Preparation of Gazpacho Assisted by Pulsed Electric Fields: A Preliminary Study

Pulsed Electric Fields (PEFs) are a technology increasingly used in the food industry for various purposes. However, their potential benefits as a pretreatment prior to the culinary preparation of a product have rarely been investigated. No previous study has investigated the use of PEFs in obtaining gazpacho, a typical Spanish dish. We aimed to evaluate the possibility of applying this technology in pretreating the vegetables used in gazpacho; furthermore, we evaluated its impact on the final product by comparing results with control samples. Applied at several different intensities (0.5–1.5 kV/cm and 4–40 kJ/kg), PEFs softened and decreased the vegetables’ water-holding capacity. In addition, this technique beneficially affected the organoleptic characteristics of gazpacho, increasing its consistency, improving its color (which became more reddish and intense), and enhancing its flavor. Moreover, the use of PEFs allowed us to reduce the amount of water in the mix, thus saving natural resources, concentrating nutrients, and decreasing energy consumption. Although further studies are required, PEFs can be considered a technology of interest in this productive sector.