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Investigation of heated and oxidized oils and fats by gradient elution liquid chromatography

✍ Scribed by K. Aitzetmüller

Book ID
104145044
Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
631 KB
Volume
83
Category
Article
ISSN
1873-3778

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✦ Synopsis

The major classes of artefacts in frying oils can be analyzed by liquid chromatography,

where oils with different pre-treatments show characteristic fingerprint chromatograms.

Gradient elution programmes are also useful for the analysis of technical polar glycerides and seed oils containing oxygenated fatty acids.

Using a UV and a moving-wire detector in series, it can be shown that in heated and oxidized oils, UV-absorbing substances are found primarily among the most polar fractions.

The moving-wire detector also permits the routine "tot8 artefacts" analysis of heated and oxidized oils. The steady increase of the total artefacts peak with heating time is demonstrated.

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