Abstract
The aim of our research was to evaluate the effect of different types of vegetable oils, namely extra virgin olive oil (EVOO), olive oil, and sunflower oil, on the chemical properties and volatile profile of traditional Neapolitan pizza, produced by using tomato sauce and EVOO. The quality indices and polyphenols in vegetable oils were analyzed to assess the lipid oxidation as affected by cooking in traditional wood-fired ovens. Peroxide value significantly increased in all vegetable oils, particularly in sunflower oil. EVOO polyphenols decreased about 30% their initial level, particularly simple phenolics. Total individual phenolic compounds decreased from 254.6 to 172.0 mg/kg. Pizza cooking caused the development of some neo-formation volatile compounds caused by lipid oxidation and Maillard reaction. Some positive key odor compounds were found in pizza cooked with EVOO, and the addition of tomato sauce and EVOO caused a dramatic change in its volatile pattern.
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