High hydrostatic pressure processing (HHP) is an alternative
non-thermal technique applied to food and beverages with minimal
detrimental effects on nutritional parameters compared to
conventional thermal processing. HPP may be advantageous since
smoothies preserve most of their natural bioactive compounds and
antioxidant activity compared to heat processing. Both pressure
processing conditions chosen (450 MPa/3 min/20 C and
600 MPa/3 min/20 C) show that treatment at 450 MPa is sufficient
and satisfactory, as it produces minimum sensorial changes compared
to the fresh smoothie in terms of colour, easier extractability
of lycopene, b-carotene and polyphenols, high retention of ascorbic
acid, and high antioxidant activity in these beverages.