A 35.4% inhibition of DPPH in orange juice and 39.6%
inhibition of DPPH in gazpacho were observed when products
were thermally processed (90C, 1 min), whereas
untreated samples exhibited 39.3% inhibition and 45.7%
inhibition, respectively. Orange juice, as well as gazpacho,
processed by heat, showed a lower level of antioxidant
capacity than did untreated orange juice and gazpacho
(p < 0.05). Some HIPEF treatments, such as 1000 ls,
200 Hz, 4 ls pulse width, bipolar or monopolar mode
and 15 or 35 kV/cm, led to similar levels of antioxidant
capacity in orange juice and gazpacho with respect to thermal
treatment (Table 2). When orange juice and gazpacho
were processed at 30 kV/cm for 400 ls at 50 Hz with bipo-