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Lactones in autoxidized vegetable oils
Author(s) -
Fioriti J. A.,
Krampl V.,
Sims R. J.
Publication year - 1967
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/bf02679242
Subject(s) - chemistry , chromatography , distillation , gas chromatography , cottonseed , infrared spectrophotometry , silica gel , vacuum distillation , soybean oil , column chromatography , mass spectrometry , cottonseed oil , high performance liquid chromatography , organic chemistry , food science
It was demonstrated that both gamma and delta saturated lactones are present in highly peroxidized vegetable oils. In the oils which were investigated the gamma isomers are predominant. Additional lactones also form when the hydroperoxides are reduced. Although no lactones were detectable in fresh, refined soybean oil, considerable amounts of both gamma and delta lactones were found to be present in highly peroxidized samples of cottonseed and soybean oils. The lactones in the peroxidized oils were concentrated by column chromatography on silica gel and by vacuum distillation. Gas‐liquid chromatography was used for separation and identification. This has been supplemented by thin‐layer chromatography, infrared spectrophotometry, and nuclear‐magnetic‐resonance spectrometry.