Studies on uronic acid materials. Part XV. The use of molecular-sieve chromatography in studies on acacia senegal gum (gum arabic)

D. M W Anderson, J. F. Stoddart

Research output: Contribution to journalArticle

105 Scopus citations

Abstract

Investigations involving fractional precipitation of A. senegal gum by sodium sulphate lead to a discussion on the type of heterogeneity exhibited by the gum. Molecular-sieve chromatography is used to estimate number-average molecular weights. Results obtained using this chromatographic technique on the degraded gum produced on autohydrolysis indicate that such mild conditions of hydrolysis are not always very selective as a means of degradation. The degraded gum is shown to have galactose residues as reducing end-groups. There is no evidence for labile, internal, arabinofuranosyl linkages in the whole gum. In addition, chromatographic evidence is obtained for the presence of 6-O-(4-O-methyl-β-D-glucopyranosyluronic acid)-D-galactose residues in A. senegal gum.

Original languageEnglish (US)
Pages (from-to)104-114
Number of pages11
JournalCarbohydrate Research
Volume2
Issue number2
DOIs
StatePublished - Jun 1966

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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