Fast flow-through non-thermal pasteurization using constant radiofrequency electric fields

TitleFast flow-through non-thermal pasteurization using constant radiofrequency electric fields
Publication TypeConference Paper
Year of Publication2013
AuthorsGonzález-Sosa, J, Ruiz-Vargas, A, Arias, G, Castellví, Q, Ivorra, A
Conference NameTenth International Bioelectrics Symposium (BIOELECTRICS 2013)
Conference LocationKarlsruhe, Germany
Abstract

Pulsed Electric Field technologies have captured the attention of researchers on food pasteurization because of their non-thermal inactivation mechanism, which results in fresh-like products. Nevertheless, high voltage pulsing required by these technologies implies complex and costly generators. Here, as an alternative, it is proposed a method, partially inherited from research on cell electroporation for gene transfection, in which the liquid to be treated flows at high speed through a miniature chamber where the electric field is permanently applied. In particular, it is proposed that the constantly applied electric field consists of an AC signal (> 100 kHz) so that electrochemical by-products are minimized. The method, while being compatible with batch processing, will allow use of lower voltages and will avoid the pulsation requirement.