Only TP led to effective inactivation of both analyzed enzymes (Fig. 1). A significant decrease (45% on average) in PPO activity in the HPP-preserved strawberry purée was determined at a processing temperature of 50 °C. The higher process temperature (50 °C) coupled with higher pressure (500 MPa) and the longer time of its action (15 min) were more effective in inhibiting PPO activity, with only 28%
of its initial activity remaining.