In the case of HHP5
samples, hesperidin levels were low on day 1 but remained
relatively stable throughout the storage period. A similar degradation
(p70% decrease in some HHP samples
(HHP1). Similar trends were observed in a related study where an
increased level of degradation of total phenolic and antioxidant
contents between days 20 and 30 for high pressure treated fruit
smoothies (18) could be attributed to residual enzyme activity.
These “slow” and “fast” phase degradation trends are characteristic
of biphasic degradation kinetics that are common in enzymatic
degradation (36).