| Autor: |
Biedermann, Maurus, Grob, Konrad, Mariani, Carlo, Schmidt, Joachim |
| Zdroj: |
Zeitschrift für Lebensmittel-Untersuchung und -Forschung; 1996, Vol. 202 Issue 3, p199-204, 6p |
| Abstrakt: |
Adulteration of expensive edible oils, such as olive oil, often involves desterolized oils in order to render the adulteration undetectable. Sunflower oil contains characteristic Δ7-sterols, which are readily removed upon strong bleaching. It is shown that these Δ7-sterols do not primarily dehydrate (as do Δ5-sterols), but isomerize to Δ8(14)- and Δ14-sterols. These compounds can be analysed by LC on silica gel or GC on capillary columns with stationary phases of intermediate to high polarity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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