Conversion of Linoleic Acid to its Conjugated Isomers in Subcritical Water

Chisako Usuki, Yukitaka Kimura, Shuji Adachi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Linoleic acid was heated in the presence or absence of water in the temperature range of 200 to 260°C using a pressure-resistant batch reactor to examine the possibility of its conversion to conjugated isomers. The conversion occurred at very low yields, and the major products were the c9, tll and tl0, cl2 conjugated linoleic acids. The tl0, cl2 isomer seemed to be produced more than the c9, tll, and the ratio of the isomers did not depend on both the temperature and the ratio of linoleic acid to water. When a dilute potassium hydroxide was used as the aqueous solution, the yield of the conjugated isomers was lower than that of the isomers in the mixture of linoleic acid with distilled water.

Original languageEnglish
Pages (from-to)147-150
Number of pages4
JournalJapan Journal of Food Engineering
Issue number2
Publication statusPublished - 2006
Externally publishedYes


  • conjugated linoleic acid
  • isomerization
  • linoleic acid
  • subcritical water

ASJC Scopus subject areas

  • Food Science
  • Industrial and Manufacturing Engineering


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