Combination of chromatographic techniques for the analysis of complex deodoriser distillates from an edible oil refining process

An analytical procedure, combining adsorption and size-exclusion chromatography, for the accurate quantification of the main groups of compounds present in complex deodoriser distillates, has been developed. Silica columns were used to quantify two fractions differing in polarity. The nonpolar fract...

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Bibliographic Details
Published in:Food chemistry 2007, Vol.103 (4), p.1502-1507
Main Authors: Ruiz-Méndez, M.V., Dobarganes, M.C.
Format: Article
Language:English
Subjects:
absorption
acylglycerols
Adsorption chromatography
Biological and medical sciences
chemical composition
Deodoriser distillates
distillates
Edible oils
esters
Fat industries
fatty acids
Food industries
Fundamental and applied biological sciences. Psychology
Gas chromatography
high performance liquid chromatography
hydrocarbons
industrial byproducts
oil refining
oils
processing residues
separation
silica
Size-exclusion chromatography
sterols
triacylglycerols
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Summary:An analytical procedure, combining adsorption and size-exclusion chromatography, for the accurate quantification of the main groups of compounds present in complex deodoriser distillates, has been developed. Silica columns were used to quantify two fractions differing in polarity. The nonpolar fraction contains hydrocarbons, alkyl esters and triglycerides. The polar fraction includes partial glycerides, fatty acids and sterols as the main groups. Further separation of both fractions by size-exclusion chromatography, allowed separation and quantification of the main groups of compounds. Additionally, a detailed quantification of the specific compounds of interest present in the fractions could be further achieved by gas chromatography after adding adequate internal standards. The need for application of the procedure to complex deodoriser distillates is justified.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2006.08.015