QUANTITATION OF OXIDIZED TRIGLYCERIDE MONOMERS AND DIMERS AS AN USEFUL MEASUREMENT FOR EARLY AND ADVANCED STAGES OF OXIDATION

Citation
G. Marquezruiz et al., QUANTITATION OF OXIDIZED TRIGLYCERIDE MONOMERS AND DIMERS AS AN USEFUL MEASUREMENT FOR EARLY AND ADVANCED STAGES OF OXIDATION, Grasas y aceites, 47(1-2), 1996, pp. 48-53
Citations number
33
Categorie Soggetti
Food Science & Tenology","Chemistry Applied
Journal title
ISSN journal
00173495
Volume
47
Issue
1-2
Year of publication
1996
Pages
48 - 53
Database
ISI
SICI code
0017-3495(1996)47:1-2<48:QOOTMA>2.0.ZU;2-P
Abstract
Quantitation of oxidized triglyceride monomers and dimers is reported as a good measurement for early and advanced stages of oxidation. Appl icability of this approach to follow-up oxidation was tested in sample s of trilinolein and methyl linoleate stored at either room temperatur e or 60 degrees C for different periods of time. Oxidized monomers, di mers and polymers were determined in 50 mg-samples by adding monostear in as internal standard and applying a combination of adsorption chrom atography, using silica cartridges, followed by high-performance size- exclusion chromatography. Additionally, peroxide values and tocopherol contents were measured. Results showed that a significant rise of dim eric compounds denoted the end of the induction period while oxidized monomers were the only group of compounds showing a progressive increa se during the early stages of oxidation.