Effect of pulse width on the retention of vitamin C in orange juice
and gazpacho (mean ± SD). Treatments were performed at 25 kV/cm,
400 ls, 200 Hz and square bipolar pulses. Horizontal and discontinuous
horizontal lines correspond to a thermal treatment (90 C, 1 min) for
orange juice and gazpacho, respectively. Bars with different letters are
significantly different (p < 0.05).