, Volume 24, Issue 4, pp 296–298 | Cite as

The common occurrence of furan fatty acids in plants

  • Kerstin Hannemann
  • Volker Puchta
  • Ernst Simon
  • Herta Ziegler
  • Gunter Ziegler
  • Gerhard Spiteller


The observation that F-acids (1) occur in rat chow initiated a search for F-acids in human diet. We observed that the amount of F-acids with a pentyl side chain in α-position taken up with a one-day diet correlates well with the amount of excreted degradation products, the pentyl urofuran acids (2), (3) and (4). Therefore it can be concluded that F-acids with a pentyl side chain are not produced in the human body but are introduced through the diet. The origin of F-acids carrying an α-propyl side chain is less clear. The amount of propyl-urofuran acids (2) and (3) excreted in urine was found in one case out of three to be five times higher than the amount of F-acids carrying a propyl group in α-position taken up by the diet. Therefore, it can presently not be excluded that a portion of the propyl F-acids is produced by the body.

F-acids found in human food are mainly introduced into the body by vegetables and fruits. F-acids were found also in birch leaves in considerable amounts, as well as in grasses, dandelion and clover leaves. Thus, we can conclude that F-acids are common constituents of plants.


Pentyl Agaricus Bisporus Peak Area Integration Potassium Hydroxide Solution Glass Capillary Column 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



flame ionization detector


gas chromatography


mass spectrometry


thin-layer chromatography


wall-coated open tubular


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Copyright information

© American Oil Chemists’ Society 1989

Authors and Affiliations

  • Kerstin Hannemann
    • 1
  • Volker Puchta
    • 1
  • Ernst Simon
    • 1
  • Herta Ziegler
    • 1
  • Gunter Ziegler
    • 1
  • Gerhard Spiteller
    • 1
  1. 1.Lehrstuhl fur Organische Chemie 1 der Universitat BayreuthBayreuthFederal Republic of Germany

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