:Improvements of the Original Method for the Preparation of the Complex

概要

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The original method for the preparation of inclusionn complex of various polar organic compounds in the granule of polysaccharides was improved. (1) The complex has been prepared with the system composed of anhydrous polysaccharide, methanol and guest compound, and in this system the inclusion was always inhibited by the moisture. On the other hand, it was found that on the system in which ethanol was used as a solvent, the adequate amount of moisture promoted the inclusion and that the moisture in the interior of polysaccharide granule was more effective than that in the solvent. (2) In the original method the air-drying procedure was initiated under the condition in which large excess of solvent was present. On the basis of the elucidation of initiation conditions of the actual inclusion, the amount of solvent was reduced to 1/3 its original one. The improvement offered saving solvent, reducing air-drying period and increasing included amount of guests with lower boiling point. (3) For the preparation of complex with high content of guest the air-drying procedure was essential. (4) At least, with regard to benzaldehyde, the considerable amount (60 mg/g) could be included ever with water as a carrier solvent.
日本応用糖質科学会の論文