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Accurate determination of trans isomers in shortenings and edible oils by infrared spectrophotometry
Author(s) -
Madison B. L.,
Depalma R. A.,
D’Alonzo R. P.
Publication year - 1982
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/bf02680271
Subject(s) - infrared spectrophotometry , chromatography , infrared , chemistry , calibration , gas chromatography , analytical chemistry (journal) , spectrophotometry , infrared spectroscopy , organic chemistry , mathematics , optics , statistics , physics
A procedure is described for the accurate analysis of the trans content of fats and oils in the range of 0.5–36% trans . This procedure is shown to be more accurate than other current infrared spectrophotomeny methods. This increased accuracy is obtained by using a 2‐component calibration standard mixture and measuring the samples as methyl esters. Good agreement between this method and the measurement of trans content by a gas chromatography procedure is demonstrated.