Patents Assigned to Cosmo Research Intitute
  • Microorganisms producing 5-aminolevulinic acid and processes for producing 5-aminolevulinic acid by using the same
    Patent number: 6342377
    Abstract: Microorganisms producing 5-aminolevulinic acid which show a 5-aminolevulinic acid synthetase activity of 2 to 7 (nmol/min/mg protein) under aerobic culture conditions with a dissolved oxygen concentration of 0.70 to 6.60 ppm; a process for producing 5-aminolevulinic acid characterized by culturing one or more microorganisms and harvesting 5-aminolevulinic acid from the obtained culture; a process for producing 5-aminolevulinic acid characterized by culturing 5-aminolevulinic acid-producing microorganisms in a medium containing 5 to 500 &mgr;M of iron components; and a method for culturing 5-aminolevulinic acid-producing microorganisms.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: January 29, 2002
    Assignees: Cosmo Research Intitute, Cosmo Oil Co., Ltd.
    Inventors: Seiji Nishikawa, Tohru Tanaka, Tomomi Kaminaga, Kikuo Watanabe, Nobuya Miyachi, Keitaro Watanabe, Yasushi Hotta