The origin and structures of dimeric fatty acids from the anaerobic reaction between soya-bean lipoxygenase, linoleic acid and its hydroperoxide

Author:

Garssen G. J.1,Vliegenthart J. F. G.1,Boldingh J.1

Affiliation:

1. Laboratory of Organic Chemistry, State University of Utrecht, Croesestraat 79, Utrecht, The Netherlands

Abstract

In an anaerobic system soya-bean lipoxygenase catalyses in the presence of linoleic acid and l-13-hydroperoxyoctadeca-cis-9-trans-11-dienoic acid the formation of dimeric fatty acids and of carbonyl compounds. The analogous reaction does not take place when d-9-hydroperoxyoctadeca-trans-10-cis-12-dienoic acid is used instead of the 13-hydroperoxy isomer. Non-oxygenated dimers stem directly from linoleic acid and have C(11)–C(13′) or –C(9′) and C(13)–C(13′) or –C(9′) linkages. Dimers that contain oxygen originate from linoleic acid and linoleic acid hydroperoxide. It is most likely that the oxygen is present in epoxy groups.

Publisher

Portland Press Ltd.

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