Structural features of a polysaccharide from the mucin of water hyacinth

Yernool V. Anjaneyalu, Channe Gowda, Belakavadi Neelisiddiah

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The mucin found in the nodal region of the weed, water hyacinth (Eichhornia crassipes), is a heteropolysaccharide composed of d-xylose, l-galactose and l-arabinose in the mol ratio of 1.3:1.2:1.0. Partial hydrolysis with acid gave four oligosaccharides which were characterized as: d-Xylp-(1 → 3)-l-Ara, l-Galp-(1 -→ 2)-l-Ara, d-Xylp-(1 → 3)-l-Galp-(1 → 2)-l-Ara, and d-Xylp-(1 → 2)-d-Xylp-(1 → 3)-l-Galp-(1 → 2)-l-Ara. These, together with the results of methylation analysis using GC and GC/MS and periodate oxidation, indicated that the trisaccharide repeating unit, → 4)-d-Xylp-(1 → 3)-l-Galp-(1 → 2)-l-Araf-(1 →, constitutes the backbone of the polysaccharide. Further, all the d-xylopyranosyl residues of the backbone are substituted at O-2 and, in addition, one out of seven such residues is also substituted at O-3; the substituents being l-Araf-(1 →, d-Xylp-(1 →, l-Galp-(1 →, d-Xylp-(1 → 3)-l-Araf-(1 →, residues.

Original languageEnglish (US)
Pages (from-to)1961-1963
Number of pages3
JournalPhytochemistry
Volume22
Issue number9
DOIs
StatePublished - Jan 1 1983

Fingerprint

Eichhornia
Trisaccharides
Arabinose
Eichhornia crassipes
Methylation
mucins
Xylose
Mucins
Oligosaccharides
Galactose
Polysaccharides
Hydrolysis
polysaccharides
trisaccharides
Oxidation
Acids
Water
arabinose
xylose
oligosaccharides

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology
  • Plant Science
  • Horticulture

Cite this

Anjaneyalu, Yernool V. ; Gowda, Channe ; Neelisiddiah, Belakavadi. / Structural features of a polysaccharide from the mucin of water hyacinth. In: Phytochemistry. 1983 ; Vol. 22, No. 9. pp. 1961-1963.
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Structural features of a polysaccharide from the mucin of water hyacinth. / Anjaneyalu, Yernool V.; Gowda, Channe; Neelisiddiah, Belakavadi.

In: Phytochemistry, Vol. 22, No. 9, 01.01.1983, p. 1961-1963.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Structural features of a polysaccharide from the mucin of water hyacinth

AU - Anjaneyalu, Yernool V.

AU - Gowda, Channe

AU - Neelisiddiah, Belakavadi

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N2 - The mucin found in the nodal region of the weed, water hyacinth (Eichhornia crassipes), is a heteropolysaccharide composed of d-xylose, l-galactose and l-arabinose in the mol ratio of 1.3:1.2:1.0. Partial hydrolysis with acid gave four oligosaccharides which were characterized as: d-Xylp-(1 → 3)-l-Ara, l-Galp-(1 -→ 2)-l-Ara, d-Xylp-(1 → 3)-l-Galp-(1 → 2)-l-Ara, and d-Xylp-(1 → 2)-d-Xylp-(1 → 3)-l-Galp-(1 → 2)-l-Ara. These, together with the results of methylation analysis using GC and GC/MS and periodate oxidation, indicated that the trisaccharide repeating unit, → 4)-d-Xylp-(1 → 3)-l-Galp-(1 → 2)-l-Araf-(1 →, constitutes the backbone of the polysaccharide. Further, all the d-xylopyranosyl residues of the backbone are substituted at O-2 and, in addition, one out of seven such residues is also substituted at O-3; the substituents being l-Araf-(1 →, d-Xylp-(1 →, l-Galp-(1 →, d-Xylp-(1 → 3)-l-Araf-(1 →, residues.

AB - The mucin found in the nodal region of the weed, water hyacinth (Eichhornia crassipes), is a heteropolysaccharide composed of d-xylose, l-galactose and l-arabinose in the mol ratio of 1.3:1.2:1.0. Partial hydrolysis with acid gave four oligosaccharides which were characterized as: d-Xylp-(1 → 3)-l-Ara, l-Galp-(1 -→ 2)-l-Ara, d-Xylp-(1 → 3)-l-Galp-(1 → 2)-l-Ara, and d-Xylp-(1 → 2)-d-Xylp-(1 → 3)-l-Galp-(1 → 2)-l-Ara. These, together with the results of methylation analysis using GC and GC/MS and periodate oxidation, indicated that the trisaccharide repeating unit, → 4)-d-Xylp-(1 → 3)-l-Galp-(1 → 2)-l-Araf-(1 →, constitutes the backbone of the polysaccharide. Further, all the d-xylopyranosyl residues of the backbone are substituted at O-2 and, in addition, one out of seven such residues is also substituted at O-3; the substituents being l-Araf-(1 →, d-Xylp-(1 →, l-Galp-(1 →, d-Xylp-(1 → 3)-l-Araf-(1 →, residues.

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