| abstract |
PURPOSE:To obtain a polysaccharide useful as a thickening agent, etc., having specific constituent components, constitution ratio and molecular weight industrially and advantageously, by cultivating a callus derived from a plant belonging to the genus Polianthes L., in a plant hormone containing medium and collecting a product from a culture mixture. CONSTITUTION:A callus derived from a plant (e.g. Polianthes tuberosa L.) belonging to the genus Polianthes L., is cultivated in a plant hormone containing medium and a polysaccharide is collected from the culture mixture to give an acidic heteropolysaccharide which contains arabinose, mannose, galactose, glucuronic acid and xylose as constituent components, bond style and constitution ratio shown by the formula and 1.0X10<4>-2X10<7>. |