Thermal processing reduced some of the flavor variation among
cultivars, shown by the closer grouping of purées on the PCA biplot
compared to fresh samples (Fig. 1). Nam Dok Mai and Chok Anun
had the most dramatic changes in flavor due to processing. Processing
significantly decreased the intensities of mango identity
and peach in fresh Nam Dok Mai (Table 2), suggesting that heat
treatment reduced fruit-related characteristics. Chok Anun, on the
other hand, was higher in mango identity, pineapple, and sweet
flavors after processing, indicating that heat treatment heightened
fruit-related characteristics. The volatile compounds of these two
cultivars may have been affected by the heat treatment in different
ways. Malundo et al. (1996) indicated that heating may decrease
the concentration of some volatile compounds while having a
lesser impact on others, which changes the balance of aromas. In
addition, heating may have caused a change in structure to certain
compounds, which could affect flavor.