3.2.3.1. Changes in unsaturated fatty acids during heating treatment.
When evaluating changes in fatty acids profile during heating of
the frying oils, there was a difference in the unsaturated fatty
acid composition depending on the oil nature. This composition
decreased when time of frying increased. A significant difference
was observed between oils after 24 h of heating (p < 0.05). Oil
treated with RE conserves the higher amount of unsaturated fatty
acids even after 30 h of heating which suggests that this oil resist
to oxidation.