4. ConclusionResults from this study indicated that colour degradation was
influenced by storage temperature and time. Browning was clearly
detected and became more evident at elevated storage temperatures
and at prolonged storage. In view of predicting the colour
degradation, a zero-order model was chosen as the best fitting
model for all colour parameters. With respect to the carotenoid
profile, several carotenoids showed important changes and
appeared to have different susceptibilities to storage. Due to the
relatively limited decrease of carotenoids, isomerisation could be
more important than oxidation reactions. Amongst the carotenoids
studied, f-carotene showed an important increase in concentration
under all storage conditions. Additionally, more carotenoids displayed
important decreases as temperature and time increased,
which implies differences in individual carotenoids due to storage.