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Document Type and Number:
WIPO Patent Application WO/2016/163382
Kind Code:
Provided is a method for producing an organic acid, whereby it becomes possible to produce the organic acid from a microalga effectively. An organic acid can be produced effectively by allowing carbon dioxide and an optical energy to be utilized directly by a microalga and then collecting the organic acid, which is an intercellular metabolite of the microalga, from the microalga. Specifically, an organic acid is produced by culturing a microalga in an aqueous medium containing carbonate ions and/or bicarbonate ions and then collecting the organic acid which is an intercellular metabolite of the microalga. Alternatively, an organic acid is produced by culturing a microalga, in which the function of a NADPH-O2 oxidoreductase and/or the function of a rate-controlling enzyme in the glycolytic system from glycogen to the citric acid cycle is enhanced, in an aqueous medium and then collecting the organic acid which is an intercellular metabolite of the microalga. For example, succinic acid, among organic acids, has been produced utilizing petroleum or the like as a raw material. According to the method of the present invention, an organic acid can be produced by effectively utilizing a biomass. The organic acid produced by the method can be used effectively in foods, medicines and other various fields.

HASUNUMA, Tomohisa (1-1 Rokkodai-cho, Nada-ku, Kobe-sh, Hyogo 01, 〒6578501, JP)
Application Number:
Publication Date:
October 13, 2016
Filing Date:
April 06, 2016
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NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY (1-1 Rokkodai-cho, Nada-ku Kobe-sh, Hyogo 01, 〒6578501, JP)
International Classes:
C12P7/40; C12N1/13; C12P7/44; C12P7/46; C12N1/21; C12N15/09
Domestic Patent References:
Foreign References:
Other References:
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Attorney, Agent or Firm:
SHOJI, Takashi et al. (#307 Miyuki Bldg, 5-6-13 Nishinakajima, Yodogawa-ku, Osaka-sh, Osaka 11, 〒5320011, JP)
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