Abstract
A glucomannan containing d-glucopyranosyl and d-mannopyranosyl residues in the molar ratio ca 1:3·3 has been extracted with water from the tubers of Orchis morio. The polysaccharide has a View the MathML sourcen of ca 665 and consists of a backbone of β(1 → 4)- linked glucosyl and mannosyl residues with ca. 7 branch points per molecule, probably at C3 positions of the hexose residues. The ...
Abstract
A glucomannan containing d-glucopyranosyl and d-mannopyranosyl residues in the molar ratio ca 1:3·3 has been extracted with water from the tubers of Orchis morio. The polysaccharide has a View the MathML sourcen of ca 665 and consists of a backbone of β(1 → 4)- linked glucosyl and mannosyl residues with ca. 7 branch points per molecule, probably at C3 positions of the hexose residues. The polysaccharide contains acetyl groups linked almost exclusively to the C2 or C3 positions of mannose residues. Structural studies showed that this water-extracted glucomannan is similar to the material of the mucilage globules which had been mechanically separated and isolated from the tissue of young tubers.
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