Biomedical Engineering Reference
In-Depth Information
100
Tocopherols
Tocotrienols
80
60
40
20
0
Beta
Delta
Alpha
Gamma
FIGURE 6.8
Biological activity of tocopherols and tocotrienols. (Adapted from Kamal-
Eldin and Appelqvist.
45
)
280
Tocopherols
Tocotrienols
240
200
160
120
80
40
0
Beta
Delta
Alpha
Gamma
FIGURE 6.9
Antioxidant activity of tocopherols and tocotrienols. (Adapted from Kamal-
Eldin and Appelqvist.
45
)
in low surface-to-volume ratio (bulk oils) while nonpolar components are desirable
when high surface-to-volume ratio exists, such as in an emulsion.
70
Frankel et al.
71
found that
-tocopherol and ascorbyl palmitate were more efficient antioxidants in
an oil-in-water emulsion compared to bulk oil, while Trolox and ascorbic acid
showed the opposite trend.
α
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