Oxidative Stability of Polyunsaturated Fatty Acids in an Aqueous Solution

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概要

• 論文の詳細を見る

• The relative oxidative stability of six kinds of typical polyunsaturated fatty acids (PUFAs) was investigated in an aqueous solution (pH = 7.4 at 37℃) with Fe^<2+> -ascorbic acid as a catalyst. The highest stability was shown by docosahexaenoic acid (22 : 6n-3, DHA), followed by eicosapentaenoic (20 : 5n-3), arachidonic (20 : 4n-6), α-linolenic (18 : 3n-3), γ-linolenic (18 : 3n-6), and linoleic (18 : 2n-6, LA) acids, indicating that the stability increased with increasing degree of unsaturation. The significant difference found between α-linolenic and γ-linolenic acids also suggests the higher oxidative stability of n-3 PUFAs than of n-6 PUFAs in an aqueous solution. Moreover, when a mixture of DHA and LA was oxidized in an aqueous solution, the stability increased with increasing molar ratio of DHA to LA in the mixture. This characteristic oxidative stability of PUFAs in the aqueous phase is quite different from that in the neat phase, and can be explained by correlating with the conformation of PUFAs in the aqueous medium.

• 社団法人日本農芸化学会の論文
• 1993-10-23

著者

• Nara E

  Department Of Chemistry Faculty Of Fisheries Hokkaido University

• NARA Eiichi

  Department of Bioresources Chemistry, Graduate School of Fisheries Science, Hokkaido University

• MIYASHITA Kazuo

  Department of Bioresources Chemistry, Graduate School of Fisheries Science, Hokkaido University

• OTA Toru

  Department of Marine Bioresources Chemistry, Faculty of Fisheries, Hokkaido University

• Ota T

  Kyowa Hakko Kogyo Co. Ltd. Tokyo Jpn

• Ota Toru

  Department Of Agricultural Chemistry Faculty Of Agriculture Tokyo University Of Agriculture

• Miyashita Kazuo

  Department Of Chemistry Faculty Of Fisheries Hokkaido University

• Nara Eiichi

  Department Of Bioresources Chemistry Graduate School Of Fisheries Science Hokkaido University

• Miyashita K

  Hokkaido Univ. Sapporo Jpn

• Miyashita Kazuo

  Department Of Bioresources Chemistry Graduate School Of Fisheries Sciences Hokkaido University

• Miyashita Kazuo

  Department Of Bioresources Chemistry Graduate School Of Fisheries Science Hokkaido University

• Miyashita Kazuo

  Department Of Bioengineering Graduate School Of Bioscience And Biotechnology Tokyo Institute Of Technology

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