AMYLOSE SYNTHESIS IN DIMETHYL SULFOXIDE

PROBLEM TO BE SOLVED: To provide synthetic amylose dissolved in an organic solvent phase having dimethyl sulfoxide as a major component. SOLUTION: A method, involving synthesizing amylose in an aqueous solvent phase having water as a major component and obtaining the synthesized amylose in a dissolved form in an organic solvent phase having dimethyl sulfoxide as a major component, comprises a step of bringing an amylose synthesis enzyme into contact with an amylose synthesis substrate in an aqueous solvent phase to synthesize amylose, wherein although the aqueous solvent phase is in contact with the organic solvent phase in a hydrogel or on its surface, the contact between the water in the aqueous solvent phase and the dimethyl sulfoxide in the organic solvent phase is restricted by the hydrogel, and consequently the dimethyl sulfoxide does not substantially infiltrate into the aqueous solvent phase from the organic solvent phase, and the synthesized amylose migrates into the organic solvent phase from the aqueous solvent phase, and the synthesized amylose is obtained in a dissolved form in the organic solvent phase. COPYRIGHT: (C)2010,JPO&INPIT