Characterization of novel Triacylglycerol Estolides from the seed oil of Mallotus philippensis and Trewia nudiflora

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DOIResolve DOI: http://doi.org/10.1007/s11745-012-3721-y
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TypeArticle
Journal titleLipids
ISSN0024-4201
1558-9307
Volume48
Issue1
Pages7585; # of pages: 11
SubjectTriacylglycerol; Estolide; Seed oil; Kamlolenic acid; Mallotus philippensis; Trewia nudiflora; Conjugated fatty acids; MALDI-TOF MS
AbstractTriacylglycerol estolides have been reported as components of the seed oil of a number of plant species and are generally associated with the presence of fatty acids containing hydroxyl groups. We have used MALDI-TOF MS to examine the intact acylglycerol species present in the seed oils of two plants that produce kamlolenic acid (18-hydroxy-D9cis,11trans,13trans-octadecatrienoic acid). Mallotus philippensis and Trewia nudiflora were both shown to produce seed oil rich in TAG-estolides. Analysis by MALDI-TOF MS/MS demonstrated that the TAG-estolides had a structure different to that previously proposed after enzymatic digestion of the oil. Acylglycerols containing up to 14 fatty acids were detected but fatty acid estolides were only present in a single position on the glycerol backbone, with predominantly non-hydroxyl fatty acids in the remaining two positions. Increased numbers of fatty acids per glycerol backbone were accounted for by the presence of fatty acid estolides containing a correspondingly greater number of fatty acids. For example, acylglycerols containing seven fatty acids had a fatty acid estolide of five fatty acids at one position on the glycerol backbone. Both capped and uncapped fatty acid estolides, with a free hydroxyl group, were present, with capped fatty acid estolides being more abundant in T. nudiflora and uncapped fatty acid estolides in M. philippensis.
Publication date
PublisherSpringer-Verlag
LanguageEnglish
AffiliationNational Research Council Canada; Aquatic and Crop Resource Development
Peer reviewedYes
NRC number54660
NPARC number21268462
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Record identifierdcbf7d7f-3a98-46e1-a83a-0f30582180b3
Record created2013-07-24
Record modified2016-05-09
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