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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