Nicht methylenunterbrochene cis,cis-Octadecadiensäuren Minor Constituents of Human Milk, VI Non Methylene Interrupted cis,cis-Octadecadienoic Acids

Uwe Murawski; Heinz Egge; Paul György; Fritz Zilliken

doi:10.1515/znc-1974-1-203

Open Access Published by De Gruyter June 2, 2014

Nicht methylenunterbrochene cis,cis-Octadecadiensäuren Minor Constituents of Human Milk, VI Non Methylene Interrupted cis,cis-Octadecadienoic Acids

Inhaltstoffe der Frauenmilch, VI

Uwe Murawski , Heinz Egge , Paul György and Fritz Zilliken

From the journal Zeitschrift für Naturforschung C

https://doi.org/10.1515/znc-1974-1-203

The non methylene interrupted cis,cis-octadecadienoic acids from human milk fat were prepared by thin layer chromatography on AgNO₃ impregnated silicagel plates. The position of double bonds was determined by hydroxylation of the double bonds with OsO₄ followed by silylation. The corresponding O-trimethylsilylether derivatives of the fatty acid methyl esters were analyzed by gaschromatography mass spectrometry. 14 isomers of the following series could be identified: C_18:2 ⊿9. (12.13.14.15.16.17) ; C_18:2 ⊿ (6.7.8.9.).12; C_18:2 ⊿ (10.11.12.).15 (⊿18.15) ; C_18:2 ⊿5.9-, ⊿6.10; ⊿10.14; (⊿12.16). Possible biosynthetic pathways are discussed.

Keywords: Human Milk; Octadecadienoic Acids; Hydroxylation; Trimethylsilylation

Received: 1973-7-5

Published Online: 2014-6-2

Published in Print: 1974-2-1

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Nicht methylenunterbrochene cis,cis-Octadecadiensäuren Minor Constituents of Human Milk, VI Non Methylene Interrupted cis,cis-Octadecadienoic Acids

Inhaltstoffe der Frauenmilch, VI

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