## Abstract The introduction of quality standards for vegetable oil methyl esters is gaining in importance due to their increased use as diesel fuel substitutes and as technical products. Free and esterified sterols, the main constituents of the unsaponifiable matter in vegetable oils, are recovere
Analysis of free and esterified sterols in vegetable oils
โ Scribed by T. Verleyen; M. Forcades; R. Verhe; K. Dewettinck; A. Huyghebaert; W. De Greyt
- Publisher
- Springer-Verlag
- Year
- 2002
- Tongue
- English
- Weight
- 127 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0003-021X
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The free and esterified sterol concentrations in 31 edible oils and fats were determined, including individual values for sitosterol, campesterol, stigmasterol, brassicasterol, D 5 -avenasterol, sitostanol, campestanol, and cholesterol. Free and esterified sterols were separated by solid-phase extra
## Abstract This short account describes a novel analytical technique for the determination of total, free and esterified sterols in olive oil developed in our laboratory. This methodology is based on ^1^H and ^31^P NMR spectroscopy. The latter spectroscopic analysis requires first the derivatizati
A reliable method for routine use in the determination of sterols in foods is described. In the sample preparation procedure, acid hydrolysis prior to alkaline saponi"cation was used to liberate glycosidic sterols. Sterols were analyzed by capillary gas chromatography as the trimethylsilyl ether der