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Determination of the fully saturated triglyceride composition of fats
Author(s) -
Aneja R.,
Bhati A.,
Hamilton R. J.,
Padley F. B.,
Steven D. A.
Publication year - 1980
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/bf02672235
Subject(s) - chemistry , chromatography , triglyceride , potassium permanganate , gas chromatography , composition (language) , flame ionization detector , silicic acid , soybean oil , fraction (chemistry) , vegetable oil , organic chemistry , food science , biochemistry , cholesterol , linguistics , philosophy
A method is described for the quantitative determination of the fully saturated triglyceride composition of fats. The method involves a quantitative oxidation of the unsaturated triglycerides in the fat to a mixture of α ketol and dihydroxy compounds, using aqueous alkaline potassium permanganate and a phase transfer catalyst in a two phase reaction. The fully saturated triglycerides are fractionated from the oxidation products by column chromatography on silicic acid and their composition is quantified by gas liquid chromatography (GLC) using a flame ionization detector. Analyses of samples of lard, cocoa butter, olive oil, soybean oil, crude palm oil (ex Malaysia) and the stearin fraction from palm oil are given as examples of the method.