• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2021 Fiscal Year Final Research Report

Production of fish oil-alternatives from food waste toward to realizing robust aquaculture

Research Project

  • PDF
Project/Area Number 19KT0012
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund
Section特設分野
Research Field Agricultural Resources for the Next Generation
Research InstitutionHiroshima University

Principal Investigator

Nakai Satoshi  広島大学, 先進理工系科学研究科(工), 教授 (80313295)

Co-Investigator(Kenkyū-buntansha) 堀 知行  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 主任研究員 (20509533)
梅原 亮  広島大学, 環境安全センター, 助教 (40825791)
海野 徹也  広島大学, 統合生命科学研究科(生), 教授 (70232890)
Project Period (FY) 2019-07-17 – 2022-03-31
Keywordsラビリンチュラ類 / 代替魚油 / 有機性廃液 / 有機性排水 / 海産魚養殖
Outline of Final Research Achievements

Certain Labyrinthuleans produce DHA and EPA. The objective of this study was to cultivate the microorganisms using organic wastes and organic wastewaters without sterilization and to use the biomass as an alternative fish oil. The microorganisms could be cultivated using organic wastes and organic wastewaters under unsterile conditions by adjusting pH and salinity. Biomass of the microorganisms were digestible by fish, and we confirmed that feeding the biomass increased the content of DHA and EPA in the sea bream juveniles. This confirms that Labyrinthuleans can be used as an alternative fish oil. No pathogenic bacteria were detected in the culture solution of the microorganisms using the food wastes.

Free Research Field

環境化学工学

Academic Significance and Societal Importance of the Research Achievements

海産魚の成育において、ドコサヘキサエン酸(DHA)、エイコサペンタエン酸(EPA)が必須であり、養魚飼料にはこれらを含む魚油が添加されてきた。一方、DHAやEPA含有食品の消費の拡大により魚油の需要は増加の一途にあり、魚油の原料となる魚の漁獲量には限界がある。本研究では、有機性廃棄物や有機性排水などを用い、DHAやEPAを生産するラビリンチュラ類を培養する方法を見出すと共に、得られるバイオマスが代替魚油として魚の餌に加えることが可能であることを明らかにした。

URL: 

Published: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi