Polysaccharides in Fungi. XXII. : A Water-Soluble Polysaccharide from the Alkaline Extract of the Insect-Body Portion of Chan hua (Fungus : Cordyceps cicadae)

• 木方 正

  Gifu Pharmaceutical University

• 伊藤 雅彦

  Gifu Pharmaceutical University

• 永井 勝幸

  Gifu Pharmaceutical University

• 原 千尋

  Shotoku Gakuen Women's Junior College

• 鵜飼 茂夫

  Gifu Pharmaceutical University

抄録

A water-soluble polysaccharide (CI-5N), [α]_D +30°in water, was isolated from the alkaline extract of the insect-body portion of Chan hua (Chinese name) (fungus : Cordyceps cicadae). CI-5N was homogeneous on gel filtration and gave a single spot on glass-fiber paper-electrophoresis. It was composed of d-mannose, D-galactose, and D-glucose in the molar ratio of 1.0 : 0.67 : 0.23,and was free from protein. The molecular weight was estimated by gel fitration to be ca. 39000. The polysaccharide had affinity for concanavalin A. From the results of methylation analysis Smith degradation, stepwise hydrolysis, and carbon-13 nuclear magnetic resonance, it was concluded that the polysaccharide has a highly branched structure, and is composed of (1→6)-linked and (1→2)-linked α-D-mannopyranosyl residues, and (1→2)-linked α-D-glucopyranosyl residues. Some of the D-mannopyranosyl residues are present as branching points of (1→2,6)-linkage, and the branches contain short chains having (1→2)-linked β-D-galactofuranosyl residues and single β- and/or α-D-galactofuranosyl residues.

収録刊行物

• Chem. Pharm. Bull.

  Chem. Pharm. Bull. 36 3032-3037, 1988

  公益社団法人日本薬学会

キーワード

• polysaccharide
• Chan hua
• Cordyceps cicadae
• molecular weight
• methylation analysis
• ^<13>C-NMR
• Con A affinity
• polysaccharide structure
• galactoglucomannan

詳細情報

• CRID: 1574231877206155520
• NII論文ID: 110003627182
• NII書誌ID: AA00602100
• ISSN: 00092363
• 本文言語コード: en
• データソース種別:
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