Structural Analysis of Extracellular Polysaccharide of Sclerotinia libertiana

Abstract

An extracellular polysaccharide (I) was isolated from the viscous culture filtrate of S. libertiana and subjected to methylation study, enzymic hydrolysis and Smith degradation. From the results, I was concluded to be a polysaccharide composed of a backbone of β-(1→3)-linked D-glucopyranosyl residues and possessed a single β-n-glucopyranosyl residue joined through C-6 of every third D-glucopyranosyl residue of the backbone.