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

Study on the improvement of the oxidative stability of DHA and FPA

Research Project

Project/Area Number 05660225
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Fisheries chemistry
Research InstitutionHokkaido University

Principal Investigator

MIYASHITA Kazuo  Hokkaido Univ., Fac.of Fish., Instructor, 水産学部, 助手 (10182015)

Co-Investigator(Kenkyū-buntansha) ITABASHI Yutaka  Hokkaido Univ., Fac.of Fish., Assoc.Prof., 水産学部, 助教授 (60142709)
OTA Toru  Hokkaido Univ., Fac.of Fish., Professor, 水産学部, 教授 (20001612)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1994: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1993: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsPolyunsaturated fatty acids / DHA / EPA / Oxidative stability / Antioxidation / Emulsification / Aqueous solution / 酸化防止
Research Abstract

The oxidative stability of polyunsaturated fatty acids (PUFAs) decreases with their increasing degree of unsaturation.However, the oxidative stability of PUFAs in an aqueous solution was quite different from that in the neat phase, and 22 : 6n-3 was most oxidatively stable, followed by 20 : 5n-3,20 : 4n-6,18 : 3n-3,18 : 3n-6, and 18 : 2n-6, each in an aqueous phase.The same tendency was observed in the aqueous oxidation of triacylglycerols (TGs) and phosphatidylcholines (PCs).TG from orbital fat of a tuna was more susceptible to oxidation than soybean oil TG in the air, however, the former became oxidatively more stable than the latter in an emulsion.Salmon egg PC was also more stable to oxidation than soybean PC in an aqueous soution, although the average degree of unsaturation of salmon egg PC was higher than that of soybean PC.
The characteristic oxidative stability of polyunsaturated lipids in an aqueous solution may be correlated with the conformation of the lipid molecule and/or the nature of lipid aggregation.The present findings will be important for undestanding the oxidative stability of polyunsaturated lipids in a biological systems and show the possibility of protection of fish oils from their oxidations by dispersing them in an aqueous solution.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 宮下和夫: "水溶液中でのn-3系及びn-6系高度不飽和脂肪酸の酸化安定性について" 脂質生化学研究. 35. 359-362 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kazuo Miyashita: "oxidative Stability of polyunsaturated Fatty Acids in an Aqueous Solution" Biosci. Biotech. Biochem.57. 1638-1640 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 宮下和夫: "高度不飽和リン脂質の水系での酸化安定性" 脂質生化学研究. 36. 129-132 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 宮下和夫: "高度不飽和脂質の水系での酸化挙動について" 食品加工技術. 14. 228-235 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kazuo Miyashita: "Oxidative Stability of Free Fatty Acid Mixtures from Soybean, Linseed, and Sardine Oils in an Aqueous Solution" Fisheries Sci.60. 315-318 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kazuo Miyashita: "Comparative Study on the Oxidative Stability of Phosphatidylcholines fromSalmon Egg and Soybean in an Aqueous Solution" Biosci. Biotech. Biochem.58. 1772-1775 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Miyashita: "Oxidative Stability of n-3 and n-6 Polyunsaturated Fatty Acids in an Aqueous Solution." Proc.Japan.Cof.Biochem.Lipids. 35. 359-362 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Miyashita: "Oxidative Stability of Polyunsaturated Fatty Acids in an Aqueous Solution." Biosci.Biotech.Biochem.57. 1638-1640 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Miyashita: "Oxidative Stability of Polyunsaturated Phosphatidylcholines in an Aqueous Solution." Proc.Japan.Cof.Biochem.Lipids. 36. 129-132 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Miyashita: "Oxidation Polyunsaturated Lipids in an Aqueous Phase." J.Japanese Soc.Food.Eng.14. 228-235 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Miyashita: "Oxidative Stability of Free Fatty Acid Mixtures from Soybean, Linseed, and Sardine Oils in an Aqueous Solution." Fisheries Sci.60. 315-318 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Miyashita: "Comparative Study on the Oxidative Stability of Phosphatidylcholines from Salmon Egg and Soybean in an Aqueous Solution." Biosci.Biotech.Biochem.58. 1772-1775 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 宮下和夫: "高度不飽和リン脂質の水系での酸化安定性" 脂質生化学研究. 36. 129-132 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 宮下和夫: "高度不飽和脂質の水系での酸化挙動について" 食品加工技術. 14. 228-235 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Kazuo Miyashita: "Oxidative Stability of Free Fatty Acid Mixtures from Soybean,Linseed,and Sardine Oils in an Aqueous Solution" Fisheries Sci.60. 315-318 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Kazuo Miyashita: "Comparative Study on the Oxidative Stability of Phosphatidylcholines from Salmon Egg and Soybean in an Aqueous Solution" Biosci.Biotech.Biochem.58. 1772-1775 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Kazuo Miyashita: "Oxidative Stability of Polyunsaturated Fatty Acids in an Aqueous Solution" Biosci.Biotech.Biochem.57. 1638-1640 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 宮下和夫: "水溶液中でのn-3系及びn-6系高度不飽和脂肪酸の酸化安定性について" 脂質生化学研究. 35. 359-362 (1993)

    • Related Report
      1993 Annual Research Report

URL: 

Published: 1993-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi