Isolation and Identification of a Photosynthetic Bacterium Containing a High Content of Coenzyme Q_(10)

摘要

To develop a potent strain for the production of coenzyme Q_(10), a photosynthetic bacterium was isolated from silt of the Nakdong River in Korea. Using 16S-rDNA sequence analysis, the isolated strain was identified as Rhodobacter sphaeroides. A stable improvement in its CoQ_(10) content was achieved by chemical mutation, upon which the content of CoQio (2.94 mg/g dry cell) was increased by approximately 1.9-fold, comparable to that of R. sphaeroides reported in other studies. The isolate is a potentially valuable microorganism for mass production of CoQio, and may provide an appropriate model for further study of economical mass production.