| 摘要 |
PURPOSE:To efficiently obtain a copolymer useful for medicines, foods, sanitary articles, etc., by culturing a microorganism belonging to the genus Pseudomonas and producing a copolymer having specific physicochemical properties, specified constituents, etc. CONSTITUTION:The production method of the objective copolymer comprises culturing a microorganism belonging to the genus Pseudomanas, such as Pseudomonas S.P. 31-1 strain (FERM P-13280) and producing a copolymer in an amount of 80-95X in the dried cells, the copolymer comprising (A) (i) 1-40% of 3-hydroxyhexanoate units, (ii) 10-95% of 3-hydroxyoctanoate units, (iii) 0-70% of 3-hydroxydecanoate units, and (iv) 0-40% of 3-hydroxydodecanoate units, and having physicochemical properties comprising (B) a number-average mol.wt. of 50000-1000000, (C) a melting point of 35-70 deg.C or no clear melting point, (D) a glass transition point of -20 to -50 deg.C. and (E) solubility: soluble in chloroform, dichloromethane, 1,2-dichloroethane, acetone; and in soluble in water. |
