The percentage of anthocyanin degradation was similar or even
lower than those obtained with conventional heating when the
ohmic heating process was used with low voltage gradients. When
higher voltage gradients were applied, the levels of degradation
were greater for the ohmic-heated pulp. These results might be
explained by electrochemical reactions that are catalyzed by high
voltages. The results emphasize the importance of the use of inert
materials in electrodes and electrode coatings or the use of high
frequency power to limit electrochemical reactions.