The present work evaluates the anthocyanin degradation in blueberry pulp after thermal treatment using
ohmic and conventional heating. The ohmic heating technology was studied using a rotatable central
composite design, and the variables studied were voltage and solids content. The anthocyanin content of
the samples was determined using HPLC. The results show that degradation increased with both
increasing voltage and increasing solids content. The comparison between ohmic and conventional
heating showed that when lower voltage levels were used, the percentage of degradation was lower or
similar to those obtained during conventional heating. However, for high electric fields, the pulp
processed using ohmic heating exhibited higher anthocyanin degradation.