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Planta Med 1985; 51(4): 293-297
DOI: 10.1055/s-2007-969494
Research Articles

© Georg Thieme Verlag Stuttgart · New York

Structural Features of Plantago lanceolata Mucilage

M. Bräutigam, G. Franz
  • Lehrstuhl für Pharmazeutische Biologie der Universität, D-8400 Regensburg
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Publication History

1984

1985

Publication Date:
26 February 2007 (online)

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Abstract

The water soluble crude polysaccharide fraction from Plantago lanceolata leaves is composed of L-arabinose (20%),D-galactose (28%), D-glucose (6%), D-mannose (2%), L-rhamnose (4%), D-galacturonic acid (31%), D-glucuronic acid (7%) and minor amounts of L-fucose and D-xylose.

The total polysaccharide extract could be separated on DEAE-cellulose into three distinct polysaccharide fractions, two of which, FI (neutral) and FII (acidic), were subjected to further structural investigations. While FI could be fractionated into two subfractions (FIa, MW: 8000; FIb, MW: 25000) by gel chromatography, FII proved to be homogeneous (MW: 70000).

Analysis of component sugars, reduction and methylation, 13C-NMR spectroscopy and partial acid degradation studies made it possible to suggest the structural repeating units for the polysaccharides in FI and FII.

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