Inhibited Oxidation of Lipids III: On the Activity of Ascorbyl Palmitate during the Autoxidation of Two Types of Lipid Systems in the Presence of α-Tocopherol
✍ Scribed by Marinova, Emma M. ;Yanishlieva, Nedjalka V. L.
- Publisher
- John Wiley and Sons
- Year
- 1992
- Weight
- 419 KB
- Volume
- 94
- Category
- Article
- ISSN
- 0931-5985
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✦ Synopsis
n o v a and Nedjalka Vl. Ya n i s h l i e v a *
The kinetic bchaviours of two types of lipid systems differing in unsaturation (sunflower oil and lard) and containing 0.05 % a-tocopherol arc investigated in the presence of different concentrations of ascorbyl palmitate (AP) at different temperatures (25 and 100°C). The kinetic parameters (efficicncy, strength and activity) of A P in the presence and absence of a-tocopherol are quantitatively discussed. It is proved that ascorbyl palmitate is not only a synergist of a-tocopherol but also a radical type inhibitor of the lipid autoxidation. It is found that the rise of temperature is associated with an increase in activity of A P in the presence of a-tocopherol, this increase being more pronounced with the lipid system of lower oxidizability.