PRODUCTION OF COPOLYESTER

摘要

PURPOSE:To produce a copolyester comprising a 3-hydroxybutylate unit (3HB) and a 4-hydroxybutyrate(4HB) unit, having a higher ratio (molecular ratio) of 4HB composition to 3HB component industrially and readily. CONSTITUTION:When a bacterium capable of producing a poly 3- hydroxybutylate is incorporated with citric acid and/or a citrate in the presence of a substrate and cultured a copolyester having a higher ratio of 4HB component to 3HB component is formed to readily produce a copolyester having a high ratio of 4HB component.