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METHOD FOR PROMOTING STORAGE MATERIAL PRODUCTION BY ALGA NEW

外国特許コード F190009761
整理番号 (S2017-0706-N0)
掲載日 2019年5月7日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2018JP017865
国際公開番号 WO 2018207804
国際出願日 平成30年5月9日(2018.5.9)
国際公開日 平成30年11月15日(2018.11.15)
優先権データ
  • 特願2017-093581 (2017.5.10) JP
発明の名称 (英語) METHOD FOR PROMOTING STORAGE MATERIAL PRODUCTION BY ALGA NEW
発明の概要(英語) [Problem] To provide a method, whereby an alga can be continuously cultured using a low-cost and simple means for inducing lipid synthesis, in order to efficiently utilize the alga as a biomass.
[Solution] A method for promoting the production of a storage material by an alga, said method comprising a step for continuously culturing and proliferating the alga under light irradiation conditions in a culture solution containing an oxystress inducing agent.
従来技術、競合技術の概要(英語) BACKGROUND ART
To suppress generation of carbon dioxide as a clean energy source, fuel derived from biomass (biofuel) is expected. Biofuels, algae, animal oils, soy, corn, oil and other cereal or the like produced using the various resources may be, the algae are, for each of the grain or the like to cause a problem of an increase in contrast they are not concerned with the food, is easy to culture, the type of the storage material and the production efficiency can be adjusted, are of particular interest as next generation energy source. So far, such as fats and sugars, increase the production capacity of the storage material of the algae a variety of methods have been studied.
Algae, nutritional deficiencies including nitrogen can be accumulated by the fat is known, the growth of algae is deteriorated by the nutritional deficiencies. That is, to suppress the production of biomass such as stress state, inducing the accumulation of fat in the algae is considered. Biomass production or both of the amount of fat and 1 as one means, algae biomass in optimized conditions to increase after culturing algae, fat accumulation is changed to the stress conditions to maximize the two-stage culture is being performed (for example, see Non-Patent Document 1). Such as a nitrogen starvation of the stress state, the active oxygen species in the growth of algae (ROS) results in an increase, the oxidation stress accumulation of fat in the algae is a mediator has been suggested (for example, see Non-Patent Document 2).
The inventors of the present invention, the leaves of green algae in the body by increasing the concentration of glutathione, nutrient limitation without performing the step, can improve the productivity of the biomass was found to be (for example, see Patent Document 1). The mechanism in its metabolism, oxidative stress and the productivity of the storage material and the relation between. Oxidative stress and lipid content to provide the algae is increased have been reported to another device (for example, see Patent Document 2 and 3).
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • KEIO UNIVERSITY
  • 発明者(英語)
  • ITO Takuro
  • OGAWA KENICHI
  • NISHIKAWA Masanobu
国際特許分類(IPC)
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