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Structure and properties of an extracellular polysaccharide from Laetisaria arvalis. Evaluation of its antitumour activity

Aouadi, S. ; Heyraud, A. ; Seigle-Murandi, F. ; Steinmann, R. ; Kraus, J. ; Franz, Gerhard


A polysaccharide isolated from the culture filtrate of Laetisaria arvalis (Basidiomycete) has been submitted to acid hydrolysis, periodate oxidation, Smith degradation, methylation analysis, and treatment with endo-(1 → 3)-β-D-glucanase. A 6-O-branched (1 → 3)-β-D-glucan with a structure similar to that of scleroglucan has been identified. In aqueous solution, this polysaccharide develops high ...


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