Random copolymer comprising D-(-)-3-hydroxybutyrate units and D-(-)-3-hydroxyvalerate, and process for production thereof
Abstract
Abstract A random copolymer comprising less than 50 mole % of D-(-)-3-hydroxybutyrate units and more than 50 mole % of D-(-)-3-hydroxyvalerate units, the percentages being based on the total amount of the two units. A process for producing the random copolymer which comprises (1) cultivating a microorganism having the ability to produce poly(3-hydroxybutyrate) to grow and proliferate the cells of the microorganism, (2) cultivating the cells in the presence of a valeric acid or in the copresence of a valeric acid and an n-butyric acid while limiting the amount of nitrogen or phosphorus to produce and accumulate a random copolymer comprising D-(-)-3-hydroxybutyrate units and D-(-)-3-hydroxyvalerate units within the cells, and thereafter, (3) recovering the copolymer from the cells.
Inventors
- 👤 Yoshiharu Doi
Bibliographic Details
Claims Analysis
Total Claims: 4References Cited (Backward Citations)
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