Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Isolation and Identification of a Photosynthetic Bacterium Containing a High Content of Coenzyme Q10

  • Jeong, Soo-Kyoung (Department of Biotechnology, Pukyong National University) ;
  • Ahn, Soon-Cheol (Department of Microbiology and Immunology, Pusan National University, School of Medicine) ;
  • Kong, In-Soo (Department of Biotechnology, Pukyong National University) ;
  • Kim, Joong-Kyun (Department of Biotechnology, Pukyong National University)
  • Published : 2008.09.30
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Abstract

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 l6S-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 $CoQ_{10}$(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 $CoQ_{10}$, and may provide an appropriate model for further study of economical mass production.

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