| abstract |
(57) [Summary] [Objective] To provide an efficient biodegradable polymer production method by a microorganism which has a high polymer production rate, a high intracellular accumulation rate, and is safe and easy to handle. [Composition] A method for producing a polyhydroxy organic acid ester, which comprises culturing a microorganism belonging to the genus Rhodobacter under aerobic conditions to produce a polymer consisting of the polyhydroxy organic acid ester, and at that time belongs to the genus Rhodobacter The culture of the microorganism is carried out in a medium containing a nitrogen source, 1 Method for producing polyhydroxy organic acid ester or a method for producing polyhydroxy organic acid ester which is carried out in two steps of pre-cultivation for growth and subsequent nitrogen starvation culture for culturing a microorganism belonging to the genus Rhodobacter Is. |