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Volatile components from trilinolenin heated in air1
Author(s) -
Selke E.,
Rohwedder W. K.
Publication year - 1983
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02901537
Subject(s) - chemistry , furan , decomposition , ethanol , linolenate , organic chemistry , chromatography , fatty acid
Headspace volatiles derived from trilinolenin heated to 192 C in air were collected, separated and identified using a microroom/GC‐MS/ computer system. Data from four analyses indicated more than 80 volatiles were present. Of these volatiles, 38 have been identified, and their combined GC peak areas represent 90% of the total integrated Chromatographic area. Dominant volatiles identified included: ethanal (2%), 2‐pentene (3%), ethanol (0.5%), 2‐propenal (20%), propanal (7%), ethyl furan (13%), 2‐butenal (4%), 2‐pentenal (4%), 2,4‐heptadienal (21%), 4,5‐epoxy‐2‐heptenal (3%) and 2,4,7‐decatrienal (2%). Most of the dominant and some of the minor volatiles are the predicted decomposition products of the four linolenin monohydroperoxides. However, the ratios of the predicted volatiles do not correspond to the monohydroperoxide ratios observed from autoxidized linolenate. Other primary and minor volatiles are present that are not predicted from the classical hydroperoxide decomposition hypothesis, which suggests that trilinolenin and some of the volatile compounds undergo further oxidation.