3.4. Secondary oxidation products content of volatile compounds
The formation of secondary volatile oxidation products in mayonnaise and milk emulsions were evaluated by dynamic headspace. Although five different volatiles were measured in both of
the stored emulsions, only three of them (1-penten-3-one, 1-pen-ten-3-ol and 2,4-heptadienal) are shown for mayonnaise (Fig. 2)and milk (Fig. 3) emulsions. These volatiles were selected because
they illustrate the general trend in the development of volatile compounds in these two emulsion systems during storage. In addition, these compounds are known to represent the decomposition
of n -3 PUFA and to have impact on the development of fiflavour(Venkateshwarlu, Let, Meyer, & Jacobsen, 2004).