The effect of squalene on the thermostability of rapeseed oil
✍ Scribed by Małecka, M.
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 259 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0027-769X
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✦ Synopsis
The effect was studied of squalene added in the amount from 0.10 to 1.0% on the therniostability of rapeseed oil during heating at 170°C with changes in the content of unsaturated fatty acids, polar compounds, peroxides and values of dynamic viscosity as the basis for conclusion. Under the condition applied the addition of squalene retarded the degradation of unsaturated fatty acids and limited the extend of polymerization, the most significant efficiency being achieved with the highest squalene concentration. The addition of about 0.5% of squalene was proposed as practically applicable; higher squalene concentration gave no proportional increase in its protective effect.
Zusammenfassung
Der EinfluD von Squalen auf die Thermostabilitat von Rapsol
Es wurde der EinfluD eines Zusatzes von 0,10 bis I,0% Squalen auf die Thermostabilitat von Rapsol beim Erhitzen auf 170 "C im Hinblick auf Veranderungen des Gehaltes an ungesittigten Fettsiuren, polaren Verbindungen, Peroxiden und der Werte der dynamischen Viskositit untersucht, um daraus SchluDfolgerungen abzuleiten. Unter den angewendeten Bedingungen verzogerte der Zusatz von Squalen die Zersetzung von ungesittigten Fettsauren und begrenzte die Ausdehnung der Polymerisation ; die signifikanteste Wirkung wurde mit dem hochsten Squalenzusatz erreicht. Ein Zusatz von etwa 0,5% Squalen wird als praktisch anwendbdr vorgeschkdgen; hohere Squalenkonzentrationen gaben keinen proportionalen Anstieg der Schutzwirkung.
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